国防科技大学学报2017，Vol.39Issue(4)：105-109,5.DOI:10.11887/j.cn.201704016
结合景象匹配与惯导信息的SAR平台定位方法
SAR platform location method based on scene matching and inertial navigation system information
摘要
Abstract
Aided by elevation information provided by height sensor, SAR (synthetic aperture radar) platform geo-location was realized by combining the high-precision image matching technology and the INS (inertial navigation system) drift correction method.According to the fact that the platform is on the centerline of SAR image at the middle imaging time, some points on the centerline of a single image were equably selected to conduct the high precision matching with the optical reference image.The projection position of SAR platform on the horizontal plane was calculated and the spatial position was positioned by making use of the elevation information.By use of the position results of sequence images, the drifting parameters of INS were estimated and then the outputting position data were corrected to achieve the high-accuracy platform geo-location.The impacts of different errors on location precision were analyzed and the precision estimation formulas were derived.Both simulation and real data test results show high precision and practical value for engineering of the proposed method.关键词
合成孔径雷达/平台定位/景象匹配/惯导漂移/误差传递Key words
synthetic aperture radar/platform geo-location/scene matching/inertial sensor drift/error propagation分类
信息技术与安全科学引用本文复制引用
陈圣义,刘晓春,雷志辉,于起峰,崔文..结合景象匹配与惯导信息的SAR平台定位方法[J].国防科技大学学报,2017,39(4):105-109,5.基金项目
国家重点基础研究发展计划资助项目(2013CB733100) （2013CB733100）
