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We offer a wide range of data acquisition products like our ADAS test systems, VBOX 3i data loggers, VBOX Speed Sensors and modules. See the full vehicle testing range here.

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Our Video VBOX camera systems, performance meters such as PerformanceBox, DriftBox and VBOX Sport and lap timers are increasingly popular in motorsport. See the full motorsport range here.

Racelogic Support

RACELOGIC prides itself on giving outstanding support and assistance to our customers. The new online Support Centre gives people the opportunity to quickly find all the information they need, and our Support Department is on hand to answer email and telephone enquiries. 

Can products

Generate a wheel speed and engine rpm pulse from a vehicle's CAN Bus using RACELOGIC CanTran, obtain engine and road speed with the CAN Speed Interface and display any parameter that is sent on a CAN Bus in real time with the CAN Display.

LabSat GNSS simulators

LabSat GPS Simulators are used to test GPS enabled products by recording, replaying, and simulating GNSS data.

Switch to the LabSat Website for more information.

GPS Simulation

Posted in Applications

“We believe that many companies in the GPS Industry could enjoy huge benefits from using a simulator; our goal is to make this fact known, and then show that the process isn’t difficult or expensive.”

Visit for more information on our GPS simulator range.

Why simulate GNSS signals?

GPSDuring the development and testing of electronic systems incorporating global navigation satellite systems such as GPS, Galileo, BeiDou or GLONASS, it is very useful to have position, velocity and time data being fed into the system under test, to evaluate how well the system operates.

Static GPS Testing

If you are interested only in static tests, then you can use a live antenna to provide the feed to the GPS engine. The disadvantage of this method is that the signal changes all the time, so you can't reproduce the same conditions twice.

By using GPS simulation you get the same signal strengths, satellite numbers, atmospheric effects and UTC time whenever the test is run, making benchmarking and testing much more consistent.

Dynamic GPS Testing

If your application involves moving the system under test, to assess it in a dynamic environment, then normally you would need to fit your electronics to the target vehicle or aircraft, and test in the field. This is expensive and time consuming, and conditions change each time the procedure is run.

By using a GPS simulator with a dynamic scenario, you can replay the moving data directly into the GPS engine under test as many times as you like.

Please click on the blue item headers to expand or collapse their content.

How to make GNSS testing realistic yet repeatable

If you have a very specific dynamic test, you have several options:
  • Record from a live antenna, using a GPS RF Recorder
  • Create the scenario artificially using a user defined trajectory and then replay through a GPS RF Replay unit
  • Use a dedicated full constellation simulator
With these methods, the GPS data is identical every time the test is run - including all of the signal strengths, the number of satellites in view, the time of the test, and the exact path taken by the vehicle.

You save a lot of time, expense, and inaccuracies by testing on the bench rather than taking the system out in the field each time!

What GPS simulators are available?

There are three types of simulator:

  • GPS engine simulators
  • RF signal record/replay simulators
  • Full constellation simulators

GPS Engine Simulators

GPS engine simulators are the most basic option, and generate the same output as a GPS / GLONASS engine, normally in the form of a serial NMEA type message. To use this kind of simulator, the GNSS engine is removed completely from the target system and the signals are injected into the rest of the circuit. These are used mainly by system integrators who are not interested in the performance of the GNSS engine itself. These simulators are generally software, and output data on a serial port.

LabSat3-SatNavGPS RF Record / Replay systems

RF record/replay systems, such as RACELOGIC’s LabSat, sample the RF signal from a live GPS/GLONASS/Galileo/BeiDou/QZSS antenna(s) at a very high rate and store this to a hard drive digitally. This data can then be replayed directly into the RF front end of a GPS/GLONASS/Galileo/BeiDou/QZSS engine, faithfully reproducing the original signal.

Full Constellation Simulators

SatGenv2-Screen-montageFull constellation simulators, such as RACELOGIC’s SatGen software, generate all satellite signals from scratch. This is combined with a user defined trajectory file to create an artificial GPS signal. This can be done in real time using dedicated (but expensive) hardware, or processed offline on a normal PC which then creates a data file which can be replayed using a more simple record/replay system.

How to record, replay, and simulate GNSS Signals

LabSat is an RF Record/Replay system, which will capture real world, realistic data, and play it back as many times as required for testing. RACELOGIC also produce the SatGen simulation software, which has the ability to create a full constellation scenario, and then replay it using LabSat.

Who can benefit from a GNSS recorder, replayer, and simulator?

LabSat is designed for GPS chipset test and development, GNSS system integrators across industries as diverse as automotive, defence, marine, and government. Manufacturers of GNSS devices even use LabSat at events to demonstrate their products to end users, and in the testing of faulty units.

The ability for LabSat to integrate with RACELOGIC’s Video VBOX offers video synchronisation alongside the GNSS data, while the use of external modules allows external data to be recorded from a variety of sources, offering many testing possibilities.

LabSat is now used by leading OEM and mobile device companies such as Bosch, Garmin, Nokia, RIM, and Thales to test their devices in real world yet repeatable conditions. Have a look at some of LabSat’s users (Customer Profiles tab).

Find out more about LabSat by contacting us or reading more on our product page.

Visit for more information on our GPS simulator range.

  • The RACELOGIC History - From the beginning in 1992 to now.
  • 1992
  • RACELOGIC Traction Control was launched.
  • 1996-Switchlogic
  • 1997
  • 1998 - Chris, Harry and Amanda joined RACELOGIC.
  • 2000 - US Government switched off the deliberate scrambling of the GPS signal.
  • 2001-First-VBOX-launched.
  • 2002 - VBOX II DCF launched, which sold over 400 units.
  • 2003-MK-citizen-business-award
  • 2004 - VBOX GPS Data Logger Range
  • 2006-DriftBox-released
  • 2006-Performance Box released.
  • 2006-Racelogic office in Germany set up.
  • 2006-VBIISL3
  • 2007-Racelogic are awarded the Queens-Award
  • 2008 - New premises
  • 2008-VB3i released.
  • 2008- Video VBOX launched.
  • 2009 - Video VBOX Lite launched.
  • 2009-LabSat GPS Simulator launched.
  • 2009-First VBOX ADAS Test System sold.
  • 2009-Circuit Tools released after four years of development.
  • 2010 Leander
  • 2010-VVBPro
  • 2011-Graham-VBOX3i-Dual-Antenna
  • 2011- Predictive Lap Timing Awards
  • 2011-Video VBOX Waterproof is launched.
  • 2012: RACELOGIC wins two  Queen's Awards for Enterprise.
  • 2012-VB3iSL-RTK
  • 2012-US-office
  • 2013: VBOX Sport and RACELOGIC iPhone apps launched.
  • 2013-LabSat3
  • 2013: VBOX HD Motorsport launched
  • 2014: VBOX Lap Timer launched.
  • 2014: Racelogic sold to the 100th country.
  • 2015 Representative office China
  • 2015 golden LabSat
  • 2015 Traction Control