四站混合定位系统的平面测量误差

Plane Measurement Error of 4-Station Combined Positioning System

基于最小二乘和误差估计理论,应用数值计算的方法具体分析了一个按形布站、且将时差和径向距离测量信息相融合的四站定位系统,通过与仅基于时差测量技术的定位系统相比较证明,多站混合定位测量系统具有测量误差低、无空间观测盲区等优点。所给出的结果不仅能应用于对非合作目标探测的有源/无源综合定位系统,而且还能应用于对可合作目标定位的多站定位系统的设计。

Based on the least square method and error estimation theory, the Y-shaped 4-station positioning system, combining the measured data of time difference with radial distance, was particularly studied by numerical computation method. The analysis proves that multi-station combined positioning system has lower measurement error and hasn＇ t observation blind zone compared with TDOA positioning system. The obtained result can be used not only to integrated system of active and passive positioning for the detection of non-cooperation target, but also to the design of multi-station positioning system for cooperation target positioning in order to increase the measurement accuracy.