Navigator Pro is an autonomous GPS system that achieves sub-meter accuracy without corrections and sub-decimeter accuracy with external corrections. It uses a moving baseline technique to calculate positioning vectors between receivers in motion. This allows it to provide precise navigation, positioning, and monitoring for applications like unmanned vehicles, hazard avoidance, and asset tracking. The system records and transmits real-time data from its receivers and attached sensors via a low-power mesh network.
This article (in French) explains how Geoflex has developed original PPP-RTK solutions (Precise Point Positioning with Real Time Kinematic capabilities) to reduce the convergence time of PPP (from 30 minutes to a few minutes) by adding a priori atmospheric data in the PPP calculation.
Location in ubiquitous computing, LOCATION SYSTEMSSalah Amean
This presentation is a simple effort to survey positioning systems which is part o
Introduction
Location system
Global Positioning System
Active Badge
Active Bat
Cricket
UbiSense
RADAR
Place Lab
PowerLine Positioning
ActiveFloor
Airbus and Tracking with Cameras
Credit:
1-the presentation follows the book of "Ubiquitous computing fundamentals by John Krumm " 2010 .
2- few videos are downloaded and integrated with the presentation. Most of the videos are important to explain about each topics they are placed in
This article (in French) explains how Geoflex has developed original PPP-RTK solutions (Precise Point Positioning with Real Time Kinematic capabilities) to reduce the convergence time of PPP (from 30 minutes to a few minutes) by adding a priori atmospheric data in the PPP calculation.
Location in ubiquitous computing, LOCATION SYSTEMSSalah Amean
This presentation is a simple effort to survey positioning systems which is part o
Introduction
Location system
Global Positioning System
Active Badge
Active Bat
Cricket
UbiSense
RADAR
Place Lab
PowerLine Positioning
ActiveFloor
Airbus and Tracking with Cameras
Credit:
1-the presentation follows the book of "Ubiquitous computing fundamentals by John Krumm " 2010 .
2- few videos are downloaded and integrated with the presentation. Most of the videos are important to explain about each topics they are placed in
NavikEye is the Multiconstellation GNSS simulator from MaxEye Technologies.
NavikEye Multi-constellation GNSS Simulator offers realtime generation of various global satellite navigation signals including dynamic scenarios and HIL simulation. The scenario generation can be fully automated using the remote TCP commands via Ethernet. This enables the implementation of dynamic HIL environment. The HIL test system can feed the realtime location coordinates, velocity and other vehicle dynamics to the GNSS Simulator. Based on this GNSS simulator updates the receiver position in realtime.
The simulator supports moving receiver scenarios with predefined waypoints using NMEA and KML files. NavikEye GNSS Simulator is based on National Instruments scalable and software defined PXI architecture powered by LabVIEW.
By Martin de Kievit (Sales Manager Marine at Trimble, The Netherlands)
The demand for greater positioning accuracy with more reliability for waterways and marine positioning is aided with more satellite availability. While GPS from USA, and GLONASS from Russia, have been the mainstay of GNSS for the last few years we have seen three new constellations – QZSS from Japan, BeiDou (Compass) from China and GALILEO from Europe.
This presentation reviews the current status of all the GNSS constellations. Other new developments which will be touched briefly;
-Updated Geoid Model EGM-96,
-Due to doubling of the number of satellites, the corrections needed for precise GNSS, have also doubled so a new correction format is explained.
Furthermore we will tell you something about the latest RTX service (corrections over satellite) and xFILL technology (maintaining your positioning after you lose your GNSS signal).
Time distribution strategies in cellular networksNir Cohen
This paper reviews the various methodologies currently available for ensuring Time of Day (ToD) synchronization in cellular networks. It also introduces RAD’s revolutionary Distributed GMTM scheme, designed to deliver superb ToD accuracy at a lower cost in LTE and small cell networks, by bringing Grandmaster functionality closer to the base station in a small form factor device.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
By Yann Casamajou technical. product line manager Ixblue
With DP-PHINS, iXBlue has expanded the functionality of its industry-leading PHINS inertial navigation system (INS).
The new DP-PHINS is designed to interface with any third-party acoustic positioning equipment to provide INS-enhanced acoustic data input to marine dynamic positioning (DP) systems. Additionally DP-PHINS can also take data from a range of other sensors, some not normally associated with DP, such as Doppler velocity logs (DVL), for use in maintaining vessel position.
Using DP-PHINS with INS produces positioning data that is smoother, more accurate and is updated at a higher rate. Consequently, station-keeping performance is significantly improved, vessels use less fuel, and wear and tear on the DP system components is reduced.
The system has been fully qualified at sea with industry leaders operating in West Africa O&G development field.
The aim of “BLUESLEMON” project is to develop a low-cost automatic system for monitoring landslide surface displacement using drones and BT beacons. The proposed drone architecture is developed to go beyond the current state-of-the-art techniques and is characterized by autonomous navigation capabilities. The UAV platform is equipped with obstacle-detection sensors and collision-avoidance algorithms, allowing the smart UAS to be easily employed for autonomous navigation, even in case of diverse environments or applications (search-and-rescue operations in alpine environments or automatic surveillance in urban areas).
NavikEye is the Multiconstellation GNSS simulator from MaxEye Technologies.
NavikEye Multi-constellation GNSS Simulator offers realtime generation of various global satellite navigation signals including dynamic scenarios and HIL simulation. The scenario generation can be fully automated using the remote TCP commands via Ethernet. This enables the implementation of dynamic HIL environment. The HIL test system can feed the realtime location coordinates, velocity and other vehicle dynamics to the GNSS Simulator. Based on this GNSS simulator updates the receiver position in realtime.
The simulator supports moving receiver scenarios with predefined waypoints using NMEA and KML files. NavikEye GNSS Simulator is based on National Instruments scalable and software defined PXI architecture powered by LabVIEW.
By Martin de Kievit (Sales Manager Marine at Trimble, The Netherlands)
The demand for greater positioning accuracy with more reliability for waterways and marine positioning is aided with more satellite availability. While GPS from USA, and GLONASS from Russia, have been the mainstay of GNSS for the last few years we have seen three new constellations – QZSS from Japan, BeiDou (Compass) from China and GALILEO from Europe.
This presentation reviews the current status of all the GNSS constellations. Other new developments which will be touched briefly;
-Updated Geoid Model EGM-96,
-Due to doubling of the number of satellites, the corrections needed for precise GNSS, have also doubled so a new correction format is explained.
Furthermore we will tell you something about the latest RTX service (corrections over satellite) and xFILL technology (maintaining your positioning after you lose your GNSS signal).
Time distribution strategies in cellular networksNir Cohen
This paper reviews the various methodologies currently available for ensuring Time of Day (ToD) synchronization in cellular networks. It also introduces RAD’s revolutionary Distributed GMTM scheme, designed to deliver superb ToD accuracy at a lower cost in LTE and small cell networks, by bringing Grandmaster functionality closer to the base station in a small form factor device.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
By Yann Casamajou technical. product line manager Ixblue
With DP-PHINS, iXBlue has expanded the functionality of its industry-leading PHINS inertial navigation system (INS).
The new DP-PHINS is designed to interface with any third-party acoustic positioning equipment to provide INS-enhanced acoustic data input to marine dynamic positioning (DP) systems. Additionally DP-PHINS can also take data from a range of other sensors, some not normally associated with DP, such as Doppler velocity logs (DVL), for use in maintaining vessel position.
Using DP-PHINS with INS produces positioning data that is smoother, more accurate and is updated at a higher rate. Consequently, station-keeping performance is significantly improved, vessels use less fuel, and wear and tear on the DP system components is reduced.
The system has been fully qualified at sea with industry leaders operating in West Africa O&G development field.
The aim of “BLUESLEMON” project is to develop a low-cost automatic system for monitoring landslide surface displacement using drones and BT beacons. The proposed drone architecture is developed to go beyond the current state-of-the-art techniques and is characterized by autonomous navigation capabilities. The UAV platform is equipped with obstacle-detection sensors and collision-avoidance algorithms, allowing the smart UAS to be easily employed for autonomous navigation, even in case of diverse environments or applications (search-and-rescue operations in alpine environments or automatic surveillance in urban areas).
Meetup Voiture Connectée et Autonome #18 avec Vinci, Renault, TomTom, GeoflexLaurent Dunys
Le 20 mars 2019, chez Léonard (https://leonard.vinci.com) à Paris.
Après une période d'euphorie médiatique et à la suite de plusieurs accidents, le sujet des véhicules autonomes est maintenant tombé dans la zone de désillusion*. En fautes, certains challenges techniques difficiles à surmonter. Par exemple, la précision centimétrique et la fiabilité à chaque instant de la géolocalisation des véhicules est essentielle pour permettre le fonctionnement de ces véhicules en parfaite sécurité. En ce sens, le rythme et le montant des investissements en R&D ne cessent de grimper et de réelles avancées commencent à émerger, en laboratoire comme en entreprise.
Leonard /https://leonard.vinci.com/ est le laboratoire du futur des villes et des infrastructures, créé par VINCI. Son équipe nous invite à organiser notre 18ème Meetup dans leur sublimes locaux dans le 12ème arrondissement à Paris. L'occasion de venir approfondir le sujet des technologies liées à la géolocalisation des véhicules autonomes à travers deux experts du sujet:
⚬ Marie-Anne Mittet, Localization Expert for ADAS and Autonomous Driving chez Renault-Nissan-Mitsubishi /www.renault.com/
⚬ Romain Legros de Géoflex /www.geoflex.fr/
⚬ Rémi Villain, Product Manager chez TomTom /https://www.tomtom.com/
En conclusion, un apéro networking sera généreusement offert par l'équipe de Leonard, groupe Vinci.
L'entrée, strictement réservée aux professionnels, est gratuite sur inscription avec prénom, nom, email, fonction/entreprise.
Les Meetups Voiture Connectée et Autonome vous sont proposés par Laurent Dunys, https://www.linkedin.com/in/laurentdunys, depuis 2016.
----------------------------------------------------------------------------
Hashtag #MeetupConnect
Comptes Twitter: @MeetupConnect @WeAreLeonard @Mobileye @Groupe_Renault @LDunys
*https://www.gartner.com/smarterwithgartner/top-trends-in-the-gartner-hype-cycle-for-emerging-technologies-2017/
Waypoint Flight Parameter Comparison of an Autonomous Uavijaia
The present paper compares the effect of different waypoint parameters on the flight performance of a
special autonomous indoor UAV (unmanned aerial vehicle) fusing ultrasonic, inertial, pressure and optical
sensors for 3D positioning and controlling. The investigated parameters are the acceptance threshold for
reaching a waypoint as well as the maximal waypoint step size or block size. The effect of these parameters
on the flight time and accuracy of the flight path is investigated. Therefore the paper addresses how the
acceptance threshold and step size influence the speed and accuracy of the autonomous flight and thus
influence the performance of the presented autonomous quadrocopter under real indoor navigation
circumstances. Furthermore the paper demonstrates a drawback of the standard potential field method for
navigation of such autonomous quadrocopters and points to an improvement
A remote-controlled global navigation satellite system based rover for accur...IJECEIAES
One of the main tasks of a cadastral surveyor is to accurately determine property boundaries by measuring control points and calculating their coordinates. This paper proposes the development of a remotely-controlled tracking system to perform cadastral measurements. A Bluetooth-controlled rover was developed, including a Raspberry Pi Zero W module that acquires position data from a VBOX 3iSR global navigation satellite system (GNSS) receiver, equipped with a specific modem to download real-time kinematic (RTK) corrections from the internet. Besides, the Raspberry board measures the rover speed with a hall sensor mounted on a track, adjusting the acquisition rate to collect data at a fixed distance. Position and inertial data are shared with a cloud platform, enabling their remote monitoring and storing. Besides, the power supply section was designed to power the different components included in the acquisition section, ensuring 2 hours of energy autonomy. Finally, a mobile application was developed to drive the rover and real-time monitor the travelled path. The tests indicated a good agreement between rover measurements and those obtained by a Trimble R10 GNSS receiver (+0.25% mean error) and proved the superiority of the presented system over a traditional metric wheel.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
3. Gps Performance
Navigator Pro utilizes moving base technology enables the achievement of sub
meter accuracies.
The moving baseline (MB) mode differs from standard RTK operation in that the
base is no longer stationary at a pre-determined location. Both the base and rover
receivers are allowed to move while computing an accurate vector between the
receiver's antennae.
This mode enables the calculation of heading on dynamic or static platforms, plus
provides a centimetre level accurate 3D vector for use in dynamic positioning for
example, e.g. UAV ”Storing Event Markers on Rinex Files” feature.
Precise navigation and automation is becoming a topic that is discussed more
often than not
Using the moving baseline functionality with fixed base and rover antenna
positions on a platform gives the means to estimate the baseline angle with
respect to the local datum via the relative position information. This derived
angular error will then be proportional to the baseline length. Figure 3 (UBlox)
below provides the trend for baseline lengths up to 1 m for a typical (1 sigma)
relative position error of 0.8 cm. This is applicable to the use of a closed loop GPS
instead of an open loop GPS
3
5. Navigator Pro Performance
Navigator Pro is a uniquely designed GPS that without any external correction
sources achieves sub meter accuracies.
With the addition of a fixed base and a communications network Navigator Pro
achieves sub decimetre accuracies.
Normally the following would be applicable when powering up a GPS
TTFF (Time to first fix) from a cold start is achieved in 26 seconds when observing
GPS and GLONASS.
Hot and aided starts fixes in approximately 2 to 3 seconds.
The unique design of Navigator Pro keeps the receivers alive resulting in a RTK fix
from a loss of lock in under a second from re-establishing a lock. A RTK fix from a
“cold start” in under a minute.
5
6. Navigator Pro Performance
The example below indicates a single solution position with a baseline of 4.664 M
(the base line was 4.5 M) within a few seconds from startup
6
7. Navigator Pro Performance
Navigator Pro achieves a Float solution a few sends later
with the base line 5.017 M as the GPS calculates the 3D
vector.
Once the vector has been calculated a Fix solution is
achieved and now has a base line of 4.511 M
7
8. Navigator Pro Performance
Navigator Pro has the ability to resolve short base lines,
calculate Yaw (Dead Reckoning) and Pitch. With the
addition of another receiver Roll can also be calculated and
displayed. The display would be displayed in a graphical
format and can be used to guide machines in order to grade
access ramps accurately without having to exit the cab to
check grade boxes. Saving Surveyors time to construct the
grade boxes.
With the ability to give direction, accurate position and
height, Navigator Pro can direct a drill operator along a
previously calculated “flight Plan”, uploaded from the Rock
Engineer/Mine Planners office directly to the required drill
rig. The drill operator will be guided to the drilling position
in a similar fashion as a stake out function on a survey GPS.
8
13. Navigator Pro Performance
As can be seen from the previous 2 slides the GPS node
accurately calculates Pitch and Yaw and displays such
very accurately and is stable. Acquisition time from
start-up to resolving the short base line and pitch angle
is normally under a minute and once established
remains accurate even when moving, if lock is lost due
for instance passing under a structure such as a bridge
lock is re-established within about 7 seconds from
clearing the obstacle.
13
19. Navigator Pro
Safety
Navigator Pro provides accurate positioning in real time and all data is recorded
for future analysis such as incident reconstruction in conjunction with laser scans
etc.
An envelope is created around each node depending on the installation of such
node.
If the node is used for High wall monitoring no envelope is created.
If the node is installed in a vehicle or worn on a person, an envelope using
predetermined values to create a safety envelope around the machine/person
equipped with the node.
The node carried on a person or mounted to a vehicle allows for the “visibility” of
personnel or vehicles in the vicinity of moving earthmoving machines by
displaying their position and presence on the screen in the cab warning the
operator and the person/s or drivers about the danger/s present.
By adding low cost accelerometers (IMU’s ,3 axis Gyro) to predominately moving
nodes, additional real time data is provided in terms of acceleration ,
deceleration, vehicle tilt etc. A person carrying a node equipped with an
accelerometer will raise an alarm if the person falls off a machine.
19
20. Navigator Pro
Safety
Predetermined values for minimum and maximum values for vehicle roll and pitch
can be programed into the node that will raise alarm when such hazards are
encountered
All impact alarms will be a “Red” alarm and all other alarms will be in 3 levels of
severity. “Yellow” entering a hazardous area , “Orange” in a hazardous area “Red”
should an impact alarm be detected. Impact alarms include collisions, sudden
acceleration or deceleration of moving nodes. Predominantly moving nodes can
also be Geofenced excluding access certain areas for unauthorised people, vehicle
etc.
Precision
Navigator Pro is an Autonomous GPS with sub meter accuracy without external
RTCM correction messages and sub decimetre accuracy with external RTCM
messages.
20
21. Navigator Pro
Navigation
Navigator Pro provides precise navigation by means of a tablet that display maps of old
underground works and dangerous terrain with precise position indicated on the screen
allowing the operator to remain in predetermined safe areas
Positioning
Navigator Pro with external RTCM correction messages achieves decimetre accuracy in X, Y
and Z allowing for the precise positioning of mining machinery such as Drills. Hole depth
can also be verified using Navigator Pro.
Asset monitoring
Assets equipped with Navigator Pro can be Geo-fenced. If the asset then crosses the
predetermined Geo fence alarm is raised.
Research
Real time data, precision positioning and a variety of attachable sensor renders Navigator
Pro the ideal research tools for the industry.
21
22. Navigator Pro Applications
Monitoring. Navigator pro is a low cost accurate L1 GPS,
due to the low cost and factors such as low power
consumption and networkability makes it ideal for
monitoring of structures such as High walls and other
critical structures in conjunction with Radar and laser
scanners.
Precise and real time monitoring of all moving equipment
inclusive of position, speed, payload and any other
functions deemed required for monitoring.
Navigator Pro allows for the connection and real time
monitoring of numerous sensors such as air quality,
seismic, vibration and other sensors allowing real time
monitoring of for instance air quality inside and outside of
the machine cab.
22
23. Navigator Pro Applications
Real time data, Navigator Pro provides real time data
to whoever requires such, the production office will
know the position, speed and payload of all
production vehicles, bottle necks therefor can be
cleared by redirecting trucks.
Grade slopes, Navigator Pro has the ability to display
various graphical aids such as angles etc. to the
operator.
Data such as drill hole locations and grade slope data
can be uploaded to specific machines over the air
without the need to access the machine
23
24. There are a plethora of applications of such a system . With the initial system built
from old RF receivers accuracies of 10 and 20 centimetres were achieved testing in
underground parking areas.
With the University of Johannesburg and Wits also getting involved in precise
underground research and having shared this with them I am sure that such a
system that is centimetre accurate will be available in the very near future making
mining that much safer and easier to mine.
The amount of real time data collected would therefor be invaluable for research
and with modern day electronics again any number of low cost sensors or where
required more precise sensors can be connected to the system and monitored.
I do not think such a system has ever been available to the mining of for that matter
any industry where precision in positioning is required.
Navigator Pro Applications
24
25. With several nodes deployed on the surface of an underground mine to known positions
such as Main and Vent shafts and allowing the network of GPS node to synchronise as
close to zero Nano seconds as possible and taking the node position underground by means
of single mode fibre optic cable and connecting it to a RF network of nodes in an open loop
configuration will once the network is complete and the nodes have line of sight in a
zigzag patter along a tunnel propagate corrections to each other using the above ground
positions as reference and the RF nodes mounted to previously surveyed underground
points to correct themselves in relation to and synchronise with the above ground network
Any corrections to the known point with increased accuracy with be propagated via the
network to all other nodes allowing them to apply such corrections to themselves
eventually after applying all corrections and with a synchronised system any roving node
“seeing” 3 or more static nodes will after initialization be centimetre accurate.
From a safety and automation aspect this system can save lives by being able to send a
machine into a hazardous area instead of a person. This will in turn lead to the
development of autonomous and remote control (possibly from the surface) mining
machinery
Navigator Pro Applications
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26. Navigator Pro Operation
Navigator Pro is a unique designed low cost sub meter autonomous
GPS. It provides a continuous real time GPS and RTCM data
streams as well as Sensor data.
The data is transmitted by means of a low cost mesh network,
RTCM corrections are propagated by a stationery base as well as
between units allowing for sub decimetre accuracy.
Navigator Pro in a monitoring installation such as High Wall and
structural monitoring besides transmitting real time data samples
data is post processes at given time intervals to verify positions.
With the small packets of data and Mesh infrastructure the system
has a complete redundancy and fails safe back backbone whereas
the radios also synchronise and by means of RSSI (Received Signal
Strength Indicator) and TOF (Time Of Flight) calculates a vector
between itself and any other radios that it is connected to.
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27. Navigator Pro Operation
The vector is compared with the GPS receiver’s position and in time the
radio position will be the same as the GPS receiver’s position with the only
differences being the distances between the radio antenna and the Rover
antenna centre.
The system constantly does “health” checks on all nodes within the
network any node failures are reported via the network to the responsible
person for action to be taken. Replacement of a unit is as simple as
disconnecting the faulty node and connecting a new node and powering
it up. The node is intelligent enough to connect itself to the mesh, select
the strongest and most relevant nodes to itself initiate communications
with them, receive any updates since it was last powered up, do the maths
and precisely position itself.
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28. Navigator Pro Operation
Navigator Pro is besides modular and easy to deploy. The
units will upon power up establish it’s position and also
survey the mesh network and automatically select the
strongest signals.
Once radio communication is established the new node will
start receiving RTCM corrections and also broadcast its own
generated RTCM messages allowing the GPS Node correct
itself in relation to the base and the balance of the GPS
Nodes
Once the network has fully propagated the mean of
deviations are calculated for X,Y and Z. The correction values
for X, Y and Z are transmitted over the air to all GPS Nodes
that will apply the corrections to X,Y and Z for local Datum's
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29. Navigator Pro
The following slides from a random observation with
Navigator Pro node in full QD mode. All slides with
thanks to Tomoji Takasu
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