Design of Satellite-Ground Integrated Universal Test Scheme for Spacecraft Navigation Receivers

Spacecraft navigation receiver is an integral part of spacecraft tracking and orbit measurement subsystem, and its reliability is crucial for the stable operation of spacecraft in orbit. However, in the stage of spacecraft comprehensive testing, there are some problems in the existing technology of testing spacecraft navigation receivers, such as the inability to form a closed loop, high manual participation, and low test efficiency. In this paper, a universal architecture of a satellite-ground integrated spacecraft navigation receiver test system is designed. Ground-based test equipment and telemetry data are combined to realize real-time closed-loop test and interpretation of navigation receiver. A navigation receiver test and evaluation technology oriented toward simulated flight missions is proposed, and a stability evaluation of long-term operations is realized. The method proposed in this paper is successfully applied to a spacecraft comprehensive test, which solves the practical problems and improves test efficiency.