组合导航中SAR匹配位置参数传递过程  

Transmission of SAR Matching Position in Integrated Navigation System

作　　者：卜彦龙[1] 潘亮[1] 胡国昌[1] 沈林成[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073

出　　处：《国防科技大学学报》2009年第3期70-75,共6页Journal of National University of Defense Technology

基　　金：湖南省自然科学基金资助项目(07JJ3127);国防科技大学博士生创新资助项目(B070301)

摘　　要：飞行器INS/SAR组合导航中SAR匹配位置参数作为组合滤波器的输入之前需经过多个传递环节的转换。研究了从地面SAR匹配位置到载体主惯导中心位置所涉及各环节间的相互关系及诸参数在各环节中的传递过程,包括地面SAR匹配位置参数向飞行器上SAR相位中心的传递,SAR相位中心参数向辅助惯导中心的传递以及辅助惯导中心位置参数向主惯导位置中心的传递,以此为基础建立测量参数传递过程数学模型。基于传递模型惯导修正及传递误差分析实验结果与实际相符,验证了参数传递模型的正确性与可行性。There are several sub-transmission processes before matching-position parameters are transferred into combination-filter in INS/SAR integrated navigation system. In this paper these processes were studied, and the relations between them were analyzed, including the transmission of position information from ground matching centre to SAR phase centre, the transmission of position information from SAR phase centre to assistant INS centre, and the transmission of position information from assistant INS centre to master INS centre. Based on the analysis, a mathematical model of parameter-transfer was established. Modified inertial navigation parameters based on the model are reasonable, and results of transfer errors are rational, which prove the efficiency and flexibility of the model proposed.

关 键 词：INS/SAR组合导航 SAR景象匹配 辅助惯导 主惯导 参数传递 误差分析 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] V241[自动化与计算机技术—控制科学与工程]