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Posts Tagged "GNSS simulators"

One of the more surprising consequences from the March 2011 earthquake in Japan was that the forces unleashed shifted the earth's mass sufficiently to accelerate its rotation, shortening each day by no less than 1.8 microseconds, according to calculations by NASA. And while such effects are clearly imperceptible to humans, their cumulative effect on GNSS timekeeping would cause significant inaccuracies that would be unacceptable to any GNSS application. Each GNSS will deal with the time variati...

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In the past, designers of satellite-based navigation systems have been mostly restricted to using a single system and service, the GPS C/A code. The current revolution in the industry is giving rise to not only new GNSS systems, some GNSS systems, notably GPS and Galileo, have multiple services available to the commercial GNSS designer. The question of which system or blend of systems a GNSS designer should consider, along with the potential for multiple services is thus an entirely new conside...

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Why would I use a GPS / GNSS simulator, if I want to do any testing I just stick my antenna out of the window, attach it to my receiver and away I go. Well that’s all good and well but for those requiring a rigorous GPS test environment, live sky testing has some serious limitations including a lack of repeatability, control and scalability. Not to mention the fact that you can’t test future signals in space e.g. GPS L2C and L5, partially deployed constellations or constellations tha...

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