仅用长基线干涉仪相位差的运动单站定位法

A Single Moving Observer Passive Localization Method Using the Phase Difference of a Long Baseline Interferometer only

针对传统单站无源定位测角系统中多通道干涉仪的复杂性，提出了一种仅用长基线干涉仪（LBI）模糊相位差的运动单站无源定位方法。针对定位问题的高度非线性，文章提出了一种多假设Taylor级数（MHTS）定位计算方法，并分析了定位误差的克拉美一罗下限（CRLB）。仿真结果表明通过观测器机动，可实现快速无模糊定位；基于模糊相位差的多假设Taylor级数定位算法性能可接近CRLB；干涉仪平行于机身安装，航迹两侧区域具有较高定位精度。

Due to the complexity structure of multi-channel interferometers, a novel passive localization method based on a single moving observer using ambiguous phase difference of a long baseline interferometer （LBI） is proposed. To solve the high nonlinearity of this problem, a multiple hypothesis Taylor series （MHTS） localization method is advanced. The Cramer-Rao Lower Bound （CRLB） of this method is also analyzed. Simulation results show that observer maneuver should be taken to achieve fast unambiguous results; the performance of the MHTS method can approach to CRLB; the interferometer had better be parallel to flight body to make flank area＇ s localization precision better.