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2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)最新文献

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Maritime Moving Target Detection with BeiDou-based Passive Radar 基于北斗无源雷达的海上运动目标探测
2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2019-11-01 DOI: 10.1109/APSAR46974.2019.9048518
Chuan Huang, Fei Wang, Zhongyu Li, Chuyang Li, Junjie Wu, Jianyu Yang
{"title":"Maritime Moving Target Detection with BeiDou-based Passive Radar","authors":"Chuan Huang, Fei Wang, Zhongyu Li, Chuyang Li, Junjie Wu, Jianyu Yang","doi":"10.1109/APSAR46974.2019.9048518","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048518","url":null,"abstract":"This paper presents a maritime moving target detection technique for passive radar with BeiDou satellite as transmitter of opportunity. Due to the restricted power budget provided by BeiDou satellite, to detect the target, the echo over a long time needs to be collected and integrated. In this paper, first, a range cell migration (RCM) correction technique called range-symmetry transform (RST) is applied, gathering the echo energy into a same range. Then, the dechirp processing is performed to the extracted azimuth signal, after which the dechirped signal is segmented into multiple frames. Finally, a coherent integration inside each frame is accomplished by means of the Fourier transform, followed by a non-coherent integration of multiple frames. The target echo is well concentrated in the final integration result, providing the capability of target detection. The effectiveness of the proposed maritime moving target detection technique is verified by simulations.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127732139","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
Amplitude and Phase Errors Correction for Ground-based Arc Array SAR 陆基弧阵SAR的幅相误差校正
2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2019-11-01 DOI: 10.1109/apsar46974.2019.9048445
Zengshu Huang, Jinping Sun, W. Tan, Pingping Huang, Yaolong Qi
{"title":"Amplitude and Phase Errors Correction for Ground-based Arc Array SAR","authors":"Zengshu Huang, Jinping Sun, W. Tan, Pingping Huang, Yaolong Qi","doi":"10.1109/apsar46974.2019.9048445","DOIUrl":"https://doi.org/10.1109/apsar46974.2019.9048445","url":null,"abstract":"Ground-based arc array synthetic aperture radar (GB-AA-SAR) is a multi-channel microwave system, so the amplitude and phase errors between the channels can not be neglected in GB-AA-SAR signal processing. If the errors are not corrected accurately, the image quality will be degraded seriously. In this paper, the influences of multi-channel amplitude and phase errors on GB-AA-SAR imaging are analyzed firstly. Then an amplitude and phase errors correction method using an arc calibrator is presented. Finally, numerical simulation experiments are carried out to validate the proposed method.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126253889","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
Preliminary Results of Airborne Video Synthetic Aperture Radar in THz Band 太赫兹波段机载视频合成孔径雷达初步研究成果
2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2019-11-01 DOI: 10.1109/APSAR46974.2019.9048467
Wen Wang, D. An, Zhimin Zhou
{"title":"Preliminary Results of Airborne Video Synthetic Aperture Radar in THz Band","authors":"Wen Wang, D. An, Zhimin Zhou","doi":"10.1109/APSAR46974.2019.9048467","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048467","url":null,"abstract":"Video synthetic aperture radar (ViSAR) can provide long-time persistent surveillance of region of interest (ROI) at high frame rate, which has attracted more and more attention from SAR community. A way for achieving high frame rate is increasing the carrier frequency, so ViSAR often works in Terahertz (THz) band. In this paper, preliminary results of airborne ViSAR in THz band are presented. The frame rate can achieve 10Hz when the azimuth resolution is about 0.15m.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126325283","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
On the Doppler Centroid Estimation of SAR System Using Coherence Information 基于相干信息的SAR系统多普勒质心估计
2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2019-11-01 DOI: 10.1109/APSAR46974.2019.9048364
Zhonghua Chen, Yusheng Hou, Ruifeng Lu, Yanyang Liu, Zhiming Liu, Jiuling Zhang, Di Zhao, Tao Li, Junli Chen
{"title":"On the Doppler Centroid Estimation of SAR System Using Coherence Information","authors":"Zhonghua Chen, Yusheng Hou, Ruifeng Lu, Yanyang Liu, Zhiming Liu, Jiuling Zhang, Di Zhao, Tao Li, Junli Chen","doi":"10.1109/APSAR46974.2019.9048364","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048364","url":null,"abstract":"The Doppler centroid estimation, one of key steps in synthetic aperture radar (SAR) processing, suffers from the asymmetry of Doppler frequency spectrum and the signal-to-noise ratio (SNR). In this paper, the coherence of the two adjacent samples in azimuth is utilized to reject the poor estimations. Accordingly, an improved Doppler centroid estimation method is proposed. The experimental results with the RadarSAT-1 data validate the effectiveness of the proposed method.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126415619","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
An Embedded SIW Slot Array Antenna Operating in W-Band 工作在w波段的嵌入式SIW槽阵天线
2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2019-11-01 DOI: 10.1109/apsar46974.2019.9048355
Rong Shen, Dan Sun, L. You, Jinhua Xie, Bing-zheng Xu
{"title":"An Embedded SIW Slot Array Antenna Operating in W-Band","authors":"Rong Shen, Dan Sun, L. You, Jinhua Xie, Bing-zheng Xu","doi":"10.1109/apsar46974.2019.9048355","DOIUrl":"https://doi.org/10.1109/apsar46974.2019.9048355","url":null,"abstract":"A design method of embedded SIW slot array antenna is proposed in this paper. It regards the metal groove walls as waveguide narrow-walls, instead of the traditional metallized through holes. So that it is easier to control the resonant parameters of slots during design process. The radiation power of a taper distribution in slot array is designed, corresponding to the geometric parameters database of SIW slot. Then this paper completed the electromagnetic simulation of SIW slot array within $32 times 36$ elements. All pattern peak value in operating frequency band is over 37 dBi, the sidelobe level is below −19.2 dB, and the half power beam width is within 2.4 °. It verifies the feasibility of design method.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128176245","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
2D-Temporal Convolution for Target Recognition of SAR Sequence Image 基于二维时间卷积的SAR序列图像目标识别
2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2019-11-01 DOI: 10.1109/APSAR46974.2019.9048438
Ruihang Xue, Xueru Bai
{"title":"2D-Temporal Convolution for Target Recognition of SAR Sequence Image","authors":"Ruihang Xue, Xueru Bai","doi":"10.1109/APSAR46974.2019.9048438","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048438","url":null,"abstract":"Although deep learning has greatly improved the target recognition accuracy of synthetic aperture radar (SAR), the characteristics of SAR continuous imaging are not fully utilized in available methods. This paper proposes a SAR sequence image target recognition network based on two-dimensional (2D) temporal convolution. The proposed network includes three stages: feature extraction, sequence modeling and classification. Firstly, convolutional networks are utilized to extract features of each image and obtain a sequence of feature vectors. Secondly, the sequence is fed into the 2D temporal convolution network and sequence modeling is performed. Finally, recognition result of the SAR sequence image is inferred by the softmax classifier. Compared with available methods, the proposed network shows better recognition accuracy on the moving and stationary target acquisition and recognition (MSTAR) dataset.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"468 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115869318","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
An automatic optimization method of forest type classification using PolSAR image based on genetic algorithm 基于遗传算法的PolSAR影像森林类型自动优化分类方法
2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2019-11-01 DOI: 10.1109/APSAR46974.2019.9048333
Kunpeng Xu, E. Chen, Zeng-yuan Li, Lei Zhao, Xiangxing Wan, Z. Wen
{"title":"An automatic optimization method of forest type classification using PolSAR image based on genetic algorithm","authors":"Kunpeng Xu, E. Chen, Zeng-yuan Li, Lei Zhao, Xiangxing Wan, Z. Wen","doi":"10.1109/APSAR46974.2019.9048333","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048333","url":null,"abstract":"In order to improve the performance of nonparametric classifier on high dimensional polarization features set, an automatic optimization method based on genetic algorithm is proposed, and is used for polarimetric synthetic aperture radar (PolSAR) image forest land type classification. The method focusing on two main aspects that affect the classification performance, which are features combination and model hyperparameter. Different from conventional process which optimize those two aspects respectively. Our proposed method using genetic algorithm as searching engine, by regarding features combination and hyperparameters as a set of model settings. We can optimize those two aspects simultaneously, so that the synergy affect between those two aspects can be considered. A PolSAR image (C-band, quad polarization) data were used to verify the proposed optimization method using support vector machine (SVM) as classifier.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115898150","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
A GMTI Method for Near-Space Hypersonic Vehicle-borne SAR based on Track Before Detect in Image Domain 基于图像域先检测后跟踪的近空间高超声速机载SAR GMTI方法
2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2019-11-01 DOI: 10.1109/APSAR46974.2019.9048318
Ning Du, Junjie Wu, Zhongyu Li, Mafei Xu, Haiguang Yang, Jianyu Yang
{"title":"A GMTI Method for Near-Space Hypersonic Vehicle-borne SAR based on Track Before Detect in Image Domain","authors":"Ning Du, Junjie Wu, Zhongyu Li, Mafei Xu, Haiguang Yang, Jianyu Yang","doi":"10.1109/APSAR46974.2019.9048318","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048318","url":null,"abstract":"Ground Moving Target Indication (GMTI) for Near-space Hypersonic vehicle borne Synthetic Aperture Radar (NH-SAR) is an important part of remote sensing applications. However, the ultra-long range and the ultra-high flight speed of NH-SAR causes the lower echo signal-to-noise ratio (SNR) and the expanded clutter spectrum, which reduces the performance of traditional GMTI methods such as Displaced Phase Centre Antennas (DPCA), along track interferometry (ATI) and Space Time Adaptive Processing (STAP). In this paper, a method based on Track Before Detect (TBD) in image domain is proposed to perform GMTI for NH-SAR. This method obtains the multi-frame images of NH-SAR firstly, and tracks the trajectories of the moving targets in the images. The simulation results validate the effectiveness of the proposed method, and show that this method has lower false alarm probabilities under the low-SNR condition.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131457256","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
Slow-Time MIMO Radar Clutter Mitigation Based on Robust Pulse-to-Pulse Coding 基于鲁棒脉冲编码的慢时MIMO雷达杂波抑制
2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2019-11-01 DOI: 10.1109/APSAR46974.2019.9048256
Feng Xu, Junqi Xue, Xiaopeng Yang, Fawei Yang, Zhanze Wang
{"title":"Slow-Time MIMO Radar Clutter Mitigation Based on Robust Pulse-to-Pulse Coding","authors":"Feng Xu, Junqi Xue, Xiaopeng Yang, Fawei Yang, Zhanze Wang","doi":"10.1109/APSAR46974.2019.9048256","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048256","url":null,"abstract":"Slow-time MIMO radar is investigated to deal with some cost sensitive applications like UAVs detection to avoid the use of arbitrary waveform generators and digital receivers. But this method suffers from the deterioration of Signal to Noise Ratio (SNR) caused by superposition of clutter. To solve this problem, a robust pulse-to-pulse coding method is proposed to mitigate clutter as well as suppress the sidelobe level in Doppler domain. In our proposed method, the problem of optimizing weighting vector is transformed into a typical MVDR problem and the design of new weighting vector is obtained by the combination of MVDR solution and a sequence of weight coefficients which are calculated by Fourier inversion. This proposed method can mitigate the clutter adaptively while the sidelobe is suppressed. Both simulation and experiments results validate the reliability and effectiveness of this method.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132072574","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 P-band SAR Satellite: Opportunities and Challenges p波段SAR卫星:机遇与挑战
2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) Pub Date : 2019-11-01 DOI: 10.1109/APSAR46974.2019.9048581
Wei Li, Qingwei Tong, Liying Xu, Peng Ji, Fang Dong, Yingjun Yu, Junli Chen, Lei Zhao, Lu Zhang, C. Xie, Baidong Yao, Q. Yin, Bing Sun, D. Zheng, Changcheng Wang, Liming Jiang
{"title":"The P-band SAR Satellite: Opportunities and Challenges","authors":"Wei Li, Qingwei Tong, Liying Xu, Peng Ji, Fang Dong, Yingjun Yu, Junli Chen, Lei Zhao, Lu Zhang, C. Xie, Baidong Yao, Q. Yin, Bing Sun, D. Zheng, Changcheng Wang, Liming Jiang","doi":"10.1109/APSAR46974.2019.9048581","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048581","url":null,"abstract":"The P-band frequency is less common in spaceborne synthetic aperture radar (SAR) systems, while has superior abilities on penetration through the vegetation canopy and soil compared with X-, C- and L-bands. As observations from P-band SAR satellite will offer an unique opportunity to estimate forest biomass, map the topography of forest floors and detect buried targets, the demand for such a satellite is getting stronger in China and over the world. This paper aims to report the results we achieved during the feasibility study of P-band SAR satellite, including evaluation of P-band penetration ability with airborne experiments and an overview of applications of P-band SAR data.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130011633","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
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