| 采用包络检波去除SISAR直达波干扰的新方法 |
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| 引用本文： | 陈觉之,袁领峰,罗斌凤,张守宏.采用包络检波去除SISAR直达波干扰的新方法[J].海军工程大学学报,2005,17(2):23-27. |
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| 作者姓名： | 陈觉之 袁领峰 罗斌凤 张守宏 |
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| 作者单位： | 1. 海军工程大学,电子工程学院,湖北,武汉,430033
2. 西安电子科技大学,雷达信号处理国家重点实验室,陕西,西安,710071 |
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| 基金项目： | 信息产业部预研基金资助项目(57.7.2.10) |
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| 摘 要： | 为了去除直达波干扰,从强的直达波干扰背景中有效提取SISAR侧影成像的目标全息信号,提出了对接收的含有目标全息信号和强直达波的混合信号直接进行包络检波,然后通过对检波后的输出进行时域的正交分解,恢复目标的全息信号的新方法.仿真结果验证了理论分析的正确性.
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| 关 键 词： | 包络检波 阴影逆合成孔径雷达(SISAR) 直达波 目标全息信号 正交分解 |
| 文章编号： | 1009-3486(2005)02-0023-05 |
| 修稿时间： | 2004年10月11 |
A novel method to eliminate interference of direct transmitted echo in SISAR by envelope demodulation |
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| CHEN Jue-zhi,YUAN Ling-feng,LUO Bin-feng,ZHANG Shou-hong.A novel method to eliminate interference of direct transmitted echo in SISAR by envelope demodulation[J].Journal of Naval University of Engineering,2005,17(2):23-27. |
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| Authors: | CHEN Jue-zhi YUAN Ling-feng LUO Bin-feng ZHANG Shou-hong |
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| Institution: | CHEN Jue-zhi~ |
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| Abstract: | In order to eliminate the interference of direct transmitted echoand extract target radio ho-(lographic) signalused in SISAR imaging from the background of intensive direct transmitted echo effectively, a novel method is proposed, by which the mixed signal of direct transmitted echoand target radio holographic signalreceived is processed with envelopedemodulation, and thenthe target radio holographic signalis recovered by applying orthogonal decomposition to the output of demodulated signal in time domain. This method is validated by the computer simulation. |
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| Keywords: | envelopedemodulation shadow inverse aperture radar (SISAR) direct transmitted (echo target)radio holographic signal orthogonal decomposition |
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