基于方向信息约束的遥感平台强跟踪定位算法  

Strong Tracking Positioning Algorithm Constrained with Direction Information for Remote Sensing Platform

作　　者：陈跃[1] 申法迎 徐卫明[1] 王春瑞[3] 

机构地区：[1]海军大连舰艇学院海测工程系 [2]91464部队 [3]92292部队

出　　处：《海洋测绘》2010年第1期18-21,共4页Hydrographic Surveying and Charting

摘　　要：为了提高机载遥感平台在应对气流抖动和外界强干扰时的定位性能,在加速度自适应截断正态分布的基础上,通过Lagrange乘子法将速度方向信息约束到强跟踪滤波中,得到了基于方向信息约束的强跟踪定位算法。仿真表明:该算法通过在线控制使输出残差强制近似正交,充分利用了方向约束信息。与一般的强跟踪算法相比较,在提高定位精度的同时可及时响应空中机动,较好地解决了机载遥感平台在强机动干扰条件下的跟踪定位问题。As to remote sensing （RS） platform, the performance of its positioning affected by atmosphere dithering and external jamming is improved through using strong tracking positioning algorithm constrained with direction information. Based on adaptive truncated normal distribution of acceleration, the novel algorithm combines conventional strong tracking filter with velocity-direction information by Lagrange multipliers. Simulations show that compared with STF, the proposed algorithm may quickly respond to maneuvering, while enhancing the positioning precision by keeping the approximate orthogonality of output residual errors as well as making use of velocity-direction information, and successfully solve the positioning problem of RS platform in interference environment.

关 键 词：定位 遥感平台 方向信息约束 强跟踪滤波 自适应截断正态分布 

分 类 号：P236[天文地球—摄影测量与遥感]