Beidou satellite selection method based on satellite signal energy and spatial orientation information

The invention discloses a Beidou satellite selection method based on satellite signal energy and spatial orientation information, and solves the problem of satellite selection under extreme conditionsthat a shielding object exists and the like. The method comprises the following steps of firstly, obtaining the intensity, defined in the specification, of each satellite carrier signal captured by aterminal through a blind separation model; secondly, substituting the intensity, defined in the specification, of each satellite carrier signal, as the weight into a direction cosine matrix of a satellite relative to a geocentric coordinate system, thereby generating a matrix G of orientation and intensity; and finally, calculating out a geometric dilution of precision (GDOP) by the matrix G of orientation and intensity, and obtaining a satellite combination corresponding to a minimum value of the GDOP, wherein the obtained satellite combination is a to-be-selected satellite combination. According to the method, the s