X射线脉冲星导航聚焦光学及探测器系统关键技术研究

The technique of Automatic navigating is a important direction of development in the field of spacecraft, especially military spacecraft. It will as well be important in deep-space survey. The constant-period x-ray pulsars are ideal tools for navigating in space: By measuring the TOA of several mini-second pulsars and further data analyses, we can get the accurate information for navigating, such as position and direction of the spacecrafts. In this project, we use MPO optical technique to image the x-ray pulsars, and use mDEPFET semiconductor as detector. Key technique includes: the MPO simulation and the optimization of parameters of lens, the design of low mass high accuracy supporting system, the configuration of high accuracy optical system, testing of x-ray optical system, testing of mDEPEET detector system and also the relative electronic development. With the research of key technique of them, we will finish the report of main technique in x-ray pulsar imaging for space navigation.

自主导航技术是航天器，特别是军用航天器发展的重要方向。自主导航将在深空探测中起到重要的作用。周期稳定的X射线脉冲星是理想的天文导航工具：通过对多个毫秒脉冲星的TOA测量并进行相应的算法处理，可以准确地获得航天器的位置、姿态等导航信息。本项目拟开展适用于X射线脉冲星导航的轻量化聚集光学成像和焦平面探测器的关键技术研究，包括MPO光学模拟及镜片参数优化设计、轻质量高精度机械及支撑结构设计、高精度光学系统装配、X射线光学系统测试、mDEPFET探测器系统测试及相应电子学开发工作。将完成原理样机的研制和X射线脉冲星导航探测器的方案设计报告。

自主导航技术是航天器，特别是军用航天器发展的重要方向。自主导航将在深空探测中起到重要的作用。本项目在过去三年开展了适用于 X 射线脉冲星导航的轻量化聚集光学成像和焦平面探测器的关键技术研究，包括 MPO 光学模拟及镜片参数优化设计、轻质量高精度机械及支撑结构设计、高精度光学系统装配、X 射线光学系统测试、CMOS探测器系统测试及对应的数据处理工作。目前光学模拟软件可以完全实现X射线的蒙特卡洛模拟，机械和支撑结构设计已经完成设计和加工，对平面镜的装配结果表明装配误差在2角分之内。X射线光学测试系统基本完成，目前可使用X射线CCD读出测试数据。科学级CMOS探测器正在测试中。