SatGen Signal Simulation Software

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Novatel SatGen screenshotSatGen Signal Simulation Software can be used with LabSat Wideband to simulate all major constellations and signals.

If you need to record, replay or simulate multi-frequency, multi-constellation signals, then we have an easy to use, and cost-effective solution.

SatGen software allows you to create a GNSS RF I&Q or IF data file based on a user-generated trajectory file that can be replayed on a LabSat GNSS Simulator. This allows you to simulate almost any kind of test, at a set time and date, anywhere in the world.

For example, say you are based in Europe, but your GPS devices will be deployed throughout the world. With SatGen you can create a test scenario for virtually any location, including hostile areas for which live-sky field testing might be impossible.

This allows you to verify that your GPS equipment performs as required, in a variety of locations that may be geographically remote from your facility.

LabSat Wideband conncted to GNSS engineSatGen complements the LabSat range of GNSS simulators, and is available in single, dual, triple and multi-frequency/multi-constellation versions.

Of course, LabSat can record and replay live data, but creating an artificial scenario allows you to precisely control the data content, create a ‘gold standard’ file for carrying out true comparisons between receivers.

From your bench you can try different acceleration levels, crossing different time zones, the equator,leap second roll-over and many hard to replicate tests.

The latest version of SatGen can be used to create a single scenario containing all the upper and lower L Band signals for GPS, GLONASS, and BeiDou, and will take advantage of the LabSat 3 Wideband’s ability to read RF data at up to 80 MB/s.

GPS L1L2CL5 Glonass L1L2  BeiDou B1B2   Galileo E1E5E6

What constellations & signals can I create?

  • Single Constellation - Create single constellation scenario files for GPS L1, GLONASS L1 or BeiDou B1
  • Dual Constellation - Create dual or single constellation scenario files for GPS L1, GLONASS L1 or BeiDou B1
  • Triple Constellation - Create triple, dual or single constellation scenario files for GPS L1, GLONASS L1 or BeiDou B1
  • Wideband - Create LabSat 3 Wideband scenario files for:
    GPS L1 C/A, M, P; L2, C, P, M; L5, I, Q ( L1M, L2M noise created only)
    BeiDou: B1I, B1-2I, B2I (BeiDou B1 special almanac including BeiDou future satellites)
  • Real-Time – Create real-time GPS, GLONNASS, BeiDou L1 signals with the additional LabSat RT dual constellation system

How does SatGen work?

SatGen can be used to create a scenario which replicates very high dynamic conditions, allowing engineers to test their systems work in all environments. You could simulate an aircraft taking off and going into a vertical climb up to 30,000 feet, and then performing a high g-turn at this altitude, all without leaving your bench!

Creating your own scenarios couldn't be easier. If you have an NMEA file which contains GGA data, then you can import this directly into the software or alternatively, you can start from scratch by creating a route in Google Earth, or build a profile using simple user commands.

Developed with the user in mind, this software allows you to create a static scenario, where a position can be manually inserted or easily determined using the integrated Google Maps screen. You can also draw a route by simply clicking-on a series of locations on the map.


SatGen includes a range of predefined command buttons and scenario examples (including figure-of-eight, circle around a point and aircraft take-off). These pre-set scenarios allow you to test a device by making a few simple clicks.

To find out more about how SatGen can be used to simulate GNSS scenarios, contact .

Is SatGen right for you? Why not try it out?

To enable you to experience the full power of the SatGen Simulation Software, we provide a demonstration version which will allow you to try all new features.

Fill out my online form.

It's a full copy of the SatGen software but is restricted to create GPS-only scenarios (no other constellations) for only 120 seconds.

This will allow you to trial the use of SatGen in your own test facility or laboratory.

Please note that the SatGen v3 Simulation Software requires a 64 bit windows operation system and will not install on a 32 bit system.

To receive a free copy of this demo version, please complete the form on the left.

For more information on SatGen or a quote, please contact your local LabSat distributor or RACELOGIC directly.

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GNSS Frequency Guide - LabSat 3 Wideband

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This helpful application can be used to select and look up GNSS frequencies and signal locations. The GNSS Frequency Guide is based on the LabSat 3 Wideband's integral web interface which enables you to setup and manage the GNSS testing program from a PC. You can see a demo of the web interface here.

How to use the GNSS Frequency Guide

Move the coloured bandwidth boxes in diagram above to change the centre frequencies (press left mouse button and drag to left or right). Select your bandwidth requirement - select your required frequencies -  see available quantisation levels.

Show individual signals

10 MHz    30 MHz    56 MHz   

1 Band    2 Bands    3 Bands

Current quantization:

Move coloured bandwidth boxes in diagram above to change centre frequencies (press left mouse button and drag to left or right)
Band 1: 1575Mhz-1575Mhz
Band 2: 1575Mhz-1575Mhz
Band 3: 1575Mhz-1575Mhz


  • 1) Select signal display: All signals including 'show individual signals'.
  • 2) Select '56 MHz' bandwidth.
  • 3) Select one signal band '1 Band'.
  • 4) Note quantisation is 3 bits.
  • 5) Move the red box to select the centre frequency.
  • 6) Select different bandwidth/channels to explore full capability.


Bandwidth Setting:

LabSat 3 Wideband has three bandwidth settings. 56 MHz, 30 MHz and 10 MHz.

The bandwidth of the GNSS signals varies, for example a GPS L1 C/A code signal has a bandwidth of 24 MHz. However, due to the signal design a bandwidth of 9.66 MHz will capture enough data to allow the receiver under test to acquire, track and navigate as with LabSat 3 single, dual and triple constellation devices.

Other signals with a different signal design like Galileo E1 PRS signal has a bandwidth of 46 MHz and a signal design spread across the bandwidth.

Many other signals have a similar requirement like GPS L1/L2 P code and M code. LabSat 3 Wideband has been designed to capture all these signals.

Frequency Setting:

LabSat 3 Wideband is designed to capture and replay GNSS signals in the upper L-Band (1559 - 1610 MHz) and lower L-Band (1164 - 1300 MHz).

Quantisation setting:

LabSat 3 Wideband can record and replay GNSS Signals at quantisation levels of:

  • 3 bits (3 bit I + 3 bit Q)
  • 2 bits (2 bit I + 2 bit Q)
  • 1 bits (1 bit I + 1 bit Q)

Step by Step instructions to upgrade LabSat 2

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Upgrade your firmware

  • Download the Racelogic Upgrader software that is used to upgrade your LabSat 2.
  • Unzip and install the software by running the Setup executable file.
  • Plug the upgrade jumper (RLACS161) into the LabSat 2 D-type connector.
  • Connect the power supply to the LabSat 2.
  • Connect the mini-USB cable between the "GPS Monitor" port on the LabSat 2 and the computer.
  • Download the latest LabSat 2 firmware.
  • Unzip and double click on the firmware upgrade .RUF file.
  • The upgrade process will start automatically once you have confirmed that the upgrade pin has been grounded in step 3.
  • Once complete, remove the RLACS161 jumper and power cycle the LabSat 2.

Upgrade your LabSat 2 software to use the new features

  • Download the latest LabSat Software.
  • Unzip and install the software by running the Setup executable file.
  • Ensure the USB cable is connected to the Data port on the LabSat and run the new LabSat software from the Start Menu.



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LabSat is designed and manufactured by RACELOGIC Ltd., experts in the field of GPS testing and data logging. Based in the UK with additional offices in Germany and the USA, RACELOGIC are an ISO 9001 company that supplies specialised GPS based test equipment to many well known corporations, in over 80 countries around the world.


We design and manufacture electronic systems to measure, record, display, analyse and simulate data from moving vehicles.

Started by Julian Thomas in 1992, RACELOGIC thrives on technical innovation from its offices in Buckingham in the UK, Detroit in the USA and Weilburg in Germany, and has been awarded the Queen's Award for Enterprise.

We sell our products to 100 different countries and have distributors in more than 50 countries globally.

Our GPS data logger brand VBOX has become an industry standard way of measuring speed, position, distance and acceleration, whilst our Video VBOX video loggers are increasingly popular in motorsport.

2009 we launched LabSat. With the ability to record, replay, and simulate GNSS RF data, it was originally designed to calibrate VBOX units. However, potential was seen to offer this to manufacturers of GPS devices, and it is finding popularity in markets as diverse as navigation systems, mobile phone development, and defence. Bosch, Garmin, Qualcomm, Broadcom, and Samsung make up part of the growing list of customers for LabSat.

For more information on RACELOGIC visit

Legal information

RACELOGIC is a limited company registered in England.

  • Company Registration number: 2743719
  • VAT Registration number: GB581435437
  • Registered Office: Unit 10, Swan Business Centre, Osier Way, Buckingham, Bucks, MK18 1TB

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