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Filter Design and Observability Analysis for Autonomous Orbit Determination of DSS with Periodic Measurements

机译：周期性测量DSS自主定轨的滤波器设计和可观测性分析

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Autonomous orbit determination of the distributed satellite system (DSS), which is responsible to estimate the absolute position and velocity of satellites by the sensors onboard only, is a basic requirement in many space missions. This paper considers a situation in which only limited sensors are working properly in the whole system, extremely speaking, just one relative measurement device remains. The remaining sensor has to measure other satellites in sequence. Under a periodic sequence assumption, the autonomous navigation was modeled as a periodic system to analyze the observability in this extreme situation. The filter of periodic system is presented and two unobservable situations are given.
机译：分布式卫星系统（DSS）的自主轨道确定是许多航天任务的基本要求，仅由机载传感器估算卫星的绝对位置和速度。本文考虑了这样一种情况，即整个系统中只有有限的传感器可以正常工作，极端地说，仅剩下一个相对的测量设备。其余的传感器必须依次测量其他卫星。在周期序列假设下，将自主导航建模为周期系统，以分析这种极端情况下的可观察性。给出了周期系统的滤波器，并给出了两种不可观察的情况。

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