Multi-antenna collaborative GNSS/low-orbit navigation satellite signal quality monitoring and evaluating method

The invention discloses a multi-antenna collaborative GNSS/low orbit navigation satellite signal quality monitoring and evaluation method, and belongs to the technical field of navigation signal monitoring and evaluation. The method comprises the following steps: acquiring ephemeris, and calculating the starting and ending moments of observation arc sections of all satellites for all parabolic antenna observation stations; judging whether the observation task moments of all the stations coincide or not, if not, selecting the longest arc section of each station as a round of observation task, performing de-duplication processing on the arc sections with coincidence of the observation tasks, and selecting the longest arc section of each station as a round of observation task until observation task distribution is completed; and the navigation satellite carries out multi-dimensional domain monitoring evaluation of a time domain, a frequency domain, a correlation domain, a measurement domain, a service domain and