基于信号重构的雷达与雷达对抗侦察一体化接收技术

针对雷达接收机和雷达对抗侦察接收机存在的不同特征,提出了基于信号重构的雷达与雷达对抗侦察一体化接收技术。首先利用复指数调制滤波器组将中频带宽分解为若干子带,再通过频谱感知和信号重构实现非均匀动态信道化,最后利用非均匀动态信道化技术分别接收雷达回波信号和辐射源直射信号。为了满足一体化接收机的瞬时动态范围、灵敏度、监视带宽以及频率分辨率等性能指标的要求,本文引入一种大M值高阻带衰减原型滤波器设计方法。理论分析和仿真试验表明了该一体化接收技术的有效性。

An Integrated Receiving Technique of Radar and Radar Countermeasure Reconnaissance Based on Signal Reconstruction

In this paper,a receiving technique integrated radar and radar with countermeasure reconnaissance based on signal reconstruction is proposed to resolve the problem of different characteristics between radar and radar countermeasure reconnaissance receiver.First,the intermediate frequency bandwidth is split to several sub-bands by using complex-exponential modulated filter banks.Then a nonuniform dynamic channelization is realized by using the technique for spectrum sensing and signal reconstruction.Finally,the echo of radar and radiation of emitter can be received respectively by using the technique of nonuniform dynamic channelization.A method for designing a high-complexity prototype filter is introduced to satisfy the requirments of the integrated receiver such as instantaneous dynamic range,sensitivity,surveillance bandwidth and frequency resolution.Theoretical analysis and computer simulation have illustrated the validity of this integrated receiving technique.