星间相对测量在三星编队中的应用

以NASA新千年计划中的深空计划3为背景，使用星载类GPS的伪距和载波观测数据，研究利用编队卫星间相对测量，高精度自主确定三星编队星座相对状态的有关问题；研究星间相对测量各种可能的测量方案和可能达到的精度，验证这种星间相对测量技术是否能够满足深空计划3的系统要求．首先建立了三星编队星间相对测量系统的数学模型，然后利用星载高精度伪距和载波观测信息，对各种可能的测量方案进行仿真协方差分析；研究利用卫星姿态机动提供的几何信息，进行单差整周模糊度初始化的问题，讨论了卫星姿态机动方案；最后针对每一种测量方案给出了仿真结果和相关的结论。

APPLICATION OF RELATIVE MEASUREMENT FOR THREE SATELLITES FORMATION

The Deep Space 3 is a proposed mission by NASA within the New Millennium Program. This paper primarily studies the relative state parameters autonomous determination of three satellites formation of the Deep Space 3 using inter-satellite relative measurements of like-GPS carrier phase and a ranging code onboard. To validate this inter-satellite relative measurements technique, various kinds of measurement projects and the accuracy of measure were researched. Firstly, the inter-satellites relative measurements system model of three satellites formation was built. Secondly, various kinds of measurement projects were simulated using high accurate pseudorange and carrier phase onboard. The single different phase bias was initialized with more epochs of pseudorange and phase observations during the relative attitude rotation among the satellites and the optimal initializing projection was investigated. Lastly, the results of simulation/covariance analysis were given.