| 机载双通道SAR/DPCA误差分析 |
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| 引用本文： | 杨贤林,潘志刚,沈汀.机载双通道SAR/DPCA误差分析[J].电子与信息学报,2007,29(3):536-539. |
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| 作者姓名： | 杨贤林 潘志刚 沈汀 |
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| 作者单位： | 中国科学院电子学研究所,北京,100080 |
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| 摘 要： | SAR/DPCA技术是一种简单实用的多通道SAR运动目标检测方法，实际应用中会受到各种误差因素的限制，其中影响算法性能最大的两类误差是载机速度误差和通道失衡。该文详细地分析了这两类误差因素对SAR/DPCA算法性能的影响，建立了误差分析模型，针对实际参数给出了误差分析的结果，并确定了一定误差条件下的系统可检测速度范围、盲速和最小可检测速度。
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| 关 键 词： | SAR/DPCA 误差分析 盲速 最小可检测速度 |
| 文章编号： | 1009-5896（2007）03-536-04 |
| 收稿时间： | 2005-06-10 |
| 修稿时间： | 2006-07-31 |
Error Analysis for Airborne Dual-Channel SAR/DPCA System |
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| Yang Xian-lin,Pan Zhi-gang,Shen Ting.Error Analysis for Airborne Dual-Channel SAR/DPCA System[J].Journal of Electronics & Information Technology,2007,29(3):536-539. |
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| Authors: | Yang Xian-lin Pan Zhi-gang Shen Ting |
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| Affiliation: | The Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | SAR/DPCA(Displaced Phase Center Antenna) technique is a simple and practical method of multi-channel SAR/GMTI(Graund Moving Target Indication), but in practice it is limited by some kinds of errors, in which antenna phase center velocity error and channel mismatch are the most important errors. In this paper, the error analysis model is founded and the loss of moving target detection performance is analyzed under the circumstance of antenna phase center velocity error or channel mismatch. The error analysis results are shown on the figures and the range of detectable velocity, blind velocity and minimum detectable velocity are confirmed on the basis of actual parameters of dual-channel SAR/DPCA system. |
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| Keywords: | SAR/DPCA(Displaced Phase Center Antenna) Error analysis Blind velocity Minimum detectable |
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