1. KTMS-3630
Ascending GPS Telesonde
General Description
The KTMS series sensors from Komoline
Aerospace Limited are sensors equipped with
captive power and telemetry in the form of a radio
transmitter.
The 3000 series are the sondes, radiosondes and
drop-sondes, as they have been traditionally
called. The KTMS-3630 is a GPS radiosonde and
measures temperature, humidity and pressure in
addition to GPS related static and dynamic
parameters.
The telesondes are calibrated for all parametric
measurements made by them on a per-unit basis
in a special integrated telesonde parametric
calibration facility. The calibration coefficients are
stored internally and applied to all measurements
made by the telesonde of the respective
parameters.
All measurements including GPS data are
transmitted to ground every second. Faster and
slower reporting is possible.
The sonde is equipped with transmitters that can
be frequency-customized and is available with
receivers capable of tracking single or multiple
telesondes, deployed typically on balloons.
Reception of data is possible using very simple
and easy to operate receivers that can be
attached to a PC or laptop, or even operated in
autonomous recording mode for off-line
processing.
Data visualization software is available for both
real-time and offline use. The visualization
includes text as well as pictorial (i.e. time-series
or altitude series graph or plot). The receiver
software also generates spread-sheet or data
base file compatible with standard programs.
Customization is offered by the company for
volume buyers.
● Smart Sensing Architecture
● Temperature, Humidity and Pressure
● GPS Parameters
● Simple Receiver, Long Range
● Extremely Light – 120g
● Long Shelf Life
● Prelaunch Calibration Facility If Desired
KTMS-3630-DS-Rev 4.3 - June 03, 2013
© 2014 Komoline Aerospace Limited, Ahmedabad. All Rights Reserved. The company follows a policy of incessant product
development and consequently specifications and features of the product may change from time to time, and the Company reserves
the right to supply a better performing product than specified in literature that is outdated.
Contact Information: Registered Office located at 110, Om Tower, Satellite, Ahmedabad, Gujarat-380015 India.
Tel: 91 79 2 675 3712, Fax: 91 79 2 674 6324; E-mail info@komoline.com. Visit our web site at www.komoline.com
GPS Receiver
Subsystem
Temperature
Sensing
Element
Humidity
Sensing
Element
Pressure
Sensing
Element
Long Shelf Life
Lithium Power Source
Arming Circuit
Power Regulators
Reed Solomon FEC Coded
Data Transmission [(M)FSK/
Custom]
Central
Processing
Unit
Code
Flash
Data
Flash
Biasing
and
Signal
Condition-
ing
Circuits
with
Quantizers
A

2. Specifications of KTMS-3630 Ascending GPS Telesonde
Komoline Aerospace Limited
Specifications
Type of Sensing Element Resistive Bead for Temperature, Capacitive Solid-State Sensor for
Humidity, Ceramic Sensor for Pressure
Output Units
(Convertible in Receiver)
°C for Temperature, % RH, hPa for Pressure, m for altitude, m/s for
speed, ° off-N for Heading, Standard Lat-Long in °,’,”.
Typical Accuracy 0.1°C of equilibrium value for temperature, 2% for RH, 0.2 hPa for
Pressure
Resolution 0.01°C for Temperature, 0.1% for Humidity,0.1 hPa for Pressure
Range of measurement,
Temperature
-120°C to +50°C
Range of measurement,
Humidity
0 to 100% RH
Range of measurement,
Pressure
3hPa to 1100 hPa
Averaging Provision Factory Settable on Per-Parameter Basis
Electrical
Power Source Low Mass Lithium Battery Pack
Supply Current 50-100 mA (Average), 200 to 1000 mA Peak
(Depending on Transmission Options)
GPS Locking Time Cold Start, < 45s Typ
Power-On Settling Time
To Rated Accuracy
10s
Deployment
Ascent Mechanism Balloon-borne
Max Shelf Life (Calibration) 2 Years (Re-calibratable at field / prelaunch)
Max Shelf Life (Battery) 5 to 10 Years
Outputs
Type 401MHz to 406 MHz Met Band Standard
(M)FSK Radio (Settable Centre Frequency)
(Please contact Factory for Other Options)
Coding Reed Solomon FEC Coded Packets
Frequency Customizable from 400MHz to 950MHz
Sampling Frequency 1 Hz (Contact Factory for Other Possibilities)
Range 45km Vertical and 200km horizontal with KEPL Receivers
(Please Contact Factory For Other Options)
Receiver Fully Compatible Receivers Available
Measurements Free Running, 1 Hz (Customizable), GPS Time-Stamped
Baud Rate 1200 – 4800 Baud (Factory Settable)
Transmitted Power 250mW Typ, Customizable to 1W
Mechanical
Materials Low-Temperature Tolerant Materials Including HDPE and Metallic
Alloys. Styrofoam is also used.
Mass <120 g
Size 60mm x 60mm x 160 mm Body; Length Excludes a 140mm Sensor
Probe and 200mm Antenna (400MHz Band)
Calibration
Standard In-House Dedicated Calibration Facility
KTMS-3630-DS-Rev 4.3 - June 03, 2013