The invention discloses an autonomous navigation
signal enhancement method based on low-earth-
orbit satellites. The method is implemented by use of a load carried on the low-earth-
orbit satellites, wherein the load comprises a GNSS receiving module, a main control module, an emission module, a high-stability
clock module, at least one set of GNSS
signal receiving antennas and at least one set of enhancement information emission antennas; the GNSS receiving module is used for capturing and tracking navigation
satellite signals and performing on-
satellite autonomous
orbit determination and autonomous time service; the main control module is used for interacting data with the GNSS receiving module and the emission module; the emission module is used for coding result data of on-
satellite autonomous
orbit determination and autonomous time service into telegraph texts and performing
signal modulation and
broadcasting; and the high-stability
clock module is used for providing a time-frequency benchmark. According to the method, by uniting low-earth-orbit
satellite navigation enhancement information and the navigation satellite signals to perform navigation positioning, the precision, availability and reliability of navigation positioning can be effectively improved. Besides, the method does not depend on a
ground station, so that application is more flexible compared with a ground-based enhancement technology.