Pub Date : 2019-11-01DOI: 10.1109/apsar46974.2019.9048483
Yongkang Li, Laisen Nie
Due to the advantages of large coverage, short revisit time, and long synthetic aperture time, medium-earth-orbit (MEO) synthetic aperture radar (SAR)-ground moving target indication (GMTI) system is an attractive tool for space-to-ground surveillance and reconnaissance. However, the nonlinear motion of MEO SAR and the significant earth rotation dramatically complicate the relative motion between the radar and a ground moving target. Thus, the signal modeling and the design of GMTI methods for MEO SAR are challenging. To provide a basis for addressing this problem, this paper studies the issue of ground moving target range equation modeling for MEO SAR-GMTI systems. In this paper, the range equation of a ground moving target is developed, and the second-order Taylor approximation of the target's range equation is derived. Moreover, numerical simulations are conducted to investigate the accuracy of the derived range equation.
{"title":"Study on the range equation modeling of MEO SAR-GMTI systems","authors":"Yongkang Li, Laisen Nie","doi":"10.1109/apsar46974.2019.9048483","DOIUrl":"https://doi.org/10.1109/apsar46974.2019.9048483","url":null,"abstract":"Due to the advantages of large coverage, short revisit time, and long synthetic aperture time, medium-earth-orbit (MEO) synthetic aperture radar (SAR)-ground moving target indication (GMTI) system is an attractive tool for space-to-ground surveillance and reconnaissance. However, the nonlinear motion of MEO SAR and the significant earth rotation dramatically complicate the relative motion between the radar and a ground moving target. Thus, the signal modeling and the design of GMTI methods for MEO SAR are challenging. To provide a basis for addressing this problem, this paper studies the issue of ground moving target range equation modeling for MEO SAR-GMTI systems. In this paper, the range equation of a ground moving target is developed, and the second-order Taylor approximation of the target's range equation is derived. Moreover, numerical simulations are conducted to investigate the accuracy of the derived range equation.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"117 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":"115453772","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}
Pub Date : 2019-11-01DOI: 10.1109/APSAR46974.2019.9048255
Shuang Li, Yan Wang, Tao Xing, Gen Li, Minkun Liu, Zegang Ding
Ka-band Interfeometry SAR (InSAR) is a promising technique for global submesoscale sea surface tomography mapping, which still remains blank today. In this paper, we will introduce the arrangement, key techniques and preliminary results of our airborne Ka-band InSAR experiment. In the condition of small look angle, we have demonstrated good coherence of the two SAR images. To inverse precise sea surface tomography uncontrolled condition, we have proposed a nadir track based calibration method. By comparing to the buoy data, the inverse error is demonstrated to be less than 10cm. These results have established a solid foundation for the design and data processing of the global submesoscale oceanographic phenomenon by the Ka-band SAR Interferometry payload of the future Chinese Guanlan satellite.
{"title":"Wide Swath Sea Surface Topography Mapping via Ka-band SAR Interferometry","authors":"Shuang Li, Yan Wang, Tao Xing, Gen Li, Minkun Liu, Zegang Ding","doi":"10.1109/APSAR46974.2019.9048255","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048255","url":null,"abstract":"Ka-band Interfeometry SAR (InSAR) is a promising technique for global submesoscale sea surface tomography mapping, which still remains blank today. In this paper, we will introduce the arrangement, key techniques and preliminary results of our airborne Ka-band InSAR experiment. In the condition of small look angle, we have demonstrated good coherence of the two SAR images. To inverse precise sea surface tomography uncontrolled condition, we have proposed a nadir track based calibration method. By comparing to the buoy data, the inverse error is demonstrated to be less than 10cm. These results have established a solid foundation for the design and data processing of the global submesoscale oceanographic phenomenon by the Ka-band SAR Interferometry payload of the future Chinese Guanlan satellite.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"30 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":"121660177","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}
Pub Date : 2019-11-01DOI: 10.1109/APSAR46974.2019.9048505
Duk‐jin Kim
Tidal flats which are located between land and ocean are very vulnerable to the change of environment. These places are now facing many environmental challenges related to climate change and human-induced impacts. Topographic changes related to sedimentation or erosion in tidal flats are the most evident sign of the environmental changes. The tidal flats usually have small variations of topographies and experience ebb and flood tides every day. The conventional SAR interferometric techniques (such as repeat-pass InSAR) cannot be applied for generating digital elevation models (DEMs) in these tidal flats because of low coherence caused by ebb and flood tides. In this study, we developed a long-baseline single-pass airborne interferometric SAR (InSAR) system that has a small ambiguity height. We collected InSAR data in several tidal flats, the west coast of Korean peninsula, using our airborne InSAR system and TanDEM-X. The TanDEM-X is a space borne quasi-single pass interferometic SAR system. We also investigated the expected accuracy of DEM as function of baseline and coherence. In general, longer baseline is better for generating very sensitive and fine DEM that is absolutely needed for tidal flats, because longer baseline has smaller ambiguity height. But longer baseline can also cause low coherence due to baseline decorrelation. As the baseline increase, common spectral region is also decreased resulting in poorer coherence and poor vertical accuracy. Based on these investigations, we proposed optimal baselines for airborne InSAR system and space-borne SAR system. Finally, we compared the constructed topographies from our long-baseline airborne InSAR and TanDEM-X with GPS-RTK measurements.
{"title":"Measurement of Tidal Flat Topography using Long-Baseline InSAR","authors":"Duk‐jin Kim","doi":"10.1109/APSAR46974.2019.9048505","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048505","url":null,"abstract":"Tidal flats which are located between land and ocean are very vulnerable to the change of environment. These places are now facing many environmental challenges related to climate change and human-induced impacts. Topographic changes related to sedimentation or erosion in tidal flats are the most evident sign of the environmental changes. The tidal flats usually have small variations of topographies and experience ebb and flood tides every day. The conventional SAR interferometric techniques (such as repeat-pass InSAR) cannot be applied for generating digital elevation models (DEMs) in these tidal flats because of low coherence caused by ebb and flood tides. In this study, we developed a long-baseline single-pass airborne interferometric SAR (InSAR) system that has a small ambiguity height. We collected InSAR data in several tidal flats, the west coast of Korean peninsula, using our airborne InSAR system and TanDEM-X. The TanDEM-X is a space borne quasi-single pass interferometic SAR system. We also investigated the expected accuracy of DEM as function of baseline and coherence. In general, longer baseline is better for generating very sensitive and fine DEM that is absolutely needed for tidal flats, because longer baseline has smaller ambiguity height. But longer baseline can also cause low coherence due to baseline decorrelation. As the baseline increase, common spectral region is also decreased resulting in poorer coherence and poor vertical accuracy. Based on these investigations, we proposed optimal baselines for airborne InSAR system and space-borne SAR system. Finally, we compared the constructed topographies from our long-baseline airborne InSAR and TanDEM-X with GPS-RTK measurements.","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":"125761779","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}
Pub Date : 2019-11-01DOI: 10.1109/APSAR46974.2019.9048504
L. Qiu, Wei Qu, Hongfeng Pang, Jun Yang
Stationary human target localization is a key issue in through-the-wall sensing applications. When there are multiple stationary human targets, wrong data association may result in localization of false alarms. This paper proposes an approach of multiple stationary targets localization based on data association using UWB MIMO radar with one transmitting and two receiving antennas. First, the number and distances of stationary human targets are detected on each channel separately, then correlation coefficient matrix is introduced to evaluate the association probability of targets from different channels, finally the targets are located with no artifacts. Simulation and experimental results verified the superiority of the proposed approach.
固定人体目标定位是穿墙传感应用中的一个关键问题。当存在多个静止人体目标时，错误的数据关联可能会导致定位误报。本文提出了一种基于数据关联的多静止目标定位方法，使用具有一个发射天线和两个接收天线的 UWB MIMO 雷达。首先，在每个信道上分别检测静止人体目标的数量和距离，然后引入相关系数矩阵来评估不同信道目标的关联概率，最后对目标进行无伪影定位。仿真和实验结果验证了所提方法的优越性。
{"title":"Multiple Stationary Human Targets Localization in Through-the-wall UWB MIMO Radar","authors":"L. Qiu, Wei Qu, Hongfeng Pang, Jun Yang","doi":"10.1109/APSAR46974.2019.9048504","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048504","url":null,"abstract":"Stationary human target localization is a key issue in through-the-wall sensing applications. When there are multiple stationary human targets, wrong data association may result in localization of false alarms. This paper proposes an approach of multiple stationary targets localization based on data association using UWB MIMO radar with one transmitting and two receiving antennas. First, the number and distances of stationary human targets are detected on each channel separately, then correlation coefficient matrix is introduced to evaluate the association probability of targets from different channels, finally the targets are located with no artifacts. Simulation and experimental results verified the superiority of the proposed approach.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"62 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":"125775122","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}
Pub Date : 2019-11-01DOI: 10.1109/APSAR46974.2019.9048405
Jiaming Chen, Tianqing Ling
In this paper, a Ka-band magic-T based on the modified structure of Gysel power divider is proposed. Due to the symmetrical structure, two equal in-phase outputs are achieved. The signal applied to the difference port, is split by an additional half-wavelength branch into two equal out-of-phase signals. The planar magic-T has a bandwidth of 30.3% (28–38 GHz), when the difference port and the sum port are excited, the insertion loss of the magic-T is less than −3.26 dB. The isolation between the sum/difference ports and the two input ports is better than 40 and 20 dB. As for the in-phase and out-of-phase excitation, the phase characteristics are close to the ideal 180° and 0° with only ±1.4° deviation across the band from 28 GHz to 38 GHz, the amplitude imbalances are less than ±0.05 dB.
{"title":"Design of a Ka-Band Planar Magic-T Based on modified Gysel Structure","authors":"Jiaming Chen, Tianqing Ling","doi":"10.1109/APSAR46974.2019.9048405","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048405","url":null,"abstract":"In this paper, a Ka-band magic-T based on the modified structure of Gysel power divider is proposed. Due to the symmetrical structure, two equal in-phase outputs are achieved. The signal applied to the difference port, is split by an additional half-wavelength branch into two equal out-of-phase signals. The planar magic-T has a bandwidth of 30.3% (28–38 GHz), when the difference port and the sum port are excited, the insertion loss of the magic-T is less than −3.26 dB. The isolation between the sum/difference ports and the two input ports is better than 40 and 20 dB. As for the in-phase and out-of-phase excitation, the phase characteristics are close to the ideal 180° and 0° with only ±1.4° deviation across the band from 28 GHz to 38 GHz, the amplitude imbalances are less than ±0.05 dB.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"25 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":"126017029","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}
Pub Date : 2019-11-01DOI: 10.1109/APSAR46974.2019.9048447
He Huang, Penghui Huang, Xingzhao Liu, Robert Wang, Junli Chen, Yanyang Liu
Due to the constraint of the minimum antenna restriction, there is an irreconcilable contradiction between high resolution and wide swath (HRWS) in a single-channel spaceborne synthetic aperture radar (SAR) system. To address this contradiction, the use of azimuth multichannel system can effectively realize the HRWS SAR imaging by taking the beam forming techniques. In this paper, a novel unambiguous spectrum reconstruction algorithm for space-borne multichannel HRWS SAR imaging is proposed. The proposed method firstly compensates the linear phase structure related to the along-track baseline in the Doppler domain. Then, the covariance matrix is reconstructed along azimuth direction based on adaptive iterative algorithm (IAA). Hence, based on the estimated covariance matrix, an unambiguous signal spectrum can be accurately restored according to the linearly constrained minimum variance (LCMV) criterion. Finally, a well-focused HRWS SAR image can be obtained by applying the typical SAR image algorithm. The major advantage of the proposed method is that it can realize the azimuth ambiguity elimination in a non-homogeneous scene. Both simulated and real data processing results are used to validate the effectiveness of the proposed method.
{"title":"A Novel Unambiguous Spectrum Reconstruction Algorithm for Space-borne High Resolution and Wide Swath SAR Imaging Based on Iterative Adaptive Algorithm","authors":"He Huang, Penghui Huang, Xingzhao Liu, Robert Wang, Junli Chen, Yanyang Liu","doi":"10.1109/APSAR46974.2019.9048447","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048447","url":null,"abstract":"Due to the constraint of the minimum antenna restriction, there is an irreconcilable contradiction between high resolution and wide swath (HRWS) in a single-channel spaceborne synthetic aperture radar (SAR) system. To address this contradiction, the use of azimuth multichannel system can effectively realize the HRWS SAR imaging by taking the beam forming techniques. In this paper, a novel unambiguous spectrum reconstruction algorithm for space-borne multichannel HRWS SAR imaging is proposed. The proposed method firstly compensates the linear phase structure related to the along-track baseline in the Doppler domain. Then, the covariance matrix is reconstructed along azimuth direction based on adaptive iterative algorithm (IAA). Hence, based on the estimated covariance matrix, an unambiguous signal spectrum can be accurately restored according to the linearly constrained minimum variance (LCMV) criterion. Finally, a well-focused HRWS SAR image can be obtained by applying the typical SAR image algorithm. The major advantage of the proposed method is that it can realize the azimuth ambiguity elimination in a non-homogeneous scene. Both simulated and real data processing results are used to validate the effectiveness of the proposed method.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"27 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":"126034740","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}
Pub Date : 2019-11-01DOI: 10.1109/APSAR46974.2019.9048473
Jie Liu, W. Tan, Pingping Huang, W. Xu, Zhiqi Gao, Chufeng Hu
The detection of high-voltage power lines plays an important role in helicopter flight safety. Firstly, geometric model of high voltage power lines is established, and its Bragg scattering characteristics are introduced through theoretical analysis. Then, Radar Cross Section (RCS) of the high voltage line is simulated in millimeter wave band, and the Bragg scattering pattern is obtained, Bragg scattering characteristics of the high voltage line varying with frequency are analyzed. Finally, we compare full polarization scattering characteristics of the high voltage power line at 35 GHz with 94 GHz, and analyze the reflection characteristics of circular polarized waves by cylinders and high voltage lines.
{"title":"Analysis of the Backscattering of Power Lines at Millimeter-Wave Frequencies","authors":"Jie Liu, W. Tan, Pingping Huang, W. Xu, Zhiqi Gao, Chufeng Hu","doi":"10.1109/APSAR46974.2019.9048473","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048473","url":null,"abstract":"The detection of high-voltage power lines plays an important role in helicopter flight safety. Firstly, geometric model of high voltage power lines is established, and its Bragg scattering characteristics are introduced through theoretical analysis. Then, Radar Cross Section (RCS) of the high voltage line is simulated in millimeter wave band, and the Bragg scattering pattern is obtained, Bragg scattering characteristics of the high voltage line varying with frequency are analyzed. Finally, we compare full polarization scattering characteristics of the high voltage power line at 35 GHz with 94 GHz, and analyze the reflection characteristics of circular polarized waves by cylinders and high voltage lines.","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":"129724896","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}
Pub Date : 2019-11-01DOI: 10.1109/APSAR46974.2019.9048354
X. Mao, Tianyue Shi, Lan Ding
Filtered backprojection (FBP) algorithm is a popular choice for nonlinear trajectory SAR image formation processing. However, how to efficiently autofocus the defocused FBP imagery is still a challenging problem. In this paper, a new interpretation of the FBP derivation is presented. Then, by incorporating the a priori knowledge on the 2-D phase error, an accurate and efficient 2-D autofocus approach is proposed. The new approach possesses much higher accuracy and efficiency than conventional blind methods. Experimental results clearly demonstrate the effectiveness and robustness of the proposed method.
{"title":"Two-dimensional Autofocus for SAR Filtered Backprojection Imagery","authors":"X. Mao, Tianyue Shi, Lan Ding","doi":"10.1109/APSAR46974.2019.9048354","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048354","url":null,"abstract":"Filtered backprojection (FBP) algorithm is a popular choice for nonlinear trajectory SAR image formation processing. However, how to efficiently autofocus the defocused FBP imagery is still a challenging problem. In this paper, a new interpretation of the FBP derivation is presented. Then, by incorporating the a priori knowledge on the 2-D phase error, an accurate and efficient 2-D autofocus approach is proposed. The new approach possesses much higher accuracy and efficiency than conventional blind methods. Experimental results clearly demonstrate the effectiveness and robustness of the proposed method.","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":"129289376","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}
Pub Date : 2019-11-01DOI: 10.1109/APSAR46974.2019.9048480
J. Gong
Unmanned Aerial Vehicle (UAV) has been taken seriously by all the mighty military countries since it birthed. Synthetic Aperture Radar (SAR) has become one of the most important payload for UAV due to its good performance. In this context, this paper designs a standard embedded parallel UAV borne SAR Integrated Electronic system with multi functional modules integrated, Introduced the radar integrated electronic system and key module design universality, highly real-time and good scalability by using the standard 3U VPX architecture and the star topology based on the switch chips for the flexible interaction of data, Use results indicate it is suitable for small and light unmanned flight platforms.
{"title":"Development of Integrated Electronic System for SAR based on UAV","authors":"J. Gong","doi":"10.1109/APSAR46974.2019.9048480","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048480","url":null,"abstract":"Unmanned Aerial Vehicle (UAV) has been taken seriously by all the mighty military countries since it birthed. Synthetic Aperture Radar (SAR) has become one of the most important payload for UAV due to its good performance. In this context, this paper designs a standard embedded parallel UAV borne SAR Integrated Electronic system with multi functional modules integrated, Introduced the radar integrated electronic system and key module design universality, highly real-time and good scalability by using the standard 3U VPX architecture and the star topology based on the switch chips for the flexible interaction of data, Use results indicate it is suitable for small and light unmanned flight platforms.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"114 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":"128276485","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}
Pub Date : 2019-11-01DOI: 10.1109/apsar46974.2019.9048584
Zhang Xin, Liu Bo, Liu Guangting, Lin Chenchen, Nie Shikang, Liu Xin
The trajectory for the geosynchronous synthetic aperture radar (GEO SAR) is complicated and the ship target moving combines not only translational motion but also 3-D rotate with the different state of the sea, the echo simulation of ship target in the unified coordinate system be-come a vital problem. A new method for the echo simulation in the ship coordinate system is presented. This meth-od can simulate the real geometry of satellite and earth; ship moving, as well as the rotate (yaw, pitch, roll) in dif-ferent state of the sea. The effectiveness is verified through theoretical and simulation of ISAR imaging. It is a foundation in following the imaging of the ship target for GEO SAR.
{"title":"Echo simulation method of ship target for Geosynchronous SAR","authors":"Zhang Xin, Liu Bo, Liu Guangting, Lin Chenchen, Nie Shikang, Liu Xin","doi":"10.1109/apsar46974.2019.9048584","DOIUrl":"https://doi.org/10.1109/apsar46974.2019.9048584","url":null,"abstract":"The trajectory for the geosynchronous synthetic aperture radar (GEO SAR) is complicated and the ship target moving combines not only translational motion but also 3-D rotate with the different state of the sea, the echo simulation of ship target in the unified coordinate system be-come a vital problem. A new method for the echo simulation in the ship coordinate system is presented. This meth-od can simulate the real geometry of satellite and earth; ship moving, as well as the rotate (yaw, pitch, roll) in dif-ferent state of the sea. The effectiveness is verified through theoretical and simulation of ISAR imaging. It is a foundation in following the imaging of the ship target for GEO SAR.","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":"131302131","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}
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