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In order to solve the problem that indoor Global Positioning System (GPS) receivers cannot locate correctly, we propose a virtual satellite indoor navigation positioning system. The system uses GPS signal simulator to generate the signal of the virtual orbit satellite constellation. A variety of constellation geometries can be designed for any location at any time. The virtual orbit constellation can stably maintain a geometric configuration for 4-5 hours with low Geometric Dilution of Precision (GDOP), where the real constellation has a large GDOP and a broken line error. In indoor positioning, there are broken line errors caused by the fact that satellite, indoor antenna and receiver are not in the same line. Therefore, the design rule of the virtual satellite is to minimize this broken line error. We design a new virtual constellation with Elliptically Inclined Geosynchronous Orbit (EIGSO) satellites to reduce the broken line error. Ephemeris data of the virtual orbit satellite constellation is constructed, an indoor satellite signal simulator with four channels is developed, and a virtual orbit satellite constellation signal is broadcast. The experimental test results show that the proposed system can make the indoor satellite navigation receiver position correctly.
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