Pub Date : 2015-10-29DOI: 10.1109/APSAR.2015.7306233
Shuang-xi Zhang, Yong-xin Guo, C. Goh, M. Xing
Similar to the conventional synthetic aperture radar (SAR) imaging processing, the estimation of Doppler chirp rate is one key problem for the multi-channel in azimuth high-resolution and wide-swath (HRWS) SAR system. At the same time, the accurate estimation of baseline in azimuth is also important for the reconstruction of ambiguity-free Doppler spectrum. In this paper, based on the Map Drift algorithm and correlation function approach, a novel Doppler chirp rate estimation approach in time domain is proposed for the multichannel in azimuth HRWS SAR system. Furthermore, a baseline length in azimuth estimation algorithm is developed from the proposed Doppler chirp rate method, which is based on the correlation function between the echoes of adjective channels. The proposed approaches are successfully applied to process the real five-channel HRWS SAR echo and the good performance is demonstrated.
{"title":"A novel Doppler chirp rate and baseline estimation approach in time domain for multi-channel in azimuth HRWS SAR system","authors":"Shuang-xi Zhang, Yong-xin Guo, C. Goh, M. Xing","doi":"10.1109/APSAR.2015.7306233","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306233","url":null,"abstract":"Similar to the conventional synthetic aperture radar (SAR) imaging processing, the estimation of Doppler chirp rate is one key problem for the multi-channel in azimuth high-resolution and wide-swath (HRWS) SAR system. At the same time, the accurate estimation of baseline in azimuth is also important for the reconstruction of ambiguity-free Doppler spectrum. In this paper, based on the Map Drift algorithm and correlation function approach, a novel Doppler chirp rate estimation approach in time domain is proposed for the multichannel in azimuth HRWS SAR system. Furthermore, a baseline length in azimuth estimation algorithm is developed from the proposed Doppler chirp rate method, which is based on the correlation function between the echoes of adjective channels. The proposed approaches are successfully applied to process the real five-channel HRWS SAR echo and the good performance is demonstrated.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"23 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":"134400327","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 : 2015-10-29DOI: 10.1109/APSAR.2015.7306176
Songtao Zhao, Jie Chen, Wei Yang, Bing Sun, Yamin Wang
Spaceborne Video SAR imaging mode is a new imaging mode of SAR (Synthetic Aperture Radar), it is different from the traditional imaging mode. Operating in this mode, SAR provides continuous surveillance over a region of interest. Sequence images are processed afterwards and the information of the region is reappeared using video formed by sequence images. Obviously, this will bring many advantages for detecting and tracking moving-targets over the region of interest. Therefore, in this paper, the concept of spaceborne Video SAR is introduced at first, then the performances of spaceborne Video SAR, such as data process methodology, resolution and frame rate are discussed. Based on the above analysis, a modified Deramp Chirp Scaling (DCS) algorithm with an extra phase compensation factor is proposed to deal with spaceborne Video SAR data.
{"title":"Image formation method for spaceborne video SAR","authors":"Songtao Zhao, Jie Chen, Wei Yang, Bing Sun, Yamin Wang","doi":"10.1109/APSAR.2015.7306176","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306176","url":null,"abstract":"Spaceborne Video SAR imaging mode is a new imaging mode of SAR (Synthetic Aperture Radar), it is different from the traditional imaging mode. Operating in this mode, SAR provides continuous surveillance over a region of interest. Sequence images are processed afterwards and the information of the region is reappeared using video formed by sequence images. Obviously, this will bring many advantages for detecting and tracking moving-targets over the region of interest. Therefore, in this paper, the concept of spaceborne Video SAR is introduced at first, then the performances of spaceborne Video SAR, such as data process methodology, resolution and frame rate are discussed. Based on the above analysis, a modified Deramp Chirp Scaling (DCS) algorithm with an extra phase compensation factor is proposed to deal with spaceborne Video SAR data.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"134 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":"131994617","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 : 2015-10-29DOI: 10.1109/APSAR.2015.7306266
Jung-Hwan Song, Woo-Kyung Lee, C. Jung
In this paper, a novel high resolution inverse synthetic aperture radar (ISAR) processing technique is proposed. The proposed method employs sub-aperture recombination scheme such that target features can be effectively preserved even for wide aperture data. The proposed ISAR-to-SAR approach is introduced and Doppler history based motion compensation is described. In order to evaluate the proposed algorithm in real environment, we developed an experimental ISAR system. The proposed algorithm is implemented in system hardware and ground processor to apply to the generated ISAR data. Extensive field works have been conducted to obtain the ISAR raw data of aircraft target and the results are finally suggested in detail.
{"title":"High resolution ISAR processing using real data: ISAR-to-SAR approach","authors":"Jung-Hwan Song, Woo-Kyung Lee, C. Jung","doi":"10.1109/APSAR.2015.7306266","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306266","url":null,"abstract":"In this paper, a novel high resolution inverse synthetic aperture radar (ISAR) processing technique is proposed. The proposed method employs sub-aperture recombination scheme such that target features can be effectively preserved even for wide aperture data. The proposed ISAR-to-SAR approach is introduced and Doppler history based motion compensation is described. In order to evaluate the proposed algorithm in real environment, we developed an experimental ISAR system. The proposed algorithm is implemented in system hardware and ground processor to apply to the generated ISAR data. Extensive field works have been conducted to obtain the ISAR raw data of aircraft target and the results are finally suggested in detail.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"44 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":"114297369","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}
A novel multi-targets ISAR imaging method based on particle swarm optimization (PSO) and modified CLEAN technique is proposed in this paper. First, multi-targets are modeled as several separated group-targets in which translational motion of each target is analogous. And then, translational motion of each group-target is modeled as a polynomial, and the polynomial coefficient is estimated via PSO. Then focused image of the group-target can be obtained and extracted via a modified CLEAN technique. Meanwhile, each target can be segmented and extracted based on clustering number estimation and K-means clustering algorithm. Finally, better focused image of each target would be obtained through further traditional mono-target imaging processing. Experimental results verify the validity of the proposed method.
{"title":"A novel method for multi-targets ISAR imaging","authors":"Lei Liu, Feng Zhou, Yongqiang Guo, Mingliang Tao, Pange Sun, Zi-jing Zhang","doi":"10.1109/APSAR.2015.7306216","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306216","url":null,"abstract":"A novel multi-targets ISAR imaging method based on particle swarm optimization (PSO) and modified CLEAN technique is proposed in this paper. First, multi-targets are modeled as several separated group-targets in which translational motion of each target is analogous. And then, translational motion of each group-target is modeled as a polynomial, and the polynomial coefficient is estimated via PSO. Then focused image of the group-target can be obtained and extracted via a modified CLEAN technique. Meanwhile, each target can be segmented and extracted based on clustering number estimation and K-means clustering algorithm. Finally, better focused image of each target would be obtained through further traditional mono-target imaging processing. Experimental results verify the validity of the proposed method.","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":"132753339","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 : 2015-10-29DOI: 10.1109/APSAR.2015.7306146
Hao-jie Zhang, Jie Chen, Hongcheng Zeng, Wei Yang, Jingwen Li
In order to improve the radiometric precision of Synthetic Aperture Radar (SAR) image, this paper analyses the power-loss of SAR raw data which is caused by block adaptive quantization (BAQ) and then proposed a compensation method. Firstly, the saturation factor γclip is defined and then a unified model of BAQ compression is proposed by using the concept of normalized quantizer. Secondly, the signal expression during BAQ procedure is deduced under the unified model and some important parameters are expressed as a function of γclip. Thirdly, a one-to-one relationship between saturation degree and power-loss of compressed data is established through γclip, the corresponding compensation method is proposed as well. Experiment results based on simulated data prove the correctness of theoretical relationship and the validity of the compensation method.
{"title":"The impact of block adaptive quantization algorithm on power-loss with SAR raw data","authors":"Hao-jie Zhang, Jie Chen, Hongcheng Zeng, Wei Yang, Jingwen Li","doi":"10.1109/APSAR.2015.7306146","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306146","url":null,"abstract":"In order to improve the radiometric precision of Synthetic Aperture Radar (SAR) image, this paper analyses the power-loss of SAR raw data which is caused by block adaptive quantization (BAQ) and then proposed a compensation method. Firstly, the saturation factor γclip is defined and then a unified model of BAQ compression is proposed by using the concept of normalized quantizer. Secondly, the signal expression during BAQ procedure is deduced under the unified model and some important parameters are expressed as a function of γclip. Thirdly, a one-to-one relationship between saturation degree and power-loss of compressed data is established through γclip, the corresponding compensation method is proposed as well. Experiment results based on simulated data prove the correctness of theoretical relationship and the validity of the compensation method.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"65 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":"125874453","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 : 2015-10-29DOI: 10.1109/APSAR.2015.7306165
M. Baharuddin, B. Setiadi, J. Sumantyo, H. Kuze
Earth observation from airborne and spaceborne platforms using synthetic aperture radar (SAR) has provided scientists and researchers with a deeper understanding of the planet for geological studies, weather forecasting, and disaster mitigation, among others. Aiming to develop our own spaceborne synthetic aperture radar for the purpose of environmental remote sensing, we have a program to test our system subcomponents on airborne and ground based systems. This paper presents the design and testing of a wideband inverse synthetic aperture radar (ISAR) system. This work will lead to the investigation of generating images from circularly polarized (CP) transmits and receive signals, improvement of related imaging algorithms for CP signals and suitable antenna design. Data measurement setup was constructed in an anechoic chamber with the use of a vector network analyzer (VNA) and automated rotary turntable to mount targets.
{"title":"An experimental network analyzer based ISAR system for studying SAR fundamentals","authors":"M. Baharuddin, B. Setiadi, J. Sumantyo, H. Kuze","doi":"10.1109/APSAR.2015.7306165","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306165","url":null,"abstract":"Earth observation from airborne and spaceborne platforms using synthetic aperture radar (SAR) has provided scientists and researchers with a deeper understanding of the planet for geological studies, weather forecasting, and disaster mitigation, among others. Aiming to develop our own spaceborne synthetic aperture radar for the purpose of environmental remote sensing, we have a program to test our system subcomponents on airborne and ground based systems. This paper presents the design and testing of a wideband inverse synthetic aperture radar (ISAR) system. This work will lead to the investigation of generating images from circularly polarized (CP) transmits and receive signals, improvement of related imaging algorithms for CP signals and suitable antenna design. Data measurement setup was constructed in an anechoic chamber with the use of a vector network analyzer (VNA) and automated rotary turntable to mount targets.","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":"129617559","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 : 2015-10-29DOI: 10.1109/APSAR.2015.7306295
R. Thapa, Manabu Watanabe, T. Motohka, M. Shimada
Retrieving aboveground forest carbon stocks (AFCS) accurately in tropical region remains challenging due to forest structure complexity and species diversity. In order to improve AFCS estimates, the present study evaluates the potential of high-resolution ALOS/PALSAR mosaics data in the tropical forests in central Sumatra. The study region with AFCS range of 1 to 334 Mg ha-1 consists of natural and plantation forests. Field measurements of AFCS were carried out in 87 plots. Various textures of dual polarized mosaics data for the year 2009 and 2010 were computed and assessed their potential for estimating AFCS applying regression modelling. R2, p-value, variable inflation factor, and root mean square errors (RMSE) were examined. Potential models were cross validated by leave- one-out (LOO) method. The result indicates that simple textures analysis in PALSAR mosaics increases potential of AFCS estimation and reduces errors to 30.5 Mg ha-1. The method and models presented in this study can be a low cost wall-to-wall forest carbon mapping with high level of accuracy in tropical forests in Southeast Asia where other methods are still rare.
{"title":"Texture analysis of PALSAR mosaics for forests carbon stock estimation in central Sumatra","authors":"R. Thapa, Manabu Watanabe, T. Motohka, M. Shimada","doi":"10.1109/APSAR.2015.7306295","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306295","url":null,"abstract":"Retrieving aboveground forest carbon stocks (AFCS) accurately in tropical region remains challenging due to forest structure complexity and species diversity. In order to improve AFCS estimates, the present study evaluates the potential of high-resolution ALOS/PALSAR mosaics data in the tropical forests in central Sumatra. The study region with AFCS range of 1 to 334 Mg ha-1 consists of natural and plantation forests. Field measurements of AFCS were carried out in 87 plots. Various textures of dual polarized mosaics data for the year 2009 and 2010 were computed and assessed their potential for estimating AFCS applying regression modelling. R2, p-value, variable inflation factor, and root mean square errors (RMSE) were examined. Potential models were cross validated by leave- one-out (LOO) method. The result indicates that simple textures analysis in PALSAR mosaics increases potential of AFCS estimation and reduces errors to 30.5 Mg ha-1. The method and models presented in this study can be a low cost wall-to-wall forest carbon mapping with high level of accuracy in tropical forests in Southeast Asia where other methods are still rare.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"31 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":"129455296","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 : 2015-10-29DOI: 10.1109/APSAR.2015.7306160
Weixian Liu, H. Feng
Polarimetric and interferometric SAR is the combination of PolSAR and InSAR. In [5], a general formulation is derived for coherent interferometry using polarized waves. Based on this formulation, the coherence optimization problem can be solved to obtain the optimum scattering mechanisms that lead to the best phase estimates. In this work, the PSO algorithm is employed to improve the SAR interferometry coherence optimization.
{"title":"Study of the polarimetric SAR interferometry coherence optimization","authors":"Weixian Liu, H. Feng","doi":"10.1109/APSAR.2015.7306160","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306160","url":null,"abstract":"Polarimetric and interferometric SAR is the combination of PolSAR and InSAR. In [5], a general formulation is derived for coherent interferometry using polarized waves. Based on this formulation, the coherence optimization problem can be solved to obtain the optimum scattering mechanisms that lead to the best phase estimates. In this work, the PSO algorithm is employed to improve the SAR interferometry coherence optimization.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"33 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":"122785204","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 : 2015-10-29DOI: 10.1109/APSAR.2015.7306212
T. Zeng, Cong Mao, Cheng Hu, Xiaopeng Yang, Weiming Tian
Herein is proposed a novel high-steep rock slope landslide monitoring system based on the configuration of multi-static multiple-input multiple-output synthetic aperture radar (MIMO-SAR). In this system, three spastically distributed radars are employed. Each is a Ku-band MIMO-SAR, transmitting mutually orthogonal waveforms and sensing the slope movement from different view angles. The three radars can then achieve the deform measurements in the three line of sight (LOS) directions. After an effective fusion of these measurements, the deform vector, with direction and amount, can be resolved. This vector is particularly important for risk warning as well as for understanding the motion mechanism of landslide. Moreover, the data acquisition period can be largely reduced, since the use of MIMO radar allows a simultaneous sampling of the scene echo. The time decorrelation is therefore very small, and hence high measurement accuracy can be expected. It can be proved that, using this system, the three-dimensional accuracy can reach 0.1 ~ 1 mm. Simulations and experimental datasets are used to validate this proposal.
{"title":"Multi-static MIMO-SAR three dimensional deformation measurement system","authors":"T. Zeng, Cong Mao, Cheng Hu, Xiaopeng Yang, Weiming Tian","doi":"10.1109/APSAR.2015.7306212","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306212","url":null,"abstract":"Herein is proposed a novel high-steep rock slope landslide monitoring system based on the configuration of multi-static multiple-input multiple-output synthetic aperture radar (MIMO-SAR). In this system, three spastically distributed radars are employed. Each is a Ku-band MIMO-SAR, transmitting mutually orthogonal waveforms and sensing the slope movement from different view angles. The three radars can then achieve the deform measurements in the three line of sight (LOS) directions. After an effective fusion of these measurements, the deform vector, with direction and amount, can be resolved. This vector is particularly important for risk warning as well as for understanding the motion mechanism of landslide. Moreover, the data acquisition period can be largely reduced, since the use of MIMO radar allows a simultaneous sampling of the scene echo. The time decorrelation is therefore very small, and hence high measurement accuracy can be expected. It can be proved that, using this system, the three-dimensional accuracy can reach 0.1 ~ 1 mm. Simulations and experimental datasets are used to validate this proposal.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"69 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113939521","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 : 2015-10-29DOI: 10.1109/APSAR.2015.7306182
J. Yaung, M. Shie, I. Tarn, Bor-Han Wu, Chih-Li Chang, Chia-Ray Chen, Szu-Hsien Yu, Po-Yaun Tong, Shiann-Jeng Yu, Chih-Yuan Chu
Taiwan Island was created by tectonic plate collision where the continent building is still active with numerous earthquake activities. Taiwan is also in one of the most prevalent monsoon and typhoon areas of the world. Monsoons and typhoons bring along heavy precipitation that produce significant threat of mud slide and land slide in the mountains. SAR satellite missions, with their advantages of all-weather capability, repeat pass, high spatial resolution and sufficient swath, can provide not only in-time coverage at disaster locations, but also environment monitoring, disasters assessment and resource survey. The images product will serve the needs of Taiwan government agencies first not only before and after the crises but also during the crises. However, the disasters management community users have been in shortage of timely low cost imaging data ever since the disasters management operations became effective. Thus, a low cost SAR satellite payload design effort has been initiated in NSPO (National Space Organization) with the satellites and key SAR technologies in Taiwan.
{"title":"An X-band SAR satellite payload design with low cost approach for disasters management","authors":"J. Yaung, M. Shie, I. Tarn, Bor-Han Wu, Chih-Li Chang, Chia-Ray Chen, Szu-Hsien Yu, Po-Yaun Tong, Shiann-Jeng Yu, Chih-Yuan Chu","doi":"10.1109/APSAR.2015.7306182","DOIUrl":"https://doi.org/10.1109/APSAR.2015.7306182","url":null,"abstract":"Taiwan Island was created by tectonic plate collision where the continent building is still active with numerous earthquake activities. Taiwan is also in one of the most prevalent monsoon and typhoon areas of the world. Monsoons and typhoons bring along heavy precipitation that produce significant threat of mud slide and land slide in the mountains. SAR satellite missions, with their advantages of all-weather capability, repeat pass, high spatial resolution and sufficient swath, can provide not only in-time coverage at disaster locations, but also environment monitoring, disasters assessment and resource survey. The images product will serve the needs of Taiwan government agencies first not only before and after the crises but also during the crises. However, the disasters management community users have been in shortage of timely low cost imaging data ever since the disasters management operations became effective. Thus, a low cost SAR satellite payload design effort has been initiated in NSPO (National Space Organization) with the satellites and key SAR technologies in Taiwan.","PeriodicalId":350698,"journal":{"name":"2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)","volume":"268 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":"132091574","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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