LBI测向定位系统的多标校源校正算法

采用长基线干涉仪测向定位的系统,对干涉仪基线矢量的测量精度要求非常高,而通常的测姿设备在增加载荷系统复杂度的同时并不能直接提供干涉仪指向信息。针对这一问题,提出共用定位系统测量方向余弦角的相位差测量通道,利用同时测量的两个(以上)已知校正源的相位差,实时解算、提供干涉仪的空间指向,并给出了校正干涉仪指向的性能估计方法。仿真表明,该算法能够有效获得干涉仪的空间指向。

Multi-source calibration for LBI direction finding and location system

In the LBI(long baseline interferometer) direction finding and location system, the precision of the baseline direction must be very high.Usually a gauging instrument,such as INS,is used to measure the attitudes of the board system.It not only adds weight and complexity,but also can not directly accommodate the baseline direction.According to this,a calibration method using two(or more) sources is proposed.This method utilizes the measurement channels of the DF system to measure the phase differences of each calibration sources,and thus solve the baseline direction.The performance of this method is analyzed.The simulation results show that,this method is effective to obtain precise direction of LBI baseline.