The characteristics of present “Beidou” satellite positioning system are analyzed. In order to perfect our country regional satellite positioning system, the idea of “Beidou” geosychronous earth orbit (GEO) satellites combined with some middle earth orbit (MEO) satellites constellation is put forward. The details of general satellite constellation optimized method are described, using this method the multiple positioning constellation design results are gained. And those results belong to two type of schems, one is 2 GEO plus some MEO satellites and the other is 3 GEO plus some MEO satellites. Through simulation and comparison, among those multiple design results, final optimized regional positioning constellation is given. In order to check the chosen constellation cover performance, the position dilution of precision(PDOP) is calculated, and with satellite constellation simulation software Satlab many coverage performances of the chosen constellation substellar point track, elevation, azimuth and visible satellites number changing situation are also simulated.
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机译:ETUDE DEs可供选择D'UTILIZaTION INDUsTRIELLE DE L'aQUYZE paR活化pO LE剂量DE L'OXYGENE ET EVENTUELLEmENT DE L'aZOTE ET DE L'HYDROGENE DaNs LEs aCIERs Troisieme partie DIsCUssION DEs EssaIs ET结论TIRER DE L'ETUDE