集群微波遥感卫星随机构型成像与图像质量评估研究

With the rapid development of real–time identifying space target demand is increased, meeting the demand becomes more and more attractive using microwave remote sensing satellites. The indeterminate characteristic of remote sensing satellite network configuration will last for some time to come. A new approach of real–time target imaging and imaging quality evaluating is proposed, and the quantificational theoretical model of imaging performance is established. The project strives for a breakthrough in the difficulty of qualitative analysis of target reconstruction capability, through intensive studies of the two base and core theories, which are inner-correlation between indeterminate configuration and target reconstruction and also the fuzzy entropy theory. The method and evaluation technique quantificational theoretical model, method and evaluation technique are eventually created. The technical support is provided , which will broaden the area of application of traditional microwave remote sensing satellite. The distributed radar imaging based on compressive sensing theory is improved to provide the basic premise for the subsequent relying on this topic unit resources to carry out experimental verification, and the imaging quality evaluating standard is expanded, which will obtain a significant progress in science and application perspectives.

随着对空中/空间目标实时探测成像的需求日益增长，利用集群微波体制的遥感卫星实现该需求的方式越来越受到重视。针对目前和未来一段时间，我国遥感卫星组网构型呈现的随机和不确定的典型特征，提出了随机构型下目标实时成像方法和图像质量评估技术，并建立了对成像性能定量化表征的理论关系。为了实现这一目标，本项目通过深入研究随机构型与目标重构能力的关联性和模糊信息熵理论等两个核心基础理论，突破目前关于目标重构能力的研究局限于定性分析的难点，最终形成定量化理论模型、方法和评估技术。不仅为拓展目前遥感卫星的应用领域提供了重要的理论支撑，为后续本课题依托单位优势资源开展实验验证提供了基本前提，而且完善了分布式压缩感知成像理论，扩展了微波遥感卫星图像评估标准，对它们应用范围的扩展和延伸有着较强的实用价值和科学意义。

随着对空中/空间目标实时探测成像的需求日益增长，利用集群微波体制的遥感卫星实现该需求的方式越来越受到重视。针对目前和未来一段时间，我国遥感卫星组网构型呈现的随机和不确定的典型特征，提出了随机构型下目标实时成像方法和图像质量评估技术，并建立了对成像模型定量化表征的理论关系。课题设置了集群微波遥感卫星随机构型的成像理论研究，基于压缩感知的定量化目标重构概率理论研究，时空两维智能随动波束同步技术研究，基于模糊信息熵的目标反演图像质量评估技术研究等四项研究内容，研究内容3的成果已经应用于GF-3卫星的测试，并在轨进行了验证，对GF-3卫星成像质量的提升发挥了重要的作用。不仅为拓展目前遥感卫星的应用领域提供了重要的理论支撑，为后续本课题依托单位优势资源开展实验验证提供了基本前提，而且完善了分布式压缩感知成像理论，扩展了微波遥感卫星图像评估标准，对它们应用范围的扩展和延伸有着较强的实用价值和科学意义。