距离-速度同步欺骗干扰下的机动目标跟踪算法

研究了距离-速度同步拖引欺骗干扰下的机动目标跟踪问题。根据数字射频存储器及直接数字频率合成器产生的距离-速度同步拖引干扰原理,建立了距离-速度同步拖引干扰下的机动目标回波信号模型,利用接收机自动增益控制电压和目标个数的突变信息对信号进行欺骗干扰判决,当判断为距离-速度同步欺骗干扰时,采用正交匹配追踪方法识别出真实信号,最后利用扩展卡尔曼滤波方法对目标进行跟踪。仿真验证了该方法与魏格纳变换和魏格纳-霍夫变换相比具有较高的识别性能,并在机动条件下具有良好的跟踪效果。

Research on tracking of maneuvering targets in simultaneous range and velocity jamming

The tracking of maneuvering targets, simultaneous range and velocity jamming is studied. According to the principle of a modern deceptive jammer, which can generate a simultaneous range gate pull-off and velocity gate pull-off jamming signal based on digital radio frequency memory and direct digital frequency synthesizer architectures, the model of maneuvering target echo is established, the judgment is realized by the saltation of the automatic gain control and the number of targets, when the jamming is determined, the method of orthogonal matching pursuit is used to estimate the Doppler parameter of the true target. Finally, the extended Kalmanfilter is used for the tracking. Simulation results verify the effectiveness of this recognition algorithm which has better result than Wigner Ville transformation and Wigner-Ville Hough transformation, and famous results are obtained in maneuvering conditions.