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Low Power Global Navigation Satellite System (GNSS) Signal Detection and Processing

38

Citations

0

References

2000

Year

Dennis Akos, Per-Ludvig Normark, Jeong-Taek Lee, Konstantin Gromov, James Tsui, J. Schamus
Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000)

Abstract

The ability to detect and process weak Global Navigation Satellite System (GNSS) signals is extremely valuable as the specified received power levels of such signals are already quite low. For example, the GPS-SPS signal specification indicates the signal power at the antenna will be -130 dBm. Such weak detection techniques would be of importance for a number of applications. This paper presents the results of postprocessing acquisition attempts on actual GPS signals of power levels significantly below nominal received power levels. Software based signal processing techniques and extended integration times are utilized to improve signal detection with GPS but are also applicable to GLONASS and other GNSS. Two different approaches, aided and unaided, are explained and exploited in the paper.