University of Colorado study says record and replay systems are best for GNSS device testing

Asking the question “What is the best way to quantify how well a navigation system performs in a realistic testing scenario?” a study carried out by the University of Colorado recently concluded that the record and playback testing method is the most effective.

Evaluating a range of GNSS receivers, the study found that record and playback systems overcome the fidelity limits of purely simulator based testing, especially in difficult to model environments. The study also emphasised the fact that only one drive is required for each location, ensuring testing repeatability.

A LabSat Record and Replay GPS Simulator was used as part of the study, which the University of Colorado had borrowed on a free loan demonstration for their evaluation. To arrange a free loan please contact labsat@racelogic.co.uk

Read the article here.

Multi-constellation progress…

We are working on upgrades to the existing LabSat hardware which will allow Glonass and Galileo signals to be recorded, replayed and simulated alongside the normal GPS signal.

Multi Constellation Testing with LabSat

The screenshot shows the output of a Glonass enabled GPS Engine (Javad) tracking 5 Glonass satellites and computing a location fix from the RF data coming out of a modified LabSat in our test labs.

The new upgrade will be able to output all three constellations, which will enhance LabSat’s capabilities even further. The release date and prices will be announced in here and on our website.