A novel phase bias estimation method for multichannel HRWS SAR system in azimuth based on RDS analysis

Zhao Jianhui; Wang Kuan; Wang Ling; Guo Zhengwei; Li Ning

首页> 外文期刊>Remote sensing letters >A novel phase bias estimation method for multichannel HRWS SAR system in azimuth based on RDS analysis

【24h】

A novel phase bias estimation method for multichannel HRWS SAR system in azimuth based on RDS analysis

机译：基于RDS分析的方位角多通道HRWS SAR系统的新型偏差估计方法

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Multichannel synthetic aperture radar (SAR) systems in azimuth can realize high-resolution and wide-swath (HRWS) imaging, which has attracted intensive research interests. The azimuth ambiguities caused by non-uniform sampling can be suppressed by digital beamforming technique. However, the presence of inevitable channel errors in the multichannel SAR system deteriorates the performance of ambiguity suppression. Based on the analysis of the characteristics of the multichannel SAR echoes, it was found that phase bias among channels can cause jumping in the reconstructed Doppler spectrum (RDS). This letter presents a novel data-based phase bias estimation method for HRWS SAR system. With the assumption that the splice of echo energy inside the Doppler bandwidth is continuous, there is no jumping in the RDS. The estimation of phase biases in the multichannel HRWS SAR system can be translated into the optimization solution issue. Simulation experiments and real data processing results validated the effectiveness of the proposed method.

机译：方位角中的多通道合成孔径雷达（SAR）系统可以实现高分辨率和宽条（HRWS）成像，吸引了密集的研究兴趣。可以通过数字波束形成技术抑制由非均匀采样引起的方位模糊。然而，多通道SAR系统中不可避免的信道错误的存在降低了模糊抑制的性能。基于对多通道SAR回声的特性的分析，发现通道之间的相位偏置可能导致重建的多普勒频谱（RDS）中的跳跃。这封信提出了一种新的基于数据的基于数据的HRWS SAR系统偏置估计方法。假设多普勒带宽内的回声能量拼接是连续的，RDS中没有跳跃。 MultiShannel HRWS SAR系统中相位偏置的估计可以转换为优化解决方案问题。仿真实验和实际数据处理结果验证了该方法的有效性。

著录项

来源
《Remote sensing letters》 |2021年第3期|11-19|共9页
作者
Zhao Jianhui; Wang Kuan; Wang Ling; Guo Zhengwei; Li Ning;
展开▼
作者单位

Henan Univ Coll Comp & Informat Engn Kaifeng Peoples R China;

Henan Univ Coll Comp & Informat Engn Kaifeng Peoples R China;

Nanjing Univ Aeronaut & Astronaut Minist Educ Key Lab Radar Imaging & Microwave Photon Nanjing Peoples R China;

Henan Univ Coll Comp & Informat Engn Kaifeng Peoples R China|Henan Univ Henan Key Lab Big Data Anal & Proc Kaifeng Peoples R China|Henan Univ Henan Engn Res Ctr Intelligent Technol & Applicat Kaifeng Peoples R China;

Henan Univ Coll Comp & Informat Engn Kaifeng Peoples R China|Henan Univ Henan Key Lab Big Data Anal & Proc Kaifeng Peoples R China|Henan Univ Henan Engn Res Ctr Intelligent Technol & Applicat Kaifeng Peoples R China;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类
关键词

A novel phase bias estimation method for multichannel HRWS SAR system in azimuth based on RDS analysis

摘要

著录项

相关主题

期刊订阅