发布求助
文献互助 智能选刊 最新文献

2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)最新文献

筛选
英文 中文
Software defined radar platform testbed for micro-Doppler detection 软件定义的微多普勒探测雷达平台试验台
2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2015-10-29 DOI: 10.1109/APSAR.2015.7306152
In-Sang Woo, Jung S. Jung, Myeong-Seok Park, Y. Kwag
{"title":"Software defined radar platform testbed for micro-Doppler detection","authors":"In-Sang Woo, Jung S. Jung, Myeong-Seok Park, Y. Kwag","doi":"10.1109/APSAR.2015.7306152","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306152","url":null,"abstract":"This paper presents the development results of the software-defined radar (SDR) platform testbed. The SDR platform consists of a RF and digital hardware modules as well as reconfigurable software module. As a test result, the spectrogram analysis shows that the micro-Doppler signature of the small pendulum motion can be accurately detected and discriminated using the developed SDR platform testbed.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124594482","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: 7
High precision calculation of SAR image quality parameters SAR图像质量参数的高精度计算
2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2015-10-29 DOI: 10.1109/APSAR.2015.7306226
Jiajia Guo, Kaizhi Wang, Yiran Jin, Xin Lin, Yesheng Gao, Xingzhao Liu
{"title":"High precision calculation of SAR image quality parameters","authors":"Jiajia Guo, Kaizhi Wang, Yiran Jin, Xin Lin, Yesheng Gao, Xingzhao Liu","doi":"10.1109/APSAR.2015.7306226","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306226","url":null,"abstract":"This paper mainly discusses some quantitative parameters of SAR image quality (including the definition of the parameters, physical meaning, mathematical calculation method), Then based on the description of radar image above, Choosing the commercial SAR image, Such as Terra SAR to analysis the parameters, giving the final result of value of parameters.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"260 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124253393","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 fast minimum discontinuity based phase unwrapping method 基于最小不连续的快速相位展开方法
2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2015-10-29 DOI: 10.1109/APSAR.2015.7306141
Junyi Xu, D. An, Xiaotao Huang, K. Ji
{"title":"A fast minimum discontinuity based phase unwrapping method","authors":"Junyi Xu, D. An, Xiaotao Huang, K. Ji","doi":"10.1109/APSAR.2015.7306141","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306141","url":null,"abstract":"Phase unwrapping (PU) is important in reconstructing the digital elevation model (DEM) of a scene from its interferometric synthetic aperture radar (InSAR) data. The traditional minimum discontinuity PU algorithms are highly accurate while with time-consuming computation. To solve this problem, we combined a novel idea, fast pre-unwrapping where dipole cuts are generated and optimized, with Flynn's algorithm. The preliminary result obtained by the fast pre-unwrapping algorithm can be further optimized with Flynn's algorithm efficiently. The effectiveness and the efficiency are tested on the simulated and real InSAR data.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124034902","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 hybrid SAR image registration algorithm base on SURF and mutual information 基于SURF和互信息的混合SAR图像配准算法
2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2015-10-29 DOI: 10.1109/APSAR.2015.7306229
Bo Pang, Hong Sun, Qiuze Yu, Peng Wu
{"title":"A hybrid SAR image registration algorithm base on SURF and mutual information","authors":"Bo Pang, Hong Sun, Qiuze Yu, Peng Wu","doi":"10.1109/APSAR.2015.7306229","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306229","url":null,"abstract":"Aim at the problems of features points is difficult to extract, image deformation is difficult to estimate and low registration accuracy in synthetic aperture radar (SAR) image. This paper present a hybrid SAR image registration algorithm base on speeded up robust features (SURF) and mutual information. The hybrid registration algorithm consists of coarse registration and fine registration, respectively. In the coarse registration stage, use SURF algorithm finds the regional extreme value feature points, due to the SURF algorithm ignore structural features, we use Harris corner detection algorithm to extract corner feature, thus extend the feature points to improve the accuracy of coarse registration. Acquire image transform parameters by affine transformation model. In the fine registration stage, through maximize mutual information (MI) to complete the further registration, acquire the more accuracy of image transform parameters, and achieve the high accuracy SAR image registration. The experimental results shows that the method presented in this paper can improve the accuracy of the algorithm.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124776491","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: 5
Image formation on undulating terrain using the upgraded Ingara L-band radar system 使用升级后的因加拉l波段雷达系统在起伏地形上成像
2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2015-10-29 DOI: 10.1109/APSAR.2015.7306286
P. Pincus, M. Preiss, N. Stacy, D. Gray
{"title":"Image formation on undulating terrain using the upgraded Ingara L-band radar system","authors":"P. Pincus, M. Preiss, N. Stacy, D. Gray","doi":"10.1109/APSAR.2015.7306286","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306286","url":null,"abstract":"A beamforming approach to SAR image formation is shown to facilitate spatially variant aperture trimming which maximises the potential repeat-pass coherence when focusing onto undulating terrain. The method is demonstrated using the upgraded Australian airborne radar system, Ingara.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129084555","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
Data volume reduction in high-resolution wide-swath SAR systems 高分辨率宽幅SAR系统中数据量的减少
2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2015-10-29 DOI: 10.1109/APSAR.2015.7306169
Michelangelo Villano, G. Krieger, A. Moreira
{"title":"Data volume reduction in high-resolution wide-swath SAR systems","authors":"Michelangelo Villano, G. Krieger, A. Moreira","doi":"10.1109/APSAR.2015.7306169","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306169","url":null,"abstract":"High-resolution wide-swath (HRWS) synthetic aperture radar (SAR) systems are very attractive for the observation of dynamic processes on the Earth's surface, but they are also associated with a huge data volume. In order to comply with azimuth ambiguity requirements, in fact, a pulse repetition frequency (PRF) much higher than the required processed Doppler bandwidth (PBW) is often desirable. The data volume can be drastically reduced, if on-board Doppler filtering and decimation are performed prior to downlink. A finite impulse response (FIR) filter with a relatively small number of taps suffices to suppress the additional ambiguous components and recover the original impulse response. This strategy is also applicable and especially relevant to staggered SAR systems, where on-board Doppler filtering and resampling can be jointly implemented.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130299418","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: 7
The DLR SAR calibration center DLR SAR标定中心
2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2015-10-29 DOI: 10.1109/APSAR.2015.7306181
Jens Reimann, M. Schwerdt, K. Schmidt, N. Ramon, Gabriel Alfonzo Castellanos, B. Doring, D. Rudolf, S. Raab, John Mohan Walter Antony, M. Zink
{"title":"The DLR SAR calibration center","authors":"Jens Reimann, M. Schwerdt, K. Schmidt, N. Ramon, Gabriel Alfonzo Castellanos, B. Doring, D. Rudolf, S. Raab, John Mohan Walter Antony, M. Zink","doi":"10.1109/APSAR.2015.7306181","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306181","url":null,"abstract":"A SAR system has to be calibrated for quantitative measurement. During this process all essential parameters of a SAR image are linked to their geophysical quantity. This includes the location of the image pixel, its backscattering characteristics (in amplitude and in phase) and polarimetric information. The Microwave and Radar Institute of the DLR has gained a lot of experience in these calibration procedures during the last decades and has developed special methods and dedicated reference targets for spaceborne SAR system calibration. In example of calibration results obtained for different spaceborne SAR systems the DLR SAR Calibration Center is presented.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128538025","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: 5
Ground moving target imaging and motion parameter estimation using radon-second-order WVD transform 基于氡-二阶WVD变换的地面运动目标成像及运动参数估计
2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2015-10-29 DOI: 10.1109/APSAR.2015.7306318
Penghui Huang, G. Liao, Zhiwei Yang, X. Xia, Jingtao Ma
{"title":"Ground moving target imaging and motion parameter estimation using radon-second-order WVD transform","authors":"Penghui Huang, G. Liao, Zhiwei Yang, X. Xia, Jingtao Ma","doi":"10.1109/APSAR.2015.7306318","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306318","url":null,"abstract":"For a SAR system with a moving target, long synthetic aperture time may greatly improve the SAR imaging quality, whereas defocusing may occur due to the range cell migration (RCM) and Doppler frequency migration (DFM) effects. To address those issues, a key procedure is to perform the accurate motion compensation, and then, the motion parameter estimation becomes essential. In this paper, a novel motion parameter estimation method named Second-order WVD (SoWVD) transform is proposed, which can achieve motion parameter estimation by 2-D Fourier transform (FT) instead of the exhaustive search of the trajectory slope in time-frequency plane by Wigner-Hough transform (WHT). In the sequel, a new SAR imaging method based on a combined Radon-SoWVD transform is developed, which can simultaneously eliminate the RCM and DFM effects without the restriction of Doppler ambiguity. After compensating target motion effect according to the estimated motion parameters, a ground moving target can be finely imaged. Real data processing results are provided to demonstrate the validity of the proposed imaging method.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127798031","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: 6
SAR interferometrie phase filtering based on wavelet transform and local frequency estimation 基于小波变换和局部频率估计的SAR干涉相位滤波
2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2015-10-29 DOI: 10.1109/APSAR.2015.7306193
Fangfang Li, X. Lin, Yueting Zhang, Donghui Hu, Lijia Huang, C. Ding
{"title":"SAR interferometrie phase filtering based on wavelet transform and local frequency estimation","authors":"Fangfang Li, X. Lin, Yueting Zhang, Donghui Hu, Lijia Huang, C. Ding","doi":"10.1109/APSAR.2015.7306193","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306193","url":null,"abstract":"A novel approach combining the local frequency estimation with wavelet transform is presented to reduce interferometric phase noise for InSAR. First, the maximum likelihood estimator is used to obtain the frequency range of the noisy interferogram. Then, the wavelet transform is employed to obtain the wavelet coefficients of the real and imaginary parts of the complex interferogram. For the wavelet coefficients within the estimated frequency range and that out of the range, the NeighShrink and VisuShrink methods are employed respectively to shrink them. As a result, the noise can be effectively filtered without the loss of detailed information of the interferogram based on the advantages of the two shrinkage methods. The performance of noise reduction and fringe preservation is verified by the experiments with real interferogram.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121232290","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
Beam-scanning improvement of reflectarrays using single-layered sub-wavelength elements 利用单层亚波长元件改进反射射线的波束扫描
2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2015-10-29 DOI: 10.2528/PIERC14051806
Lu Guo, P. Tan, T. Chio
{"title":"Beam-scanning improvement of reflectarrays using single-layered sub-wavelength elements","authors":"Lu Guo, P. Tan, T. Chio","doi":"10.2528/PIERC14051806","DOIUrl":"https://doi.org/10.2528/PIERC14051806","url":null,"abstract":"This paper studies the use of double concentric circular ring elements arranged in a sub-wavelength grid on a single layer of substrate, in an effort to enhance the beamscanning capability of reflectarrays. The work is carried out at 10 GHz on a 405mm×405mm aperture. In addition to a broad gain bandwidth, the reflectarray with a sub-wavelength grid demonstrates a superior beam-scanning performance compared to the one with λ/2 grid. The measured results show that the reflectarray with 0.3λ grid spacing realizes a 1-dB gain bandwidth of 22% with an aperture efficiency of 56.6%. With the reflectarray fixed, this paper investigates the possibility of beam scanning by displacing the feed horn laterally. The results show that beam scanning of ±15o is possible while retaining the broadband characteristics.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121953059","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: 4
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信