弹载合成孔径雷达弱特征区景象匹配制导实时图的高效高精度几何校正方法研究

项目名称： 弹载合成孔径雷达弱特征区景象匹配制导实时图的高效高精度几何校正方法研究

项目编号： No.61304231

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 自动化技术、计算机技术

项目作者： 王青松

作者单位： 中国人民解放军第二炮兵装备研究院

项目金额： 26万元

中文摘要： 利用弹载SAR进行景象匹配修正INS误差，已经成为提高导弹制导精度的一种有效措施。目前，由于弹上无法实现SAR图像的实时高精度几何校正，从而要求景象匹配区高程起伏较小且含有典型地物特征。而地形起伏较大、不含典型地物特征的弱特征区，由于其SAR图像几何畸变严重，不能作为目前弹载SAR的景象匹配区，这严重制约了导弹武器的实际作战能力。本课题围绕"弹载SAR图像几何校正精度影响因素及规律分析"、"高动态运动参数建模"、"非零多普勒成像条件下弱特征区实时图高精度几何校正方法"、"崎岖场景图像几何畸变校正方法"等内容开展深入研究，重点解决"弹载SAR成像高动态运动参数的高精度建模"、"弹载SAR输入参数的系统误差自修正技术"和"非零多普勒成像条件下SAR几何校正模型的高精度逼近方法"三项关键技术问题，提出高效高精度弹载SAR弱特征区实时图几何校正方法，从而提升弹载SAR景象匹配制导适应性和制导精度。

中文关键词： 弹载合成孔径雷达；景象匹配；几何校正；；

英文摘要： Missile borne Synthetic Aperture Radar (SAR) is used for the scene matching to correct the error of the Inertial Navigation System (INS) has become an effective measure to improve the precision of the missile guidance system. Due to the side-looking and topographic changes on SAR imaging geometry, the geometric distortion of SAR real-time image will affect the precision of the scene matching, thus the geometric correction processing is needed. Compared with the air borne and space borne SAR systems, the geometric correction of the missile borne SAR real-time image needs to solve some special issues caused by the applications and platforms. Here we studied on "the interfering factors and characteristics analysis of the geometric correction precision for the missile-borne SAR image", "missile-borne SAR imaging with high dynamic motion parameter modeling", "the high efficiency and high precision geometric correction method in non zero Doppler imaging" and "the correction method for image geometric distortion in rugged scene" etc. Focused on "the high precision modeling for the high dynamic motion parameter of missile borne SAR imaging", "the system error self-correction technology of the missile borne SAR input parameters" and "the high accuracy approximation method for SAR geometric correction model in non zero D

英文关键词： missile borne synthetic aperture radar；scene matching；geometric correction；；