基于收-发联合优化的认知雷达序贯信号检测
发布时间：2019-06-25 00:22
【摘要】：在扩展目标条件假设下,提出了一种联合优化发射端和接收端资源配置的认知雷达序贯信号检测方法。该方法在假设检验的基础上,根据系统之前时刻获得的目标先验信息在发射端进行自适应波形设计,在接收端进行自适应检测门限值调整,以提高系统的检测性能。理论分析和仿真实验表明:通过收-发联合优化处理后,系统的估计性能和检测性能都得到明显提高。同时,随着循环次数的增加,目标冲激响应的估计精度越来越高,使得发射波形也越来越逼近最优波形,估计检测概率和虚警概率也越来越逼近各自的真实值,从而在提高系统性能的同时也保证了决策的可靠性。
[Abstract]:Under the assumption of extended target condition, a cognitive radar sequential signal detection method is proposed, which can jointly optimize the resource allocation of transmitter and receiver. On the basis of hypothesis test, the adaptive waveform design is carried out at the transmitter according to the prior information of the target obtained at the previous time of the system, and the adaptive detection threshold value is adjusted at the receiving end in order to improve the detection performance of the system. The theoretical analysis and simulation results show that the estimation performance and detection performance of the system are improved obviously after receiving and sending joint optimization. At the same time, with the increase of the number of cycles, the estimation accuracy of the impulse response of the target is higher and higher, which makes the transmission waveform more and more close to the optimal waveform, and the estimation detection probability and false alarm probability are also closer to their respective real values, which not only improves the performance of the system, but also ensures the reliability of the decision.
【作者单位】： 电子工程学院305教研室;
【分类号】：TN957.51
[Abstract]:Under the assumption of extended target condition, a cognitive radar sequential signal detection method is proposed, which can jointly optimize the resource allocation of transmitter and receiver. On the basis of hypothesis test, the adaptive waveform design is carried out at the transmitter according to the prior information of the target obtained at the previous time of the system, and the adaptive detection threshold value is adjusted at the receiving end in order to improve the detection performance of the system. The theoretical analysis and simulation results show that the estimation performance and detection performance of the system are improved obviously after receiving and sending joint optimization. At the same time, with the increase of the number of cycles, the estimation accuracy of the impulse response of the target is higher and higher, which makes the transmission waveform more and more close to the optimal waveform, and the estimation detection probability and false alarm probability are also closer to their respective real values, which not only improves the performance of the system, but also ensures the reliability of the decision.
【作者单位】： 电子工程学院305教研室;
【分类号】：TN957.51
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