InSAR成像匹配制导技术

Research on Technology of InSAR Image Matching Guidance

关键词:  干涉合成孔径雷达  精确地形匹配  空间定位

Key words:  Interferometric Synthetic Aperture Radar (InSAR)  Accurate terrain matching  Space positioning

摘要:

为了解决飞行器远程全天候高精度自主导航的问题，提出一种InSAR成像匹配制导技术，利用InSAR生成的高程数据与基准高程图进行精确匹配，并通过构象模型反演出飞行器的空间位置。分析对比了多种精确地形匹配方法，采用基于F.Leberl数学模型的空间定位方法并分析了误差影响。仿真结果表明，该方法可以实现飞行器高精度自主导航定位，大大提高飞行器的适应性和抗干扰能力。

Abstract:

A new technology of InSAR image matching guidance is put forward to solve the autonomous navigation problem for long-endurance aerocraft under all-weather condition. The digital elevation model generated from InSAR image and the datum image are matched, and then FLeberl model is used to inverse the precious space position of aerocraft. In this paper, several matching algorithms are simulated comparatively, and the distribution of errors is analyzed. The simulation result shows that this technology applies high precision spacing position, enhancing the adaptability and the ability of anti-jamming for aerocraft.