31results about How to "Improve autonomous operation ability" patented technology

The invention discloses a single satellite autonomous orbit measuring method adopting on-satellite push-broom remote sensing image information. The method includes the following steps that S1, the push-broom remote sensing image information is preprocessed, and multiple mark points, used for autonomous orbit measuring, in a push-broom remote sensing image are obtained; S2, an orbit measuring system model based on the multiple mark points of the remote sensing image is established according to the mark points, used for autonomous orbit measuring, in the push-broom remote sensing image; S3, a preset solving algorithm is adopted for solving orbit information of the orbit measuring system model, after multiple pieces of position information of a satellite on an orbit are obtained, satellite orbit parameters are fit through multipoint orbit position information, and single satellite autonomous orbit measuring is completed. The satellite orbit information is reversed through ground high-precision mark point information, and the autonomy and reliability of remote sensing satellite orbit measuring are remarkably improved.

The invention discloses an initial synchronization method for multiple hot backup computers. The initial synchronization method comprises the steps that each hot backup computer receives the same externally-inputted synchronous clock signal; each hot backup computer finishes the initialization work and then transmits information A to other units, wherein the contents of the information A are that a local computer has synchronous working conditions; a certain hot backup computer receives the information A transmitted by all other hot backup computers and transmits information B to other hot backup computers, wherein the contents of the information B are that when a rising edge of next synchronous clock signal comes in, the current hot backup computer starts to work; after a certain computer receives the information B, the certain computer transmits the information B to other computers; if a certain hot backup computer does not receive the information A transmitted by other computers within continuous N (N is a preset value) synchronous clock cycles, the certain hot backup computer transmits the information B to the other computers. According to the initial synchronization method disclosed by the invention, initial synchronization of the multiple hot backup computers can be realized, and the reliability and the independent operation ability of the hot backup computer are improved.

The present invention is an electric propulsion position maintenance method based on star time drive, which preprocesses the electric propulsion ignition task parameters, and divides them into strategy parameters and attribute parameters according to whether the parameters change according to the characteristics of the task; through star time drive, the parameters are sequentially chronologically Carry out the initialization work before the ignition of each rail of the electric thruster, the steering adjustment of the vector adjustment mechanism, the parameter configuration of the electric thruster, and the processing of the starting arc. The invention realizes the electric propulsion multi-orbit and multi-arc automatic ignition task, improves the satellite's autonomous operation capability, the number of ignition orbits and the number of arcs can be flexibly configured on the ground, and has better flexibility and scalability.