Autonomous orbit control method, device and system for low-orbit satellite

The invention discloses an autonomous orbit control method, device and system for a low-orbit satellite, and the method comprises the steps: transmitting a request message to at least one ground terminal; receiving feedback information of the at least one ground terminal, and determining at least one ground terminal for autonomous orbit control assistance according to the feedback information to obtain at least one auxiliary ground terminal; sending configuration information to the at least one auxiliary ground terminal; receiving a linear frequency modulation signal sent by the at least one auxiliary ground terminal; calculating current orbit information of the low-orbit satellite by using a synthetic aperture radar algorithm according to the linear frequency modulation signal; and executing autonomous orbit control according to the current orbit information. According to the autonomous orbit control method for the low-orbit satellite, the problem that orbit control of the low-orbit satellite cannot be achie