輻射式仿真中脈沖雷達(dá)ISAR成像等效模擬方法

劉曉斌; 劉進(jìn); 劉光軍; 趙鋒; 王國(guó)玉

doi:10.11999/JEIT170931

輻射式仿真中脈沖雷達(dá)ISAR成像等效模擬方法

doi: 10.11999/JEIT170931 cstr: 32379.14.JEIT170931

^①(國(guó)防科技大學(xué)電子信息系統(tǒng)復(fù)雜電磁環(huán)境效應(yīng)國(guó)家重點(diǎn)實(shí)驗(yàn)室長(zhǎng)沙 410073) ^②(軍委裝備發(fā)展部裝備信息管理中心北京 100034)

基金項(xiàng)目:

國(guó)家自然科學(xué)基金(61101180, 61401491, 61490692)

詳細(xì)信息

作者簡(jiǎn)介:
劉曉斌：男，1990年生，博士生，研究方向?yàn)槔走_(dá)信號(hào)處理、雷達(dá)系統(tǒng)仿真技術(shù). 劉進(jìn)：男，1981年生，講師，研究方向?yàn)槔走_(dá)極化信息處理、微動(dòng)目標(biāo)特征提取與識(shí)別、電子信息系統(tǒng)建模與仿真.

中圖分類號(hào): TN959.1
計(jì)量
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2017-10-09
- 修回日期: 2018-03-21
- 刊出日期: 2018-07-19

Equivalent Simulation Method for Pulse Radar ISAR Imaging in Radio Frequency Simulation

LIU Xiaobin^① LIU Jin^① LIU Guangjun^② ZHAO Feng^① WANG Guoyu^①

Funds:

The National Natural Science Foundation of China (61101180, 61401491, 61490692)

摘要

摘要: 脈沖雷達(dá)信號(hào)廣泛用于逆合成孔徑雷達(dá)(ISAR)成像。在輻射式仿真中采用脈沖雷達(dá)信號(hào)進(jìn)行ISAR成像時(shí)，由于脈寬對(duì)應(yīng)的傳播距離遠(yuǎn)大于微波暗室的空間長(zhǎng)度，脈沖回波會(huì)在發(fā)射信號(hào)未被完全輻射之前返回接收機(jī)，使得收發(fā)信號(hào)相互耦合，難以得到ISAR圖像。該文提出基于間歇收發(fā)的脈沖雷達(dá)ISAR成像等效模擬方法，通過將脈沖信號(hào)分段發(fā)射、分段接收，得到分段稀疏的目標(biāo)回波。然后，結(jié)合壓縮感知與間歇收發(fā)回波，重構(gòu)得到ISAR圖像。根據(jù)等效模擬的實(shí)現(xiàn)流程，對(duì)仿真與實(shí)測(cè)數(shù)據(jù)進(jìn)行分析，結(jié)果表明，該等效模擬方法所得ISAR圖像與完整脈沖回波所得圖像基本一致，從而驗(yàn)證了等效模擬方法的有效性。
- 脈沖雷達(dá) /
- ISAR成像 /
- 壓縮感知 /
- 間歇收發(fā)
Abstract: Pulse radar signal is widely used in Inverse Synthetic Aperture Radar (ISAR) imaging. However, because the propagation distance obtained by the pulse width is larger than the size of anechoic chamber, target echo returns before the pulse signal is fully transmitted. As a result, the transmitted and reflected signals are coupled and difficult to be separated for ISAR imaging in Radio Frequency Simulation (RFS). To solve this problem, the equivalent simulation method is proposed for pulse radar ISAR imaging based on Interrupted Transmitting and Receiving (ITR). As the ITR echo is piecewise sparse in time domain, the ISAR image can be reconstructed based on Compressive Sensing (CS). Simulation and real data demonstrate that the ISAR image obtained by the proposed method is consistent with that obtained by the complete pulse radar signal. Therefore, the proposed method is effective for ISAR imaging in RFS.
- Pulse radar、Inverse Synthetic Aperture Radar (ISAR) imaging、Compressive Sensing (CS)、Interrupted Transmitting and Receiving (ITR) /

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參考文獻(xiàn)(18)

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