摘要
T/R-R型双基地声纳系统采用两坐标声纳对目标定位时,同时获得三个观测量,就可以对目标进行三维定位。如利用发射站方位角信息以及接收站距离和与方位角信息观测目标实现三维定位的算法,分别研究各观测量(双站角度测量误差,时间测量误差,站址测量误差等)、系统参数(基线长度等)以及环境参数(声速波动)等因素对算法的定位精度的影响,通过数值仿真,做出各因素的误差几何分布图。仿真结果显示,系统的定位精度受双站角度测量误差的影响非常大,提高角度测量精度是提高系统定位精度的非常有效的方法。
If three measurements can be used, target can be positioned location in three - dimenional mode with two coordinate measurements in T/R - R bistatic sonar. The algorithm of three - dimensional positioning with two coordinate measurements in bistatic sonar is discussed in this paper,which uses the measurements of azimuth referred to T/R station, time delay （T/R to target and R） and the azimuth to R station. The positioning accuracy contours are drawn for evaluating the positioning performance via computer simulation. The accuracy analysis for different measurements and parameters is given respectively. The simulation results show that the positioning accuracy is influenced by azimuth error greatly. Improving azimuth accuracy can get much better positioning performance.
出处
《计算机仿真》
CSCD
2006年第2期14-17,共4页
Computer Simulation
关键词
双基地声纳
定位精度
两坐标
三维定位
Bistatic sonar
Positioning accuracy
Two coordinate
Three - dimensional positioning
