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December 23rd, 2011
Record and Playback for GNSS Testing

Record and playback (RP) systems are increasingly popular in the GNSS receiver testing and validation process. For this reason, it’s important to have a better understanding of the RP’s contribution to the tested receiver’s raw measurements. Through documented laboratory test results and real field-usage cases, this paper confirms that RP systems can replay previously recorded signals so that its impairments are undetectable or at least acceptable for most GNSS receivers/applications. As well, the RP significantly reduces the amount of time, and the number of resources, required when GNSS receivers have to be stressed in the presence of real-time, real-world signals. Read More