一種動(dòng)態(tài)調(diào)制濾波器組高效結(jié)構(gòu)設(shè)計(jì)
本文選題:動(dòng)態(tài)調(diào)制濾波器組 + 信號(hào)重構(gòu); 參考:《現(xiàn)代電子技術(shù)》2017年15期
【摘要】:在電子偵察領(lǐng)域中,由于脈沖壓縮雷達(dá)信號(hào)帶寬越來(lái)越寬,這就要求電子偵察接收機(jī)也應(yīng)具有較大的瞬時(shí)帶寬,然而較大的瞬時(shí)帶寬會(huì)導(dǎo)致接收機(jī)靈敏度降低。針對(duì)該問題,提出一種動(dòng)態(tài)調(diào)制濾波器組高效結(jié)構(gòu)設(shè)計(jì)方法。通過(guò)對(duì)信號(hào)精確重構(gòu)條件的分析,采用迭代算法設(shè)計(jì)動(dòng)態(tài)調(diào)制濾波器組的原型低通濾波器,并構(gòu)造出一種動(dòng)態(tài)調(diào)制濾波器組高效結(jié)構(gòu),計(jì)算機(jī)仿真結(jié)果驗(yàn)證了該動(dòng)態(tài)調(diào)制濾波器組高效結(jié)構(gòu)可近似精確重構(gòu)原始信號(hào)。該高效結(jié)構(gòu)在降低計(jì)算量的同時(shí),提高了接收機(jī)的靈敏度。
[Abstract]:In the field of electronic reconnaissance, because the bandwidth of pulse compression radar signal is becoming wider and wider, it is required that the electronic reconnaissance receiver should also have a larger instantaneous bandwidth. However, the larger instantaneous bandwidth will lead to the decrease of receiver sensitivity. To solve this problem, an efficient structure design method for dynamic modulation filter banks is proposed. By analyzing the condition of accurate signal reconstruction, the prototype low-pass filter of dynamic modulation filter bank is designed by iterative algorithm, and an efficient structure of dynamic modulation filter bank is constructed. The computer simulation results show that the efficient structure of the dynamic modulation filter bank can reconstruct the original signal approximately and accurately. The high efficiency structure not only reduces the computational complexity, but also improves the sensitivity of the receiver.
【作者單位】: 海軍航空工程學(xué)院青島校區(qū);哈爾濱工程大學(xué)信息與通信工程學(xué)院;中國(guó)人民解放軍92956部隊(duì);
【基金】:國(guó)家自然科學(xué)基金(61301200) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(HEUCF150808)
【分類號(hào)】:TN713;TN971
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