摘要
利用联合战术信息分发系统(JTIDS)实现相对导航功能时,消息源自身位置存在的随机误差会在导航解算中对导航质量产生影响。针对此问题,文中推导出JTIDS相对导航环境下克拉美-罗界(CLRB)的表达式,定量的分析了源位置误差对导航解算的影响,并采用一种两步最小二乘的定位解算方法,用以消除源位置误差带来的影响。仿真结果表明,源位置误差对导航解算影响较大,而采用文中算法能够有效的抑制源位置误差的影响。
The joint tactical information distribution system（ JTIDS） achieves relative navigation function,but the random errors caused by position of message source influence the performance of navigation in navigation calculation. In view of this problem,CLRB＇s expression was deduced under the circumstance of relative navigation of JTIDS,and aquantitative analysis was made on the effect of the source location＇s errors on navigation calculation. Moreover,a two-step least-square algorithm of position determination was used so as to eliminate errors of the source location. Simulation results show that the source location＇s errors affect much on navigation calculation,therefore,the algorithm in this paper will effectively restrain the source location＇s errors.
出处
《弹箭与制导学报》
CSCD
北大核心
2015年第1期147-150,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
JTIDS
相对导航
源位置误差
JTIDS
relative navigation
source position random errors
