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GNSS Record & Playback Complements Testing With Simulators

All Global Navigation Satellite Systems (GNSS) work by measuring the transmission-time delay from a satellite to the receiver. With a clear view of the sky and an unobstructed path to multiple satellites a modern GNSS receiver is able to calculate its position rapidly and accurately. However atmospheric propagation effects can alter the speed of the signals to an indeterminate degree, signals can be obscured by buildings or reflected off surfaces such as the sea, all of which will compromise the performance of the receiver, reducing accuracy, extending acquisition time or reducing sensitivity.

Thorough evaluation of receiver performance requires that the impact of these various sources of impairment is assessed. An emerging technique for performing this testing is by Recording the RF signal for subsequent Playback in the lab.

Spirent’s GSS6400 Record & Playback System now enables you to bring the complexity of the GNSS world back into your lab.

The GSS6400 complements Spirent's established range of navigation and positioning simulation systems. While simulators generate the specific controlled signals which are needed to develop and test the performance of navigation and positioning systems, the GSS6400 captures the full "richness" of the real world environment which can then be replayed in the lab. The captured data includes real world fades, multipath and in-band interference as well as direct signals from GNSS satellites.

The GSS6400 Record & Playback System is:

  • Simple to operate
  • Provides repeatable test environments
  • Represents real world conditions
  • Makes collaboration easy with scenarios portable between units
 
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