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9
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vol 63 / September, 2020
Article

DOI 10.17586/0021-3454-2016-59-4-261-267

UDC 621.396.9

SIGNAL PROCESSING OF SATELLITE NAVIGATION SYSTEMS WITH QUADRATURE MULTIPLEXING AND FREQUENCY DIVISION

A. P. Aleoshkin
Mozhaisky Military Space Academy, Department of Aerial-Feeder Transmitting Devices, St. Petersburg; Professor


V. S. Bakholdin
Mozhaisky Military Space Academy, Department of Space Radiolocation and Radionavigation, St. Petersburg;


D. A. Gavrilov
Mozhaisky Military Space Academy, Department of Space Radiolocation and Radionavigation, St. Petersburg;


D. A. Lekontsev
A. F. Mozhaisky Military Space Academy, Department of Space Radiolocation and Radionavigation; Adjunct


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Abstract. New algorithms for processing of signals from global satellite navigation systems are proposed. The algorithms increase the system resolution, accuracy of the time delay estimation, and improve the signal-to-noise ratio in the problems of navigation, signal detection and recognition. An estimate is derived for accuracy of navigation problem solution with the use of differential measurements. Results of experimental processing of GLONASS signals with frequency division multiplexing are presented to demonstrate the increase in signal-to-noise ratio when the algorithm of joint processing of signal from two navigation spacecraft is applied.
Keywords: quadrature multiplexing of signals, the signal-to-noise ratio, frequency division multiplexing, software processing of navigation signals

References:
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