Phase bias estimation for multi-channel HRWS SAR based on Doppler spectrum optimisation

Phase bias estimation for multi-channel HRWS SAR based on Doppler spectrum optimisation
复制标题

基于多普勒频谱优化的多通道HRWS SAR相位偏差估计

DOI:
10.1049/el.2016.2972
复制
发表时间:
2016-09
影响因子:
1.1
通讯作者:
Chen Junli
Chen Junli
中科院分区:
工程技术4区
文献类型:
--
作者:
Wang Zhibin;Liu Yanyang;Li Zhenfang;Xu Gang;Chen Junli

文献摘要

参考文献

被引文献

相似文献

采用数字波束形成(DBF)技术的沿航迹多通道合成孔径雷达(SAR)系统可以同时实现高分辨率和宽测绘带成像。然而,不可避免的相位偏差的存在往往会降低DBF的性能。针对这一问题,提出了一种基于多普勒谱优化的相位偏差估计算法。通过利用相位偏差会导致多普勒谱展宽的事实,可以通过最大化多普勒谱的锐度优化来成功地估计相位偏差。对某机载多通道系统采集的合成孔径雷达数据进行了实验,验证了算法的有效性。
By applying digital beam-forming (DBF) technique, the along-track multi-channel synthetic aperture radar (SAR) system can simultaneously achieve high-resolution and wide-swath (HRWS) imaging. However, the presence of unavoidable phase biases tends to degrade the DBF performance. To address this issue, a novel phase bias estimation algorithm based on Doppler spectrum optimisation is proposed. By exploiting the fact that phase bias would cause Doppler spectrum broadened, the phase biases can be successfully estimated by maximising a sharpness optimisation of the Doppler spectrum. The effectiveness of the algorithm is validated by experimental result carried out on the SAR data collected by an air-borne multi-channel system.
DOI: 10.1109/lgrs.2013.2264771
发表时间: 2014-02
影响因子: 4.8
作者:
Yanyang Liu;Zhenfang Li;Taoli Yang;Z. Bao
通讯作者: Yanyang Liu;Zhenfang Li;Taoli Yang;Z. Bao
DOI: 10.1109/taes.2009.5089542
发表时间: 2009-04-01
影响因子: 4.4
作者:
Gebert, Nicolas;Krieger, Gerhard;Moreira, Alberto
通讯作者: Moreira, Alberto
DOI: 10.1109/tgrs.2012.2201947
发表时间: 2013-01-01
影响因子: 8.2
作者:
Kim, Jung-Hyo;Younis, Marwan;Krieger, Gerhard
通讯作者: Krieger, Gerhard
DOI: 10.1109/lgrs.2004.832700
发表时间: 2004-10-01
影响因子: 4.8
作者:
Krieger, Gerhard;Gebert, Nicolas;Moreira, Alberto
通讯作者: Moreira, Alberto
DOI: 10.1109/taes.2006.1642562
发表时间: 2006-04-01
影响因子: 4.4
作者:
Li, Zhenfang;Bao, Zheng;Liao, Guisheng
通讯作者: Liao, Guisheng