摘要
针对两个卫星利用信号到达时间差(TDOA)、到达频率差(FDOA)信息对地面已知高度固定辐射源定位容易产生模糊解的问题,提出了两种判断模糊解的方法,并在对观测参数存在误差条件下双星定位误差几何稀释(GDOP)分布进行了理论和Monte-Carlo仿真分析基础上,得到了定位误差的解析表达式。分析结果表明为了减少定位误差大的区域,双星最好同轨分布。
Aiming at the problem of ambiguous solutions when locating the fixed known altitude emitter by dual-satellites using time difference of arrival （TDOA） and frequency difference of arrival （FDOA） information, two methods of getting right solution without ambiguity are presented. Dual-satellites geo-location error is also analyzed in theoretically and by Monte-Carlo simulation when measurement has error, and the analytic statement of location error is given. The analysis shows that dual-satellites had better be in the same orbit.
出处
《航天电子对抗》
2006年第6期20-23,共4页
Aerospace Electronic Warfare
