【摘要】：在擴(kuò)展目標(biāo)條件假設(shè)下,提出了一種聯(lián)合優(yōu)化發(fā)射端和接收端資源配置的認(rèn)知雷達(dá)序貫信號(hào)檢測(cè)方法。該方法在假設(shè)檢驗(yàn)的基礎(chǔ)上,根據(jù)系統(tǒng)之前時(shí)刻獲得的目標(biāo)先驗(yàn)信息在發(fā)射端進(jìn)行自適應(yīng)波形設(shè)計(jì),在接收端進(jìn)行自適應(yīng)檢測(cè)門限值調(diào)整,以提高系統(tǒng)的檢測(cè)性能。理論分析和仿真實(shí)驗(yàn)表明:通過收-發(fā)聯(lián)合優(yōu)化處理后,系統(tǒng)的估計(jì)性能和檢測(cè)性能都得到明顯提高。同時(shí),隨著循環(huán)次數(shù)的增加,目標(biāo)沖激響應(yīng)的估計(jì)精度越來(lái)越高,使得發(fā)射波形也越來(lái)越逼近最優(yōu)波形,估計(jì)檢測(cè)概率和虛警概率也越來(lái)越逼近各自的真實(shí)值,從而在提高系統(tǒng)性能的同時(shí)也保證了決策的可靠性。
[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.
【作者單位】： 電子工程學(xué)院305教研室;
【分類號(hào)】：TN957.51

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