Quick locating method based on GEO constellation coarse location for Beidou receiver

The invention provides a quick locating method based on GEO constellation coarse location for a Beidou receiver by use of the characteristic that the GEO satellite in the hybrid constellation of the Beidou system is high in message rate, and solves the problem that when the outline coordinates of a receiver are unknown, the millisecond recovery algorithm for the traditional GNSS signal transmitting time cannot be applied due to a leap of calculated quantity. When the outline coordinates of the receiver are completely unknown, the GEO satellite of which the signal transmitting time is completely acquired is used at first for coarse location, then the millisecond integer time of the sending time of a non-GEO satellite is recovered according to the outline coordinates acquired by coarse location, and finally, all the visible satellites are utilized for accurate location. The quick locating method can achieve millisecond recovery of the non-GEO satellites which finish capture when the Beidou system only finishes frame alignment of GEO constellation, so that the time to first-time location of the receiver when the satellite ephemeris is known is earlier.