Quantum ranging and inter-satellite angle measurement combined double-satellite orbit determination method and system and computer equipment

Abstract

The invention belongs to the technical field of satellite orbit determination, and discloses a quantum ranging and inter-satellite angle measurement combined double-satellite orbit determination method and system, and computer equipment. Sunlight pressure perturbation and earth radiation perturbation are added to a high-orbit satellite, an orbit perturbation model is established, and a shot motion equation in real-time orbit determination is obtained. The quantum distance measurement unit realizes emission, receiving and coincidence counting of entangled two-photons, and measures and calculates a relative position vector of two satellites. The inter-satellite angle measurement unit sends simulated data to the sensor image unit for processing, and the included angles between the base line of the connecting line of the two navigation satellites and the two fixed stars are obtained. The orbit height measurement unit obtains elevation information of a satellite orbit, and the three units form a measurement model. Unscented Kalman filtering of a recursive process is adopted in orbit estimation. The feasibility of the scheme is proved in a numerical simulation unit. According to the method, under the condition of being separated from a ground station, distance measurement between satellites is achieved through quantum distance measurement, the distance measurement precision can reach the mm level, and high-precision navigation satellite autonomous orbit determination is achieved.

Description

technical field [0001] The invention belongs to the technical field of satellite orbit determination, and in particular relates to a double-satellite orbit determination method, system and computer equipment combined with quantum ranging and inter-satellite angle measurement. Background technique [0002] Due to the development of satellite technology and the growth of mission requirements, the number of satellites has increased geometrically, and the orbits of satellites are often different, and their complexity is getting higher and higher. For the traditional method of relying on ground stations to obtain information such as satellite position, velocity, and attitude to determine the orbit of satellites, it is necessary to establish more ground stations and improve the measurement and control capabilities of ground stations, which requires greater costs. . When the ground station is out of control or the connection is interrupted, it is also necessary to rely on the inte...

AI Technical Summary

Problems solved by technology

[0004] Through the above analysis, the problems and defects of the existing technology are: the existing navigation satellite network is becoming more and more complex, the problem of bringing more pressure on the ground station and the problem that the ground station may be out of control, and how to improve the satellite real-time The accuracy and duration of the orbit, thereby improving the performance of satellite applications and completing more demanding high-precision detection and forecasting tasks

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