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嫦娥三号探测器系统两器分离是着陆后进行的第一个关键动作,也是后续着陆器探测和巡视器月面巡视勘察的基础,解决两器安全分离问题对于整个工程的实施具有重要意义。针对实际任务中对分离决策实时性和可靠性要求高的特点,使用基于着陆器监视相机的单像量测方法对月面环境中障碍物和通信遮挡包络进行分析计算,评估两器分离过程中的不安全因素,为两器分离决策提供支持。介绍了监视相机单像量测和通信遮挡包络计算方法,并对量测精度进行了分析验证。
The separation of the two detectors of Chang’e III is the first key action after the landing. It is also the basis for the follow-up lander exploration and lunar patrol inspection. It is of great significance to solve the problem of safety separation between the two devices for the implementation of the whole project. Aiming at the characteristics of real-time decision-making in real-time and high reliability, this paper uses the single-image measurement method based on the lander surveillance camera to analyze and calculate the obstruction and communication occlusion envelopes in lunar environment and evaluate the separation process In the insecurity, to provide support for the separation of two devices. This paper introduces the calculation method of monoscopic measurement and communication occlusion envelope of surveillance cameras, and analyzes and verifies the measurement accuracy.