A kind of Araim subset selection method and system based on Beidou constellation
A subset selection and constellation technology, applied in the field of satellite navigation, can solve problems such as unavailability, impact analysis results, and uneven constellation configuration
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Embodiment 1
[0076] According to the present invention, this embodiment only examines the rough correction of the azimuth configuration, and adopts the outlier detection method to eliminate satellites that do not need to be assumed to be faulty. In order to make the content of the present invention more clearly described, at first a kind of ARAIM subset selection system based on the Beidou constellation of the present invention is described, as figure 1 A schematic structural diagram of the ARAIM subset selection system based on the Beidou constellation in one embodiment of the present invention shown, a kind of ARAIM subset selection system based on the Beidou constellation includes the Beidou constellation 100 and the aircraft 200, and the Beidou constellation 100 includes 35 satellites (satellites 101 , satellite 102, ..., satellite 135), the aircraft 200 includes a signal receiving antenna 201 and a data processor 22, the signal receiving antenna 201 receives the signal sent by the Beid...
Embodiment 2
[0093] This embodiment only considers the fine correction of the azimuth configuration, and the difference from the first embodiment is that the center of mass with the smallest sum of squared errors is output, and the satellites that do not need to be assumed to be faulty are screened out through the cosine distance.
[0094] In order to illustrate the content of the present invention more clearly, an ARAIM subset selection system based on the Beidou constellation of the present invention will be described. Such as image 3 A schematic structural diagram of the ARAIM subset selection system based on the Beidou constellation shown in another embodiment of the present invention, a kind of ARAIM subset selection system based on the Beidou constellation includes the Beidou constellation 100 and the aircraft 200, and the Beidou constellation 100 includes 35 satellites (satellites 101, satellite 102, ..., satellite 135), the aircraft 200 includes a signal receiving antenna 201 and ...
Embodiment 3
[0129] This embodiment examines the fine correction of the elevation angle configuration. In order to clarify the content of the present invention, an ARAIM subset selection system based on the Beidou constellation of the present invention will be described. Such as Figure 7 Shown is a schematic diagram of the structure of the ARAIM subset selection system based on the Beidou constellation in another embodiment of the present invention, a kind of ARAIM subset selection system based on the Beidou constellation includes the Beidou constellation and aircraft, the Beidou satellite includes 35 satellites, and the aircraft includes signal receiving The antenna and the data processor, the signal receiving antenna receives the signal sent by the Beidou satellite, and sends the signal to the data processor, and performs ARAIM subset selection according to the position coordinates of the satellite, and the data processor selects the subset by the following method:
[0130] a) Divide the ...
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