CPC G01S 19/396 (2019.08) [G01S 19/22 (2013.01); G01S 19/25 (2013.01); G01S 19/31 (2013.01); G01S 19/51 (2013.01)] | 12 Claims |
1. A positional error prediction device comprising:
a satellite position acquisition unit that acquires a position of a satellite from which a signal can be received, at target date and time on a target point at which a positional error prediction is performed;
a relative relationship value acquisition unit that acquires a relative relationship value between the position of the satellite and an observation start position of the satellite at the target point, wherein the observation start position of the satellite is a position at which a reception of the signal from the satellite is firstly started at the target point; and
an error prediction unit that predicts a positional error at the target date and time on the target point, based on the relative relationship value and a positional error prediction model generated in advance,
wherein the relative relationship value acquisition unit acquires the relative relationship value based on a multipath generation region, wherein the multipath generation region is defined as a partial region in an orbit of the satellite by a predetermined distance threshold from the observation start position in a region from the observation start position to a zenith of a celestial sphere centered on the target point.
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