CITY GOALS - Expedite The Flow of Geodata to the Public by:
• Establishing horizontal and vertical positions on newly esta...
HORIZONTAL AND VERTICAL CONTROL NETWORKS
Past GPS Surveys – Santa Maria Valley GPS Network
 4 Survey Crews
4 GPS Receive...
Record of Survey
SURVEY TEAM GOALS
Defendable, Accessible, Reliable - DAR
• Utilize existing standards and best practices in the Science of...
Horizontal Datum
 Horizontal accuracies to comply with California Public Resources Code 8856 having a
positional accuracy...
Primary Control
 Primary benchmarks observed for 30
minutes using Trimble R8 model 3 GNSS
receiver and post-processed usi...
Secondary Control
 NGS Field Guidelines for RTK/RTN GPS
measurements followed.
http://www.ngs.noaa.gov/PUBS_LIB/NG
SRealT...
Survey Field Notes
Least Squares Adjustment Report and Final Coordinate
Solution for Primary Control Benchmarks
GIS Survey Control Layer
GIS Layer
GIS Layer
Record of Survey
 Constant Communication with Client
 Adapt to Clients Needs
 Team Work
 Mission Planning and Point Management
 Guidel...
Victor M. Rasgado
Geomatics Lecturer/GIS Coordinator
HawCC
Email: victor@hawaii.edu
Phone: (808) 854-4820
Copyright ©2010 ...
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City of Pismo beach Horizontal and Vertical Control Network

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Constant Communication with Client

Adapt to Clients Needs

Team Work

Mission Planning and Point Management

Guidelines for New Technologies and Implementations

Good Food and Company

Published in: Engineering, Technology
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City of Pismo beach Horizontal and Vertical Control Network

  1. 1. CITY GOALS - Expedite The Flow of Geodata to the Public by: • Establishing horizontal and vertical positions on newly established benchmarks throughout the City of Pismo Beach. • Provide benchmark information to the Public via hard copy and as a GIS layer. • Incorporate new Geodata from the private sector into the City of Pismo Beach's GIS. • Use current staff to minimize cost. HORIZONTAL AND VERTICAL CONTROL NETWORK
  2. 2. HORIZONTAL AND VERTICAL CONTROL NETWORKS Past GPS Surveys – Santa Maria Valley GPS Network  4 Survey Crews 4 GPS Receivers Communications between Crews and Setup - CRITICAL 1 ½ hour GPS Static Sessions Mission Planning for GPS observations Nightime Operations Static Session on Known HPGN Control Monuments ½ Million Dollar Investment - 1996
  3. 3. Record of Survey
  4. 4. SURVEY TEAM GOALS Defendable, Accessible, Reliable - DAR • Utilize existing standards and best practices in the Science of Geomatics, Traditional Land Surveying, and GIS Mapping to produce High Quality mapping deliverables. • Utilize technological advances in GPS and available online information for locating and measuring points on the surface of the earth – CGPS/CORS data & RTN networks. • Provide Primary Control tied to the latest Horizontal and Vertical Datums using California standards for GPS measurements. (45 points total) • Provide Secondary Control tied to newly established Primary Control using NGS standards governing RTK/RTN procedures. (145 points total) • Provide Efficient and Cost Effective services and data to the City of Pismo Beach. www.AGLSurveys.com
  5. 5. Horizontal Datum  Horizontal accuracies to comply with California Public Resources Code 8856 having a positional accuracy of two centimeters or better. Benchmarks and GIS mapping referenced to the California Coordinate System 1983, CCS83, (epoch 2011), Zone 5. Vertical Datum  Vertical accuracies to comply with California Public Resources Code 8858 having a positional accuracy of five centimeters or better. Benchmarks and GIS mapping referenced to the North American Vertical Datum of 1988 (NAVD88) through ties to established local benchmarks within the City of Pismo Beach. GIS Data GIS Layer containing the newly established benchmark locations incorporated into a geodatabase along with attributes with spatial links to field notes and digital imagery for each point.
  6. 6. Primary Control  Primary benchmarks observed for 30 minutes using Trimble R8 model 3 GNSS receiver and post-processed using Trimble Business Center software version 2.5 along with CORS stations USLO, P516, and P513 .  Least Squares adjustment processed using Trimble Business Center software version 2.5; Residuals printed and included in the surveyor's report.  45 Primary Control Points Located.
  7. 7. Secondary Control  NGS Field Guidelines for RTK/RTN GPS measurements followed. http://www.ngs.noaa.gov/PUBS_LIB/NG SRealTimeUserGuidelines.v2.0.4.pdf  Secondary benchmarks observed for (two) 3 minutes occupations using Trimble R8 model 3 GNSS receiver and post-processed using Least Squares using Trimble Business Center software version 2.5; Residuals printed and included in the surveyor's report.  145 Secondary Points Located.
  8. 8. Survey Field Notes
  9. 9. Least Squares Adjustment Report and Final Coordinate Solution for Primary Control Benchmarks
  10. 10. GIS Survey Control Layer
  11. 11. GIS Layer
  12. 12. GIS Layer
  13. 13. Record of Survey
  14. 14.  Constant Communication with Client  Adapt to Clients Needs  Team Work  Mission Planning and Point Management  Guidelines for New Technologies and Implementations  Good Food and Company
  15. 15. Victor M. Rasgado Geomatics Lecturer/GIS Coordinator HawCC Email: victor@hawaii.edu Phone: (808) 854-4820 Copyright ©2010 - 2014 Victor M. Rasgado

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