Quick star selection method based on Beidou satellite signal intensity weight optimization model
A technology of signal strength and optimization model, applied in the field of Beidou navigation, it can solve the problems of slow operation speed, large amount of calculation, inability to achieve convenience and speed, and achieve the effect of small storage space, accelerated calculation speed, and easy implementation.
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[0038] In the extreme case of occlusions, the information of eight satellites is obtained including the elevation angle φ N , depression angle ψ N , signal amplitude A N . List the data as follows:
[0039] satellite serial number
[0040] figure 1 Be the flow chart of the present invention, at first obtain bearing and strength matrix G by Beidou satellite signal strength weight optimization model, then eight satellites (N=8) data collected in the table above comprise the strength of each satellite carrier signal and the elevation angle φ i , azimuth ψ i , into the azimuth and intensity matrix G, without loss of generality, set the parameter g=1. Get G as follows:
[0041]
[0042]
[0043] After the satellite energy is calculated by the blind separation algorithm, the satellite L with the largest energy is obtained 1 is the maximum carrier signal energy A 1 For the corresponding satellites, the remaining three satellites are determined by non-negativ...
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