基于双天线单元的单站无源定位技术

基于双天线单元的单站无源定位技术

内容简介：传统相位差变化率单站无源定位技术是以方位和相位差变化率为观测量，建立观测方程，通过定位滤波算法递推计算出目标位置，由于测向系统受接收机通道幅相不一致性、平台自身姿态误差影响，较难实现高精度测向，从而影响定位精度和收敛时间，由于方位和相位差变化率参数分别通过独立天线阵测量得到，提出去掉测向天线阵，利用2个天线单元提取相位差变化率，仅利用相位差变化率为观测量，实现目标位置估计。该定位算法可有效减少系统硬件，简化定位运算过程，提高定位运算速度。

Abstract：T raditional single station passive location algorithm based on phase difference rate of change uses the direction and phase-difference rate of change as the observation quantity to estab-lish observation equation ,and calculates the target position by means of location filtering algorithm recursion .Due to the effects of receiver channel amplitude/phase errors and platform attitude error of direction finding system ,it is difficult to realize high-accuracy direction finding ,w hich will effect the localization precision and convergence speed .Because the direction and phase-difference rate of change parameters are got through independent antenna array measurement ,this paper brings for-ward to get rid of direction finding antenna array ,uses two antenna units to extract phase-differ-ence rate of change ,and estimate the target location only by taking phase difference rate of change as the observation quantity .The location algorithm can reduce the number of system hardware effi-ciently and simplify the location operation course as well as improve the location operation speed .

作者：窦修全, 国辛纯,

关键词：无轨迹卡尔曼滤波, 测向, 相位差变化率, 单站无源定位,