压制干扰下组网雷达目标检测与跟踪技术

针对压制干扰下组网雷达目标检测与跟踪，提出了一种基于压制干扰下雷达量测模型的跟踪技术。该跟踪技术包括压制干扰下量测模型和组网雷达序贯滤波跟踪两部分。压制干扰下量测模型根据雷达采取抗干扰措施前后接收机输入端的信干比分别计算检测概率，进而模拟传感器在压制干扰下对目标的检测情况。组网雷达序贯滤波中，首先对压制干扰下各雷达的量测数据进行串行合并和点迹合成，而后采用基于交互多模型(IMM)的序贯滤波方法对压缩后的数据进行跟踪。该检测与跟踪技术可模拟出雷达在压制干扰下由于检测概率下降造成的目标暂消现象，提高组网雷达跟踪航迹的连续性和稳定性。仿真结果表明了该技术的可行性和有效性。

Target Detection and Tracking Technique for Radar Network in the Presence of Suppressive Jamming

In the presence of suppressive jamming, a target detecting and tracking technique based on new radar observation equation is proposed for radar network. The technique involves two steps, radar observation equation in the presence of suppressive jamming and radar network sequential filtering and tracking. The observation equation is used to calculate the detection probability according to signal to jamming ratio (SJR) of radar receiver and sensor’s targets detection condition is simulated in the presence of suppressive jamming. The radar network sequential filtering algorithm is used to merge serially and compress the measurements from radar network in the presence of suppressive jamming, and the compressed data are tracked by using sequential filtering algorithm based on interactive multiple model (IMM). The detection technique can simulate radar’s observed target temporary vanishing phenomenon as a result of low detection probability. It can enhance continuity and stability of radar network target tracking. Simulation results show feasibility and validity of the proposed technique.