基于检测跟踪联合的雷达单帧虚警率计算仿真

针对传统雷达单帧虚警率计算存在雷达探测距离偏低、检测门限高问题,提出了基于检测跟踪联合的雷达单帧虚警率计算方法。量测波门内超过设定阈值的数据,采用跟踪算法进行关联。将跟踪结果反馈到检测中心,通过该反馈信息对波门内的检测阈值进行调整,归一化处理粒子滤波的权重,计算检测单元的相似度,求取非归一化噪声的关联矩阵概率,进而修正粒子滤波的目标状态。根据计算在波门内的虚警率积分,得到波门平均检测概率,实现基于检测跟踪联合的雷达单帧虚警率计算。为验证以上研究的有效性,进行了仿真,结果表明,上述研究获得结果是理想的,具有更高的雷达探测距离,且检测门限降低。说明本研究具有较强应用性。

Simulation of Radar Single Frame False Alarm Rate Based on Detection and Tracking Joint

Due to low detection range and high detection threshold in traditional calculation of radar single-frame false alarm rate,this article presented a method of calculating the single-frame false alarm rate based on detection and tracking combination.The data exceeding the set threshold in the wave gate were measured,and then the data were correlated by the tracking algorithm.After that,the tracking results were fed back to the detection center.Based on feedback information,the detection threshold values in the wave gate were adjusted and the weights of particle fil-ters were normalized.The similarity of detection units was calculated and the association matrix probability of non-normalized noise was obtained.The target state of particle filter was modified.By calculating the integral of false a-larm rate in wave gate,the average detection probability of wave gate was obtained.Based on detection and tracking combination,the single-frame false alarm rate of radar could be calculated.In order to verify the effectiveness,a simulation was carried out.Simulation results show that the proposed method has higher detection range and lower de-tection threshold is ideal.