| 基于机载ATI-SAR相位中心误差分析的天线系统结构设计 |
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| 引用本文： | 王欣,洪峻. 基于机载ATI-SAR相位中心误差分析的天线系统结构设计[J]. 中国科学院大学学报, 2013, 30(2): 228-232. DOI: 10.7523/j.issn.1002-1175.2013.02.013 |
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| 作者姓名： | 王欣 洪峻 |
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| 作者单位： | 1. 中国科学院空间信息处理与应用系统技术重点实验室, 北京 100190;2. 中国科学院微波成像技术国家重点实验室, 北京 100190;3. 中国科学院研究生院, 北京 100190;4. 中国科学院电子学研究所, 北京 100190 |
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| 基金项目： | Supported by NSFC(60890070) |
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| 摘 要： | 顺轨干涉合成孔径雷达(ATI-SAR)可检测地面动目标并测量其速度.相位中心误差是机载ATI-SAR的重要误差源之一.除需外定标处理固定偏差外,还需在天线结构设计时以一定的刚性强度抑制慢变误差.分析了由天线机械形变导致的相位中心慢变误差的变化规律,并根据机载ATI-SAR测速精度的要求对天线系统结构设计提出需求,为合理的天线结构设计提供理论基础。
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| 关 键 词： | 机载ATI-SAR 相位中心误差 机械变化 天线系统结构设计 |
| 收稿时间： | 2012-03-06 |
| 修稿时间： | 2012-04-19 |
Antenna structural design based on phase center error analysis of airborne ATI-SAR |
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| WANG Xin,HONG Jun. Antenna structural design based on phase center error analysis of airborne ATI-SAR[J]. , 2013, 30(2): 228-232. DOI: 10.7523/j.issn.1002-1175.2013.02.013 |
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| Authors: | WANG Xin HONG Jun |
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| Affiliation: | 1. Key Laboratory of Spatial Information Processing and Application System Technology, Chinese Academy of Sciences, Beijing 100190, China;2. China National Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;3. Graduate University, Chinese Academy of Sciences, Beijing 100190, China;4. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | Along-track interferometric synthetic aperture radar (ATI-SAR) detects ground moving objects and measures their velocities. Phase center error is a major error source of ATI-SAR. Not only does the constant offset need external calibration, but also the rigidity of antennas should prohibit the drifting errors. We analyzed the drifting errors caused by antenna's mechanical deformation and proposed requirements for structural design of antenna to meet the velocity measuring requirements, providing theoretical foundation for airborne ATI-SAR antenna structure design. |
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| Keywords: | airborne ATI-SAR phase center error mechanical deformation antenna system structural design |
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