| 一种新的MIMOSAR/MTI空时等效重构方法 |
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| 引用本文： | 孙龙,江凯,邬伯才,葛家龙. 一种新的MIMOSAR/MTI空时等效重构方法[J]. 雷达科学与技术, 2011, 9(2): 120-124 |
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| 作者姓名： | 孙龙 江凯 邬伯才 葛家龙 |
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| 作者单位： | 中国电子科技集团公司第三十八研究所,安徽,合肥,230088 |
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| 摘 要： | 多输入多输出合成孔径雷达(MI MO SAR)是一种新体制的成像雷达。针对高空高速平台的SAR系统方位向口径(或方位向分辨率)和作用距离的设计矛盾,采用MI MO体制有效地解决了PRF设计的问题。并针对多通道MTI模式提出了一种新的MI MO SAR空时等效重构方法,使得系统有效地兼顾了SAR模式和MTI模式。与常规的SAR/MTI系统相比,MI MO SAR/MTI系统在SAR模式下可以实现远距离高分辨率宽观测带成像;在MTI模式下,可以实现远距离运动目标探测,且具有高的运动目标检测性能和定位精度。
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| 关 键 词： | 多输入多输出(MIMO) 空时等效重构 合成孔径雷达 动目标检测 |
A Novel Space-Time Equivalent Reconstruction Method for MIMO SAR/MTI System |
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| SUN Long,JIANG Kai,WU Bo-cai,GE Jia-long. A Novel Space-Time Equivalent Reconstruction Method for MIMO SAR/MTI System[J]. Radar Science and Technology, 2011, 9(2): 120-124 |
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| Authors: | SUN Long JIANG Kai WU Bo-cai GE Jia-long |
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| Affiliation: | SUN Long,JIANG Kai,WU Bo-cai,GE Jia-long(No.38 Research Institute of CETC,Hefei 230088,China) |
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| Abstract: | In this paper,the contradiction between azimuth antenna size(or azimuth resolution) and radar detection range in near space high speed platform SAR/MTI system is analyzed.The technique of multiple-input multiple-output,which can be used to resolve the contradiction,is used in SAR imaging mode.Subsequently,a novel space-time equivalent reconstruction method,which can get a high performance of detection and location in MTI mode,is presented. |
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| Keywords: | multiple-input multiple-output(MIMO) space-time equivalent reconstruction synthetic aperture radar(SAR) moving target indication(MTI) |
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