分布式干扰下组网雷达目标检测与跟踪技术

针对分布式干扰下组网雷达目标检测与跟踪，提出一种基于分布式干扰下雷达量测模型的跟踪技术。该跟踪技术包括分布式干扰下量测模型和组网雷达序贯滤波跟踪两部分，分布式干扰下量测模型根据雷达采取抗干扰措施前后的接收机输入端的信干比分别计算检测概率，进而模拟传感器在分布式干扰下对目标的检测情况。在组网雷达序贯滤波中，首先对分布式干扰下各雷达的量测数据进行串行合并和点迹合成，然后采用基于交互多模型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分布式干扰下因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。仿真结果证明了该技术的可行性和有效性。

Detection and tracking technique for radar network in the presence of distributed jamming

In the presence of distributed jamming,a detection and tracking technique is proposed for the radar network,which is based on a new radar observation equation.The technique involves two steps: radar observation equation in the presence of distributed jamming and radar network sequence filtering.The observation equation calculates the detection probability based on the signal-to-jamming ratio of the radar receiver and then simulates the sensor’s targets detection condition in the presence of distributed jamming.The radar network sequence filtering algorithm serially merges the measurement data from the radar network and compresses them in the presence of distributed jamming,and then tracks the compressed data using sequence filtering based on the interacting multiple model.The detection technique can simulate the transient vanishing phenomenon of observed targets due to a low detection probability.The tracking technique can enhance the continuity and stability of the radar network target tracking.Simulation results verify the feasibility and validity of the proposed technique.