The Mitigation of Multipath Errors by Strobe Correlators in GPS/GLONASS Receivers |
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| Authors: | Victor A Veitsel Alexey V Zhdanov Mark I Zhodzishsky |
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| Institution: | (1) Moscow State Aviation Institute (MAI), Chair 402, 4 Volokolamskoe Shosse, Moscow, Russia, 125871 (RU), RU |
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| Abstract: | An effective method of decreasing multipath errors in GPS or GPS/GLONASS receivers by changing delay lock loop correlator
reference signal is discussed. Unlike other approaches, this method does not lead to apparatus complication, power comsumption
increase, or augmentation of digital processor load. This method eliminates the multipath error completely if the difference
in delays of direct and reflected signal is more than 30 m, and decreases this error for smaller delays. The cost of such
decrease is that the noise error is decreased. However, the noise error is much less dangerous than the multipath one because
of its smaller value and much shorter correlation interval. Calculated and experimental data for the method are given for
multipath and noise errors. ? 1998 John Wiley & Sons, Inc. |
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