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An Improved Phase Correlation Method for Obtaining Dynamic Feature of the Ocean from Sequential SAR Sub-aperture Images 从序列SAR子孔径图像获取海洋动态特征的改进相位相关方法
Journal of Radars Pub Date : 2013-01-01 DOI: 10.3724/sp.j.1300.2013.13016
Wang Xiaoqing, Su Hai-qing, Chong Jin-song
{"title":"An Improved Phase Correlation Method for Obtaining Dynamic Feature of the Ocean from Sequential SAR Sub-aperture Images","authors":"Wang Xiaoqing, Su Hai-qing, Chong Jin-song","doi":"10.3724/sp.j.1300.2013.13016","DOIUrl":"https://doi.org/10.3724/sp.j.1300.2013.13016","url":null,"abstract":"Dynamic features are important aspects of the ocean. However the dynamic information is lost in most conventional Synthetic Aperture Radar (SAR) image processing methods, because they treat the image as an instantaneous state of the observed area. In fact, we can obtain dynamic features of the ocean from sequential sub-aperture images, because we know that the different parts of the azimuthal aperture correspond to different imaging instances. A key step for retrieving the dynamic features from sequential images is image-matching. However, the heavy noise characteristic of sub-aperture SAR images renders the traditional image-matching methods ineffective. In this paper we propose an image matching method based on improved phase correlation to deal with the heavy noise problem of SAR sub-aperture images. Experimental results show that the improved image-matching method presents an accuracy of 0.15 pixel and noise robustness. The analysis indicates that the improved algorithm is competent for obtaining dynamic information from the medium resolution airborne SAR images or high resolution spaceborne SAR images with 0.15-0.3 m/s estimation precision under most SNR conditions. The improved algorithm was used on an airborne SAR data to retrieve the movement velocity. The retrieved velocity ranged from 0.05-0.5 m/s, which seems to be reasonable value for the ocean current velocity.","PeriodicalId":37701,"journal":{"name":"Journal of Radars","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70073697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Novel Phase Compensation Method for ISAR Imaging in Wideband Radar 宽带雷达ISAR成像的相位补偿新方法
Journal of Radars Pub Date : 2013-01-01 DOI: 10.3724/sp.j.1300.2013.13023
Chen Zeng-ping, Zhang Wei-cheng, Lin Qian-qiang
{"title":"A Novel Phase Compensation Method for ISAR Imaging in Wideband Radar","authors":"Chen Zeng-ping, Zhang Wei-cheng, Lin Qian-qiang","doi":"10.3724/sp.j.1300.2013.13023","DOIUrl":"https://doi.org/10.3724/sp.j.1300.2013.13023","url":null,"abstract":"This paper is proposed to eliminate the negative influence of the Rotational Phase Component (RPC) on the performance of the Doppler Centroid Tracking (DCT) phase compensation method. Firstly, the coherent property between adjacent echo pulses sampled directly in Intermediate Frequency (IF) is analyzed in the paper. Then a coherent phase compensation method is developed to improve the Translational Phase Component (TPC) estimation accuracy of DCT. Compared to the Modified DCT (MDCT) algorithm, the proposed method achieves better phase compensation performance. Experimental results prove the effectiveness and efficiency of the proposed strategy.","PeriodicalId":37701,"journal":{"name":"Journal of Radars","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70074451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Compensation Algorithm Based on a RSPWVD-Hough Transform for Doppler Expansion in Passive Radar 基于RSPWVD-Hough变换的无源雷达多普勒扩展补偿算法
Journal of Radars Pub Date : 2013-01-01 DOI: 10.3724/sp.j.1300.2013.13073
Guan Xin, Zhong Li-hua, Huang Donghui, D. Chibiao
{"title":"A Compensation Algorithm Based on a RSPWVD-Hough Transform for Doppler Expansion in Passive Radar","authors":"Guan Xin, Zhong Li-hua, Huang Donghui, D. Chibiao","doi":"10.3724/sp.j.1300.2013.13073","DOIUrl":"https://doi.org/10.3724/sp.j.1300.2013.13073","url":null,"abstract":"For passive radar, a long integration time is used to achieve high processing gain in order to detect a weak target. As a result, range migration and Doppler expansion may occur for high-speed targets. A keystone transform can be used to rectify range migration introduced by radial velocity. Tangential velocity, however, may lead to Doppler expansion, which entails a loss of integration gain. In this paper, a signal model is presented to analyze the reason for Doppler expansion. A Doppler expansion compensation method is then introduced based on a RSPWVD-Hough transform for a multiple-target scenario. Simulation results show that the proposed method can compensate, with good performance, for the energy loss caused by Doppler expansion in a multiple-target scene. Additionally, results show that the proposed method is also effective for weak targets, and may therefore improve","PeriodicalId":37701,"journal":{"name":"Journal of Radars","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70074490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Impact of Sidelobe Suppression in Shift-frequency Jamming against LFM 移频干扰中旁瓣抑制对LFM的影响
Journal of Radars Pub Date : 2012-11-26 DOI: 10.3724/SP.J.1300.2012.20028
Huang Chongpeng, Wang Jian, Xue Baoguo
{"title":"The Impact of Sidelobe Suppression in Shift-frequency Jamming against LFM","authors":"Huang Chongpeng, Wang Jian, Xue Baoguo","doi":"10.3724/SP.J.1300.2012.20028","DOIUrl":"https://doi.org/10.3724/SP.J.1300.2012.20028","url":null,"abstract":"Sidelobe Suppression (SS) can be found on almost every Linear Frequency Modulated (LFM) pulse radar receiver; Shift-Frequency Jamming (SFJ) is an important method to realize deception jamming using the inherent coupling property between time-delay and frequency-shift of this LFM signal. So, the Inter-Ambiguity Function (IAF) of LFM with SS using normalized parameters including time-delay rate and shift-frequency rate is analyzed. Then the 3:1 cone than weighted, Hamming weighted and cosine square weighted are focused and some parameters related to detection are analyzed. Compared with the none SS, the weighted shift-frequency signal to Jamming loss and the weighted shift-frequency jamming to noise loss are present like M function having the max shift-frequency rate point equal to ± 0.29. And the impact of weighted shift-frequency pulse-width loss are decide by none","PeriodicalId":37701,"journal":{"name":"Journal of Radars","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70072974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of Effects of Flat Surface Assumption to Synthetic Aperture Radar Time-domain Algorithms Imaging Quality: Study of Effects of Flat Surface Assumption to Synthetic Aperture Radar Time-domain Algorithms Imaging Quality 平面假设对合成孔径雷达时域算法成像质量的影响研究——平面假设对合成孔径雷达时域算法成像质量的影响研究
Journal of Radars Pub Date : 2012-11-26 DOI: 10.3724/SP.J.1300.2012.20035
Shi Lin, Yueli Li, Shaoshi Yan, Zhimin Zhou
{"title":"Study of Effects of Flat Surface Assumption to Synthetic Aperture Radar Time-domain Algorithms Imaging Quality: Study of Effects of Flat Surface Assumption to Synthetic Aperture Radar Time-domain Algorithms Imaging Quality","authors":"Shi Lin, Yueli Li, Shaoshi Yan, Zhimin Zhou","doi":"10.3724/SP.J.1300.2012.20035","DOIUrl":"https://doi.org/10.3724/SP.J.1300.2012.20035","url":null,"abstract":"","PeriodicalId":37701,"journal":{"name":"Journal of Radars","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70072647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Design and Implementation of Direct IF Sampling and High-speed Storage System for Wideband Radar: Design and Implementation of Direct IF Sampling and High-speed Storage System for Wideband Radar 宽带雷达直接中频采样与高速存储系统的设计与实现:宽带雷达直接中频采样与高速存储系统的设计与实现
Journal of Radars Pub Date : 2012-11-26 DOI: 10.3724/SP.J.1300.2012.20054
Qianqiang Lin, P. Tang, Zengping Chen
{"title":"Design and Implementation of Direct IF Sampling and High-speed Storage System for Wideband Radar: Design and Implementation of Direct IF Sampling and High-speed Storage System for Wideband Radar","authors":"Qianqiang Lin, P. Tang, Zengping Chen","doi":"10.3724/SP.J.1300.2012.20054","DOIUrl":"https://doi.org/10.3724/SP.J.1300.2012.20054","url":null,"abstract":"","PeriodicalId":37701,"journal":{"name":"Journal of Radars","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70072707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Three-dimensional Resolution Analysis for Geosynchronous Circular SAR: Three-dimensional Resolution Analysis for Geosynchronous Circular SAR 地球同步圆形SAR三维分辨率分析:地球同步圆形SAR三维分辨率分析
Journal of Radars Pub Date : 2012-11-26 DOI: 10.3724/SP.J.1300.2012.20044
Bing-nan Wang, M. Xiang
{"title":"Three-dimensional Resolution Analysis for Geosynchronous Circular SAR: Three-dimensional Resolution Analysis for Geosynchronous Circular SAR","authors":"Bing-nan Wang, M. Xiang","doi":"10.3724/SP.J.1300.2012.20044","DOIUrl":"https://doi.org/10.3724/SP.J.1300.2012.20044","url":null,"abstract":"","PeriodicalId":37701,"journal":{"name":"Journal of Radars","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70072994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
General Calibration Algorithm for Single-transmitting-dual-receiving Polarimetric SAR System: General Calibration Algorithm for Single-transmitting-dual-receiving Polarimetric SAR System 单发射双接收极化SAR系统通用标定算法:单发射双接收极化SAR系统通用标定算法
Journal of Radars Pub Date : 2012-11-26 DOI: 10.3724/SP.J.1300.2012.20062
Lin Chen, Jingjing Zhang, Yang Li, W. Hong
{"title":"General Calibration Algorithm for Single-transmitting-dual-receiving Polarimetric SAR System: General Calibration Algorithm for Single-transmitting-dual-receiving Polarimetric SAR System","authors":"Lin Chen, Jingjing Zhang, Yang Li, W. Hong","doi":"10.3724/SP.J.1300.2012.20062","DOIUrl":"https://doi.org/10.3724/SP.J.1300.2012.20062","url":null,"abstract":"","PeriodicalId":37701,"journal":{"name":"Journal of Radars","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70072962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Study of Power Coefficient and Insertion Phase Shift for Organic Magnetic Slab: Study of Power Coefficient and Insertion Phase Shift for Organic Magnetic Slab 有机磁性板坯功率系数与插入相移的研究有机磁性板坯功率系数与插入相移的研究
Journal of Radars Pub Date : 2012-11-26 DOI: 10.3724/SP.J.1300.2012.20030
Gao-sheng Li, Lei Jia, Y. Ming, Q. Cao
{"title":"Study of Power Coefficient and Insertion Phase Shift for Organic Magnetic Slab: Study of Power Coefficient and Insertion Phase Shift for Organic Magnetic Slab","authors":"Gao-sheng Li, Lei Jia, Y. Ming, Q. Cao","doi":"10.3724/SP.J.1300.2012.20030","DOIUrl":"https://doi.org/10.3724/SP.J.1300.2012.20030","url":null,"abstract":"","PeriodicalId":37701,"journal":{"name":"Journal of Radars","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70072519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Pixel-similarity Measurement in SAR Image Despeckling: The Pixel-similarity Measurement in SAR Image Despeckling SAR图像去斑中的像素相似度测量:SAR图像去斑中的像素相似度测量
Journal of Radars Pub Date : 2012-11-26 DOI: 10.3724/SP.J.1300.2012.20025
Guang-Ting Li, Liang Yang, Pingping Huang, Wei-dong Yu
{"title":"The Pixel-similarity Measurement in SAR Image Despeckling: The Pixel-similarity Measurement in SAR Image Despeckling","authors":"Guang-Ting Li, Liang Yang, Pingping Huang, Wei-dong Yu","doi":"10.3724/SP.J.1300.2012.20025","DOIUrl":"https://doi.org/10.3724/SP.J.1300.2012.20025","url":null,"abstract":"","PeriodicalId":37701,"journal":{"name":"Journal of Radars","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70072328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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