用信号处理方法提高雷达成像质量

With the support of NSFC, three aspects were researched in the.project. The first aspect was improving the SAR imaging quality by signal.processing methods, the second aspect was the ISAR imaging and the detection and.imaging of slow ground moving target, the third aspect was understanding of SAR.image and target feature extraction. Many good results have been obtained in the.Project, especially, in high resolution, large scene and high squint SAR imaging; in.SAR imaging when the airplane flies unsteadily and precision of motion parameters.measured by navigational instruments cannot satisfy the requirement of motion.compensation; in ISAR imaging of maneuvering target; in the application of.principal components and wavelet analysis in image understanding and feature.extraction. Many imaging algorithms that can improve image quality distinctly have.been brought forward in the project, tens paper have been published at home and.abroad periodicals, and several imaging processor (or software) have been developed.for research institutes to help them improving imaging quality.

从雷达成像机理出发,用统一的系统响应函数、成像投影平面和运动补偿的概念、方法,研究高分辨、高保真和复杂条件下,对条带式SAR、集束式SAR和ISAR,针对各自的实际情况,研究高效的快速算法.同时研究扰动和测量不准的影响,机动目标成像,以及地面低速目标的成像,目标特征提取.配合我国近年SAR和ISAR的快速发展,提供应用理论和方法..