{"title":"天宫二号干涉成像雷达高度计回波波形的推导与验证","authors":"W. Zhai, Yunhua Zhang, Guo Li","doi":"10.1109/APCAP.2018.8538232","DOIUrl":null,"url":null,"abstract":"We introduce the derivation and validation of the echo waveform model (EWM) for the ChineseTiangong-2 interferometric imaging radar altimeter (TG2-InIRA), which was launched on Sept. 152016. The TG2-InIRA adopts small incident angles from 1 to 8 degree and short interferometric baseline of 2.3m so as to realize high coherency measurement of radar scattering from sea surface aiming to retrieve three- dimensional ocean topography with centimeter-level accuracy. We derived the EWM by multiplication of the antenna pattern in range direction, the backscattering coefficient model and the system response function. Real in-orbit observation data has been used to validate the developed EWM and an initial wind speed retrieval algorithm is proposed.","PeriodicalId":198124,"journal":{"name":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Derivation and Validation of the Echo Waveform for the Chinese Tiangong-2 Interferometric Imaging Radar Altimeter\",\"authors\":\"W. Zhai, Yunhua Zhang, Guo Li\",\"doi\":\"10.1109/APCAP.2018.8538232\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We introduce the derivation and validation of the echo waveform model (EWM) for the ChineseTiangong-2 interferometric imaging radar altimeter (TG2-InIRA), which was launched on Sept. 152016. The TG2-InIRA adopts small incident angles from 1 to 8 degree and short interferometric baseline of 2.3m so as to realize high coherency measurement of radar scattering from sea surface aiming to retrieve three- dimensional ocean topography with centimeter-level accuracy. We derived the EWM by multiplication of the antenna pattern in range direction, the backscattering coefficient model and the system response function. Real in-orbit observation data has been used to validate the developed EWM and an initial wind speed retrieval algorithm is proposed.\",\"PeriodicalId\":198124,\"journal\":{\"name\":\"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2018-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/APCAP.2018.8538232\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APCAP.2018.8538232","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Derivation and Validation of the Echo Waveform for the Chinese Tiangong-2 Interferometric Imaging Radar Altimeter
We introduce the derivation and validation of the echo waveform model (EWM) for the ChineseTiangong-2 interferometric imaging radar altimeter (TG2-InIRA), which was launched on Sept. 152016. The TG2-InIRA adopts small incident angles from 1 to 8 degree and short interferometric baseline of 2.3m so as to realize high coherency measurement of radar scattering from sea surface aiming to retrieve three- dimensional ocean topography with centimeter-level accuracy. We derived the EWM by multiplication of the antenna pattern in range direction, the backscattering coefficient model and the system response function. Real in-orbit observation data has been used to validate the developed EWM and an initial wind speed retrieval algorithm is proposed.
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