围绕被动导引头跟踪过程中目标辐射源信号丢失的问题，提出一种基于目标状态估计的抗目标信号丢失方法。

For the problem of loss of target signal during target tracking in passive seeker, a new method is presented for anti-loss of target signal based on target state estimation.

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密集信号环境下，被动雷达导引头信号处理系统中，由信号跟踪器给出的预测宽波门中难免会有异部雷达信号。

In high pulse-density environment, it's hard to avoid another radar signals from the forecasting gate given by a signal tracer in passive radar seeker signal processing system.

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研究了被动雷达单脉冲导引头主波束内存在两噪声调频干扰源时，对两辐射源进行检测并作角估计的方法。

The methods of detection and angular estimation of two sources are studied for passive radar seeker in two jamming sources scenarios.

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