GPS World, May 2011
INNOVATION Algorithms Methods Smoothing GNSS Doppler Measurement Overview Beat Frequency a b FIGURE 3 Smoothed pseudorange errors observed range deviations using the traditional Hatch carrier smoothing filter a and the Doppler smoothing filter b Smoothing filter length in the experiments for both filters was set to 100 seconds Satellite PRN G28 was chosen to represent a satellite at medium to high elevation angle 50 GPS World May May 2011 2011 www gpsworld com Doppler Smoothing Algorithm Description
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