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基于柱形拋物面天線的MIMO SAR研究

葉愷,  禹衛(wèi)東,  徐偉,  王偉

葉愷, 禹衛(wèi)東, 徐偉, 王偉. 基于柱形拋物面天線的MIMO SAR研究[J]. 電子與信息學(xué)報(bào), 2018, 40(8): 1816-1822. doi: 10.11999/JEIT171105
引用本文: 葉愷, 禹衛(wèi)東, 徐偉, 王偉. 基于柱形拋物面天線的MIMO SAR研究[J]. 電子與信息學(xué)報(bào), 2018, 40(8): 1816-1822. doi: 10.11999/JEIT171105
YE Kai, YU Weidong, XU Wei, WANG Wei. Investigation on Parabolic Cylinder Reflector Based MIMO SAR[J]. Journal of Electronics & Information Technology, 2018, 40(8): 1816-1822. doi: 10.11999/JEIT171105
Citation: YE Kai, YU Weidong, XU Wei, WANG Wei. Investigation on Parabolic Cylinder Reflector Based MIMO SAR[J]. Journal of Electronics & Information Technology, 2018, 40(8): 1816-1822. doi: 10.11999/JEIT171105

基于柱形拋物面天線的MIMO SAR研究

doi: 10.11999/JEIT171105

  • (中國科學(xué)院電子學(xué)研究所 北京 100190) ②(中國科學(xué)院大學(xué) 北京 100049)

基金項(xiàng)目: 

國家重點(diǎn)研發(fā)計(jì)劃(2017YFB0502700)，國家自然科學(xué)基金(61701479)

Investigation on Parabolic Cylinder Reflector Based MIMO SAR

  • (Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)

Funds: 

The National Key Research and Development Project (2017YFB0502700), The National Natural Science Foundation of China (61701479)

  • 摘要: 為了實(shí)現(xiàn)星載合成孔徑雷達(dá)(SAR)的高分辨率寬測繪帶成像，該文提出一種基于柱形拋物面天線的多發(fā)多收合成孔徑雷達(dá)系統(tǒng)(MIMO SAR)。根據(jù)對系統(tǒng)結(jié)構(gòu)和短偏移正交(STSO)發(fā)射波形的分析，該文給出該系統(tǒng)的具體處理方法?；谥螔佄锩嫣炀€易于在俯仰向形成高增益窄波束的優(yōu)勢，該系統(tǒng)能夠利用數(shù)字波束形成技術(shù)對不同波形回波數(shù)據(jù)進(jìn)行有效分離，從而獲取更多的方位向等效相位中心。通過方位向多通道數(shù)據(jù)重構(gòu)處理，成像場景回波數(shù)據(jù)可利用傳統(tǒng)成像算法進(jìn)行成像。仿真結(jié)果表明，該系統(tǒng)能夠確保MIMO SAR的成像質(zhì)量，并具有良好的成像性能。
    Abstract: To realize the high-resolution wide-swath mapping capability of spaceborne SAR, this paper presents a parabolic cylinder reflector based MIMO SAR system. According to the analysis of system configuration and Short-Term Shift-Orthogonal (STSO) transmitting waveforms, the specific processing method are elaborated. Taking advantage of parabolic characteristics in elevation, the narrow beams with high gain can be easily realized by the parabolic cylinder reflector. This facilitates the efficient separation of STSO transmitting waveforms by using the digital beam-forming technique, therefore, more azimuth equivalent phase centers can be obtained. After the multichannel reconstruction processing in azimuth, the echo signals from illuminated scene can be imaged by conventional imaging algorithms. The simulation results show that, the proposed system has satisfactory performance for MIMO SAR imaging.
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出版歷程
  • 收稿日期:  2017-11-24
  • 修回日期:  2018-04-13
  • 刊出日期:  2018-08-19

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