{"title":"欧空局突破性合成孔径雷达:ENVISAT-1 ASAR有源天线","authors":"R. Torres, C. Buck, J. Guijarro, J. Suchail","doi":"10.1109/APS.1999.788235","DOIUrl":null,"url":null,"abstract":"The Advanced Synthetic Aperture Radar (ASAR) is a major instrument on board ENVISAT-1. The next Earth observation mission of the European Space Agency. It will represent a sensor of paramount importance for the remote sensing community because of its enhanced flexibility with respect to the existing SARs in the AMI on board ERS-1 and ERS-2. The unique combination of different spatial resolutions, incidence angles, swath width sizes and polarisation diversity will offer an increased number of operational modes tailored for a large set of scientific and operational applications. Among the innovative design features of this radar are the use of an active antenna concept for tailoring the transmit and receive elevation beams to different mode geometries, a digital generation waveform technique for obtaining variable time-bandwidth products and a block adaptive quantization compression scheme. In this paper, the ASAR antenna is described and the development status is presented.","PeriodicalId":391546,"journal":{"name":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","volume":"21 Suppl 2 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1999-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"ESA's ground breaking synthetic aperture radar: the ENVISAT-1 ASAR active antenna\",\"authors\":\"R. Torres, C. Buck, J. Guijarro, J. Suchail\",\"doi\":\"10.1109/APS.1999.788235\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The Advanced Synthetic Aperture Radar (ASAR) is a major instrument on board ENVISAT-1. The next Earth observation mission of the European Space Agency. It will represent a sensor of paramount importance for the remote sensing community because of its enhanced flexibility with respect to the existing SARs in the AMI on board ERS-1 and ERS-2. The unique combination of different spatial resolutions, incidence angles, swath width sizes and polarisation diversity will offer an increased number of operational modes tailored for a large set of scientific and operational applications. Among the innovative design features of this radar are the use of an active antenna concept for tailoring the transmit and receive elevation beams to different mode geometries, a digital generation waveform technique for obtaining variable time-bandwidth products and a block adaptive quantization compression scheme. In this paper, the ASAR antenna is described and the development status is presented.\",\"PeriodicalId\":391546,\"journal\":{\"name\":\"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)\",\"volume\":\"21 Suppl 2 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1999-07-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/APS.1999.788235\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APS.1999.788235","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
ESA's ground breaking synthetic aperture radar: the ENVISAT-1 ASAR active antenna
The Advanced Synthetic Aperture Radar (ASAR) is a major instrument on board ENVISAT-1. The next Earth observation mission of the European Space Agency. It will represent a sensor of paramount importance for the remote sensing community because of its enhanced flexibility with respect to the existing SARs in the AMI on board ERS-1 and ERS-2. The unique combination of different spatial resolutions, incidence angles, swath width sizes and polarisation diversity will offer an increased number of operational modes tailored for a large set of scientific and operational applications. Among the innovative design features of this radar are the use of an active antenna concept for tailoring the transmit and receive elevation beams to different mode geometries, a digital generation waveform technique for obtaining variable time-bandwidth products and a block adaptive quantization compression scheme. In this paper, the ASAR antenna is described and the development status is presented.
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