摘要
从时差频差联合定位方程组出发,基于牛顿迭代法求解定位结果,并从理论上分析定位误差,说明时差频差联合定位的特点。考虑到双机时差频差定位中固有的定位结果模糊和定位精度不高2个问题,提出三机联合定位,通过飞机的两两组合消除定位结果模糊,并通过数据融合提高定位精度。通过仿真验证三机定位相对于双机在解定位模糊和精度方面要优于双机定位。
The location result is estimated by Newton＇s iteration from the system of time difference and frequency difference equations.Estimating accuracy and location characteristic are analyzed in theory.Considering to the ambiguity and low accuracy of two aircraft system,the three aircraft system is discussed.The ambiguity is eliminated by any two plane combination and location accuracy is improved by data fusing.It is proved by simulation that three aircraft system is prior to two aircraft system in elimination ambiguity and accuracy.
出处
《无线电工程》
2011年第7期21-23,共3页
Radio Engineering
关键词
时差
频差
双机
三机
牛顿迭代法
time difference of arrival
frequency difference of arrival
two aircraft
three aircraft
newton＇s iteration method
