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引用本文：

李望西,黄长强,王勇,等.一种利用相位差变化率的机载单站无源定位方法[J].电讯技术，2012，52（1）： - . [点击复制]
LI Wang-xi,HUANG Chang-qiang,WANG Yon,et al.An airborne single observer passive location using phase difference rate-of-change[J].，2012，52（1）： - . [点击复制]

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一种利用相位差变化率的机载单站无源定位方法
李望西,黄长强,王勇,王治军
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(空军工程大学工程学院，西安 710038;解放军95739部队装备部，云南红河 661 100)

摘要:

利用空频域信息的无源定位对角速度测量要求较高，分析相位差变化率模型可知相位差变化率对角速度具有明显的放大作用，将其应用于机载单站无源定位，建立新的无源测距模型并进行误差分析。仿真实验表明：该方法减小了参数测量难度，定位误差主要受相位差变化率和频率变化率影响，并随载机和目标相对速度的增大而减小，与原方法相比具有更好的定位精度。

关键词: 机载单站无源定位测距误差定位精度几何分布相位差变化率角速度

DOI：

基金项目:军内重点项目（KJ2010146）;空军工程大学研究生创新计划（DX 2010108）

An airborne single observer passive location using phase difference rate-of-change

LI Wang-xi,HUANG Chang-qiang,WANG Yon,WANG Zhi-jun

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Abstract:

The passive location by using spatialfrequency domain information mak es high demand for measurement precision of angular velocity. Analysis of phase difference rateofchange model indicates that phase difference rateof cha nge can obviously magnify angular velocity. This characteristic is applied to airborne single observer passive location,and a new passive location m odel is built and error analysis is made. The simulation shows that this method reduces the difficulties of parameter measurement. The ranging error is mainly affected by the measurement error of phase difference rateofchange and Doppler frequency rateofchange, and it reduces with the increase of relative velocity between ob server fighter and target. Compared with former method, it has higher passive l ocation precision.

Key words: airborne single observer pa ssive location ranging error geometrical dilution of precision phase differenc e rate of change angular velocity