一种长基线阵列地面单站无源定位方法

Passive location method to long baseline antenna array

摘要:

为解决地对空快速单站无源定位问题，提出了一种长基线阵列地面单站无源定位方法。该方法将阵列天线嵌套在三天线长基线系统中，利用目标到长基线两端的视向夹角隐含在相位差参数上的原理，由视向夹角相位差估计角度变化率，同时利用阵列天线测出目标的实际方向，最后获得目标的位置参数。该方法可以在单个脉冲实现对目标的无源定位，仿真结果验证了该方法的正确性。

Abstract:

A passive location method to long baseline antenna array is proposed. In this method, an array antenna is embedded into a long baseline system with tri-antenna firstly. According to the principle that the angle between the target and the long baseline is implied in the phase difference information, the angle changing rate can be estimated from the phase difference of the angle between the target and the long baseline. The actual direction of the target can be measured by the array antenna. The position parameters of the target are obtained thereafter. The method can be applied to locate the target by using only a single pulse. The simulation results verify the validity of the proposed method.