Pub Date : 2019-11-01DOI: 10.1109/APSAR46974.2019.9048317
You Wu, Q. Yin, Fan Zhang
Polarimetric Synthetic Aperture Radar (PolSAR) can obtain ground polarization information by transmitting and receiving polarized waves. The polarization information of the ground soil can be inverted to the moisture and roughness information by the empirical models. With the massive increase of PolSAR data, the demand for efficient processing is gradually growing. In this paper, a GPU based surface parameter parallel inversion method is proposed to solve this issue in quantitative remote sensing. This paper improves computational efficiency by using instruction set optimization, algorithm redundancy optimization, and fast numerical operations. The experimental results show that the method can realize approximately 100 times faster than the original serial version on CPU. If only the calculation part is considered, the method should achieve more than 1000 times acceleration.
{"title":"GPU-Based Soil Parameter Parallel Inversion for PolSAR Imagery","authors":"You Wu, Q. Yin, Fan Zhang","doi":"10.1109/APSAR46974.2019.9048317","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048317","url":null,"abstract":"Polarimetric Synthetic Aperture Radar (PolSAR) can obtain ground polarization information by transmitting and receiving polarized waves. The polarization information of the ground soil can be inverted to the moisture and roughness information by the empirical models. With the massive increase of PolSAR data, the demand for efficient processing is gradually growing. In this paper, a GPU based surface parameter parallel inversion method is proposed to solve this issue in quantitative remote sensing. This paper improves computational efficiency by using instruction set optimization, algorithm redundancy optimization, and fast numerical operations. The experimental results show that the method can realize approximately 100 times faster than the original serial version on CPU. If only the calculation part is considered, the method should achieve more than 1000 times acceleration.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"14 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":"114787024","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/apsar46974.2019.9048483
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/APSAR46974.2019.9048389
Jianghong Han, Gang Li, Xiao-Ping Zhang
In this paper, we present a new scheme of adaptive quantization thresholds for one-bit radar imaging based on adversarial samples. Radar imaging with one-bit compressive sensing (CS) is attractive due to the small storage burden and low requirements to the analog-to-digital converter. However, conventional one-bit quantization scheme with fixed thresholds does not use the magnitude information, possibly leading to difficulty in energy estimation and higher amplitude recovery error. Recently, adaptive thresholds methods have been developed to deal with the limitation of fixed thresholds scheme. Based on the adversarial training theory, the proposed new method embeds adversarial samples into the binary iterative hard thresholding (BIHT) algorithm and exploits an adaptive thresholds scheme based on the adversarial samples to improve the model robustness and imaging quality with one-bit coded data. Simulation results demonstrate that the proposed method outperforms the BIHT with fixed thresholds in one-bit radar imaging.
{"title":"Design of Adaptive Thresholds For One-Bit Radar Imaging Based on Adversarial Samples","authors":"Jianghong Han, Gang Li, Xiao-Ping Zhang","doi":"10.1109/APSAR46974.2019.9048389","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048389","url":null,"abstract":"In this paper, we present a new scheme of adaptive quantization thresholds for one-bit radar imaging based on adversarial samples. Radar imaging with one-bit compressive sensing (CS) is attractive due to the small storage burden and low requirements to the analog-to-digital converter. However, conventional one-bit quantization scheme with fixed thresholds does not use the magnitude information, possibly leading to difficulty in energy estimation and higher amplitude recovery error. Recently, adaptive thresholds methods have been developed to deal with the limitation of fixed thresholds scheme. Based on the adversarial training theory, the proposed new method embeds adversarial samples into the binary iterative hard thresholding (BIHT) algorithm and exploits an adaptive thresholds scheme based on the adversarial samples to improve the model robustness and imaging quality with one-bit coded data. Simulation results demonstrate that the proposed method outperforms the BIHT with fixed thresholds in one-bit radar imaging.","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":"115508936","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/APSAR46974.2019.9048322
Hao Wu
SAR (Synthetic Aperture Radar) satellites can perform reconnaissance on specific areas in all directions. Generally speaking, the scope of reconnaissance is smaller than that of passive reconnaissance. Therefore, orbit and constellation design are more important. Here we use the maximum coverage gap to measure the reconnaissance efficiency of the SAR satellite constellation and the simulation technology is studied. The results show that the change of orbital inclination has a great influence on the maximum revisit interval. The visible range of SAR satellite has a great influence on the maximum revisit interval, as well as the number of orbital planes. Based on this method, the simulation of the space-borne SAR is carried out. The orbit design and optimization of reconnaissance mission design scheme can provide a convenient and effective support platform for the simulation analysis of space-borne SAR missions.
{"title":"Simulation Technology of Spaceborne SAR Reconnaissance Effeciency","authors":"Hao Wu","doi":"10.1109/APSAR46974.2019.9048322","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048322","url":null,"abstract":"SAR (Synthetic Aperture Radar) satellites can perform reconnaissance on specific areas in all directions. Generally speaking, the scope of reconnaissance is smaller than that of passive reconnaissance. Therefore, orbit and constellation design are more important. Here we use the maximum coverage gap to measure the reconnaissance efficiency of the SAR satellite constellation and the simulation technology is studied. The results show that the change of orbital inclination has a great influence on the maximum revisit interval. The visible range of SAR satellite has a great influence on the maximum revisit interval, as well as the number of orbital planes. Based on this method, the simulation of the space-borne SAR is carried out. The orbit design and optimization of reconnaissance mission design scheme can provide a convenient and effective support platform for the simulation analysis of space-borne SAR missions.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"35 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":"115990616","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/APSAR46974.2019.9048347
Wei Yilin, Sun Bing, Liu Liwen
As an important technology in the field of precise guidance, platform positioning technology based on SAR image matching has many advantages such as all-weather, all-time capabilities and no time cumulative error. However, the existence of various interference factors causes positioning errors. This paper concentrates on the analysis of platform positioning error based on SAR image matching, which provides significant engineering reference for platform positioning error correction. On the basis of the principle of SAR platform positioning technology, the factors influencing the platform positioning errors are sorted out. Then, the positioning error law of direct interference factors is derived, based which the platform positioning error correction method comes up innovatively. Further, the simulations for direct interference factors are carried out, which verify that the results are consistent with the theoretical assumptions and the positioning error can be corrected accurately by the correction method.
{"title":"Error Analysis of Platform Positioning Based on SAR Image Matching","authors":"Wei Yilin, Sun Bing, Liu Liwen","doi":"10.1109/APSAR46974.2019.9048347","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048347","url":null,"abstract":"As an important technology in the field of precise guidance, platform positioning technology based on SAR image matching has many advantages such as all-weather, all-time capabilities and no time cumulative error. However, the existence of various interference factors causes positioning errors. This paper concentrates on the analysis of platform positioning error based on SAR image matching, which provides significant engineering reference for platform positioning error correction. On the basis of the principle of SAR platform positioning technology, the factors influencing the platform positioning errors are sorted out. Then, the positioning error law of direct interference factors is derived, based which the platform positioning error correction method comes up innovatively. Further, the simulations for direct interference factors are carried out, which verify that the results are consistent with the theoretical assumptions and the positioning error can be corrected accurately by the correction method.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"83 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":"115426530","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/APSAR46974.2019.9048257
Zhenning Zhang, Weidong Yu, M. Zheng, Zi-Xuan Zhou, Huimin Zheng
In multichannel synthetic aperture radar (SAR) Ground Moving Target Indication (GMTI) systems, Doppler centroid (DC) is an essential parameter for spectral reconstruction and image focusing. However, conventional DC estimator for stationary scene faces many problems in moving target with multichannel SAR, such as low sampling rate and channels selection. To estimate the baseband DC of moving target, a modified CDE method for multichannel SAR GMTI system is proposed in this paper. Simulation results demonstrate the effectiveness of this method.
{"title":"Baseband Doppler Centroid Estimation for Ground Moving Target with Multichannel SAR","authors":"Zhenning Zhang, Weidong Yu, M. Zheng, Zi-Xuan Zhou, Huimin Zheng","doi":"10.1109/APSAR46974.2019.9048257","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048257","url":null,"abstract":"In multichannel synthetic aperture radar (SAR) Ground Moving Target Indication (GMTI) systems, Doppler centroid (DC) is an essential parameter for spectral reconstruction and image focusing. However, conventional DC estimator for stationary scene faces many problems in moving target with multichannel SAR, such as low sampling rate and channels selection. To estimate the baseband DC of moving target, a modified CDE method for multichannel SAR GMTI system is proposed in this paper. Simulation results demonstrate the effectiveness of this method.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"9 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":"122272638","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/APSAR46974.2019.9048268
Yu Guo, Wei Yang, Jie Chen, Chunsheng Li, Xiaokun Sun
Azimuth multi-channels is widely used for high-resolution and wide-swath recently, especially for the purpose of interferometry processing. However, due to the reconstruction of non-uniformly azimuth signal, the classical phase-preserving algorithm does not work well. In this paper, a phase-preserving imaging algorithm for azimuth multi-channel spaceborne SAR data processing is proposed. Firstly, combined with the reconstruction operation, the effect on phase-preserving accuracy is analyzed in detail, with the discussion of the equivalent phase center position. Then, the novel phase-preserving algorithm is addressed, which can accurately compensate the phase errors, including the constant phase term, the linear phase term introduced by the shifting zero-Doppler frequency, the residual cubic phase error along range direction, and the nonuniform sampling phase error after range-compression. Finally, simulation results verify the effectiveness of the proposed algorithm.
{"title":"A phase-preserving imaging algorithm for azimuth multi-channel spaceborne SAR data processing","authors":"Yu Guo, Wei Yang, Jie Chen, Chunsheng Li, Xiaokun Sun","doi":"10.1109/APSAR46974.2019.9048268","DOIUrl":"https://doi.org/10.1109/APSAR46974.2019.9048268","url":null,"abstract":"Azimuth multi-channels is widely used for high-resolution and wide-swath recently, especially for the purpose of interferometry processing. However, due to the reconstruction of non-uniformly azimuth signal, the classical phase-preserving algorithm does not work well. In this paper, a phase-preserving imaging algorithm for azimuth multi-channel spaceborne SAR data processing is proposed. Firstly, combined with the reconstruction operation, the effect on phase-preserving accuracy is analyzed in detail, with the discussion of the equivalent phase center position. Then, the novel phase-preserving algorithm is addressed, which can accurately compensate the phase errors, including the constant phase term, the linear phase term introduced by the shifting zero-Doppler frequency, the residual cubic phase error along range direction, and the nonuniform sampling phase error after range-compression. Finally, simulation results verify the effectiveness of the proposed algorithm.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"48 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":"122474504","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/apsar46974.2019.9048458
Zheng Zhao, Weiming Tian, Y. Deng, T. Zeng
Ground-based interferometric synthetic aperture radar (GB-InSAR) technology is becoming an important terrain mapping technology as it has the characteristics of short observation intervals, flexible operation environment and high data precision. Compared with air/space borne InSAR system, GB-InSAR has a wide beam, a scene breadth comparative to the slant range, and a large downwards-looking angle. The observation scenes always show the type of slope terrain with various gradients and slope orientations. Those particularities will bring new problems in DEM generation method and interferogram processing during its typical applications. Among them, the interferogram gaps caused by the shadow and weak reflections are always appear in mountainous or open-pit areas. Thus, in order to make the full use of the interferogram, a modified phase compensation and phase unwrapping method are proposed. Besides, the DEM generation method also need modification to adapt with the huge-azimuth, short-range area. In Section IV, the experimental results are shown to give a specific description of GB-InSAR applications characteristics and verifying the correctness and effectiveness of the proposed method.
{"title":"GB-InSAR Special Issues during its Applications on DEM Generation","authors":"Zheng Zhao, Weiming Tian, Y. Deng, T. Zeng","doi":"10.1109/apsar46974.2019.9048458","DOIUrl":"https://doi.org/10.1109/apsar46974.2019.9048458","url":null,"abstract":"Ground-based interferometric synthetic aperture radar (GB-InSAR) technology is becoming an important terrain mapping technology as it has the characteristics of short observation intervals, flexible operation environment and high data precision. Compared with air/space borne InSAR system, GB-InSAR has a wide beam, a scene breadth comparative to the slant range, and a large downwards-looking angle. The observation scenes always show the type of slope terrain with various gradients and slope orientations. Those particularities will bring new problems in DEM generation method and interferogram processing during its typical applications. Among them, the interferogram gaps caused by the shadow and weak reflections are always appear in mountainous or open-pit areas. Thus, in order to make the full use of the interferogram, a modified phase compensation and phase unwrapping method are proposed. Besides, the DEM generation method also need modification to adapt with the huge-azimuth, short-range area. In Section IV, the experimental results are shown to give a specific description of GB-InSAR applications characteristics and verifying the correctness and effectiveness of the proposed method.","PeriodicalId":377019,"journal":{"name":"2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"52 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":"128952775","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}
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