| 机载ATI-SAR基线定标方法研究 |
| |
| 引用本文： | 王欣,洪峻,明峰,胡继伟.机载ATI-SAR基线定标方法研究[J].国外电子测量技术,2012,31(5):23-27,40. |
| |
| 作者姓名： | 王欣 洪峻 明峰 胡继伟 |
| |
| 作者单位： | 1. 空间信息处理与应用系统技术重点实验室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. 微波成像技术国家重点实验室中国科学院电子学研究所 北京 100190 |
| |
| 基金项目： | 国家自然科学基金重大项目 |
| |
| 摘 要： | 顺轨干涉合成孔径雷达技术(ATI-SAR)是一种适用于运动目标检测(GMTI)的干涉合成孔径雷达(SAR)技术。基线误差是顺轨干涉雷达系统的主要误差,直接影响地面运动目标测速的准确性以及定位精度。本文基于对ATI基线误差源特性的分析,针对2个主要基线误差源——姿态误差和相位中心误差进行定标方法的探讨和研究。通过仿真实验可以看出,文中提供的定标方法对误差的处理准确、有效,因此这些定标方法为进一步研究并制定机载ATI-SAR定标方案奠定了基础。
|
| 关 键 词： | ATI-SAR 基线定标 姿态误差 相位中心误差 |
Study on calibration method of baseline of airborne ATI-SAR |
| |
| Wang Xin
,
Hong Jun
,
Ming Feng
,
Hu Jiwei.Study on calibration method of baseline of airborne ATI-SAR[J].Foreign Electronic Measurement Technology,2012,31(5):23-27,40. |
| |
| Authors: | Wang Xin Hong Jun Ming Feng Hu Jiwei |
| |
| Affiliation: | 1.Key Laboratory of Geo-spatial Information Processing and Application System Technology,Institute of Electronics,Chinese Academy of Sciences,Beijing 100190,China;2.National Key Laboratory of Microwave Imaging Technology,Institute of Electronics,Chinese Academy of Sciences,Beijing 100190,China;3.Graduate School of Chinese Academy of Sciences,Beijing 100049,China) |
| |
| Abstract: | The technique of along-track interferometric synthetic aperture radar （ATI-SAR） can be applied to ground moving targets indication （GMTI）.The time baseline error is an influential error of along-track interferometric SAR system and can directly affect velocity measurement and localization precision.In this paper,two main error resources of time baseline- namely biases of attitudes and phase center offsets- are studied and discussed according to the mathematical characteristic of the error resources of ATI time baseline.From the results of the simulation experiments,it is concluded that all the calibration techniques proposed in this paper are precise and effective,which is the basis of future research work such as studying the calibration scheme. |
| |
| Keywords: | ATI-SAR baseline calibration bias of attitudes phase center offset |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
