空间X射线天文探测技术日益朝着低噪声、低功耗、大面阵的方向发展，而X射线CCD探测器具有同类型高能粒子探测器无法比拟的能量与空间分辨综合性能，在X射线天文探测领域具有广阔的发展前景。因此，开展面向空间应用的低噪声、低功耗，大面阵X射线CCD读出技术的研究具有非常重要的科学意义和实用价值。本项目定位于低功耗、低噪声、大面阵X射线CCD读出技术的基础研究，包括理论算法研究、ASIC实现研究与验证，为最终实现一款具有抗辐照功能的低功耗、低噪声、大面阵X射线CCD读出ASIC进行前期关键技术验证，并为未来X射线天文探测项目的立项储备关键技术，提供理论依据与实验数据。拟实现以下两个具体目标：一是研究利用Sigma-Delta技术处理X射线CCD信号的理论与算法；二是利用前述理论与算法设计一款多通道超低噪声ASIC，并进行硅片验证。

Space X-ray astronomical detection techniques have been extensively developping towards the trend of low noise, low power and large scale.Owing to the incomparable comprehensive performance over similar detectors for high-energy particles in terms of both energy and spatial resolutions, X-ray CCD has a broad application prospect in X-ray astronomy field. Therefore, researches on low-noise, low-power, large-scale X-ray readout techniques for space applications have important scientific meanings and practical value. This project focuses on the fundamental research on X-ray CCD readout techniques, including theory, algorithm and ASIC techniques, which are inevitable for the realization of a practical ASIC for space applications on the long run. It aims to realize two specific goals: one is the development of theory and algorithm for the application of Sigma-Delta technique on X-ray CCD signals, the other is the implementation and verification of a multi-channel, ultra-low noise ASIC.