Efficient and rapid occultation forecasting method based on near space floating platform
A floating platform, near space technology, applied in satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve problems such as large data volume and long calculation time
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[0118] In order to verify the validity of the method proposed by the present invention, it is assumed that the flying height of the stratospheric airship is 10 km from the ground surface, and the ground altitude is 580 meters. The geodetic coordinates of the airship are (34.1423012, 108.9641853, 10580). The wide-beam occultation receiving antenna is placed horizontally, pointing to the south, and the beam width of the elevation plane and the azimuth plane is 60 degrees. What the receiver receives is the broadcast ephemeris at 00:00 on April 21, 2020.
[0119] The first step, through the user algorithm described in step 1, according to the reference time of 1 orbital element contained in the ephemeris, 6 Kepler orbital elements and 9 perturbation parameters, as shown in Table 1, calculate the satellite The coordinates at the interpolation time nodes are shown in Table 2 and Table 3.
[0120] Table 1 GPS satellite broadcast ephemeris parameters
[0121]
[0122] Table 2 PG...
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