目标回波信号的时频域特性是由目标的散射特性与运动特性决定的,能形成假航迹的欺骗干扰信号的时频域特性是由干扰机的调制特性决定的,干扰机难以完全仿真目标的散射特性与运动特性,二者之间在时频域的差异是假航迹干扰信号识别的基础。 文中将航迹特征与信号特征联合,建立了多普勒频率与目标航迹信息、正交相参视频回波信号的关系模型,通过对两种方法得到的多普勒频率进行一致性检验,完成假航迹干扰识别,并通过仿真实验验证了所提方法的正确性。

The time and frequency domain characteristics of target echo signal are determined by the scattering characteristics and motion characteristics of target. The time and frequency domain characteristics of deception jamming signal which can form false track are determined by the modulation characteristics of jammer. It is difficult for jammer to fully simulate the scattering characteristics and motion characteristics of target, and the difference between them in time and frequency domain is the basis of false track jamming signal recognition. The relationship model between Doppler frequency and target track information, orthogonal coherent video echo signal is established by combining track feature and signal feature in this paper. False track jamming recognition is completed through consistency test of Doppler frequency obtained by above two methods. The correctness of the proposed method is verified by simulation experiments.

TN972