| P波段SAR射频干扰信号分析及抑制方法研究 |
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| 引用本文： | 丁斌,梁兴东,向茂生.P波段SAR射频干扰信号分析及抑制方法研究[J].宇航学报,2012,33(6):788-795. |
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| 作者姓名： | 丁斌 梁兴东 向茂生 |
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| 作者单位： | 1. 中国科学院电子学研究所,北京100190;中国科学院研究生院,北京100049
2. 中国科学院电子学研究所,北京,100190 |
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| 基金项目： | 国家“863计划”，国家“973”项目 |
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| 摘 要： | 分析了实测P波段SAR静默接收数据,研究了模拟电视信号的频谱特性。针对P波段SAR回波中的模拟电视干扰信号,提出了一种新的干扰抑制方法。通过在时域拼接多个脉冲的回波数据增加模拟电视信号的观测时间以提高频率分辨率,进而在距离频域对其准确识别。根据模拟电视信号的频谱特征,在距离频域构造滤波器组滤除模拟电视信号的离散谱线,保留了谱线间SAR回波信号的频谱分量。实际回波数据的成像处理结果验证了方法的有效性。
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| 关 键 词： | P波段 合成孔径雷达 干扰抑制 模拟电视信号 射频干扰信号 |
Study on Radio Frequency Interference Signal Analysis and Suppression in P Band SAR |
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| DING Bin
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LIANG Xing-dong
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XIANG Mao-sheng.Study on Radio Frequency Interference Signal Analysis and Suppression in P Band SAR[J].Journal of Astronautics,2012,33(6):788-795. |
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| Authors: | DING Bin LIANG Xing-dong XIANG Mao-sheng |
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| Institution: | 1(1.Institute of Electronics,Chinese Academy of Sciences,Beijing 100190,China; 2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Both P band SAR received silent data and spectrum characteristics of analog television signal are analyzed.In order to suppress analog television signals in P band SAR echoes,a novel interference suppression algorithm is proposed.By splicing multi-pulse SAR echoes in time domain,high frequency resolution of analog television signal can be obtained.Therefore the analog television signal can be identified accurately.By designing filter bank in range-frequency domain according to spectrum characteristics of analog television signals,the discrete spectrum lines of analog television signals are removed and the spectrum of SAR echoes between these discrete spectrum lines are saved.Finally,the proposed algorithm is verified by processing real P band SAR data. |
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| Keywords: | P band SAR Interference suppression Analog television signal Radio frequency interference signal |
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