Research process of full-polarimetric SAR calibration without using corner reflectors
نویسندگان
چکیده
æåå®æ æ¯æååæåå¾é·è¾¾åºç¨çåæãä¼ ç»æåå®æ æ¹æ³ä»¥å°é¢å¸è®¾ç人工å®æ å¨ä¸ºåèï¼éè¿æåç¸å模å对系ç»è¯¯å·®è¿è¡æ±è§£ä¸æ å®ãç¶èï¼äººå·¥å®æ å¨ä»·æ ¼æè´µãæ°éç¨å°ï¼æ¯æ¬¡å®æ ä»»å¡é½éæ ¹æ®ä¼ æå¨è¿å¢æ¹åãé·è¾¾è§è§çä¿¡æ¯è¿è¡è®¾å¤è°æ´ï¼æ¤å¤ï¼ç°ä»£é·è¾¾ç³»ç»å·¥ä½æ³¢ä½å¤ãå ¥å°è§è°èèå´å¤§ï¼ä¸åè§è§è·åå½±åçå®æ åæ°ä¹ä¸ç¸åï¼è¿å¯¹å°é¢å®æ 设å¤çå¸è®¾ç²¾åº¦ãè°æ´çæ¶ææ§æåºäºæ´é«è¦æ±ã为äºåæ¶ãå¿«éå°å®ææåå®æ ï¼å¦ä½ä»¥èªç¶çä¸çæäºç¹æ®å°ç©ä½ä¸ºäººå·¥å®æ å¨çæ¿ä»£åæ¥å®æå®æ å ·æé大çç§å¦ä»·å¼ãæ¬æ综述äºè¿å¹´æ¥å½å ãå¤æåºçä¸ä¾èµäººå·¥å®æ å¨çSARæåå®æ ç 究è¿å±ï¼å³èªä¸»å®æ ï¼ãé¦å éè¿°äºæåå®æ çåºæ¬æµç¨ä¸æåè´¨éè¯ä»·ä½ç³»ï¼ç¶å对è¿å¹´æ¥é«ç²¾åº¦èªä¸»å®æ ç¸å ³ç 究è¿è¡äºæ¢³çï¼æ ¹æ®ææ¯ç¹ç¹å°å ¶å为åºäºèªç¶å°ç©çº¦æçèªä¸»æåå®æ ãåºäºä¼¼è§åå°å¨çèªä¸»æåå®æ 两类ï¼å¯¹ä¸åç®æ³éç¨æ§è¿è¡äºåæï¼æå对æªæ¥çç 究æ¹åè¿è¡äºå±æã
منابع مشابه
Pulse-based internal calibration of polarimetric SAR
Internal calibration greatly diminishes the dependence on calibration target deployment compared to external calibration. Therefore Electromagnetics Institute (EMI) at the Technical University of Denmark (TUD) has equipped its polarimetric SAR, EMISAR, with several calibration loops and developed a procedure calibrating the entire system except a few passive components which must be measured in...
متن کاملPolarimetric and Interferometric SAR Calibration Verification Methods
It is necessary to calibrate SAR data in order to use the data for science applications. When both polarimetric and interferometric data are collected simultaneously, these SAR data can be used for cross-calibration and verification. The frequency of polarimetric and interferometric data does not have to be the same for this purpose. For example, the NASA/JPL AIRSAR system can acquire C-band in...
متن کاملSupervised Baysian SAR image Classification Using The Full Polarimetric Data
Supervised classification procedures are developed and applied to synthetic aperture radar (SAR) in order to identify their various earth terrain components. An implementation of the maximum a posteriori (MAP) and the maximum likelihood (ML) algorithms are presented. These two techniques need a statistic model for the conditional distribution of the polarimetric complex data. Many previous stud...
متن کاملGeometric, Radiometric, Polarimetric and Along-Track Interfer- ometric Calibration of the new F-SAR system of DLR in X-Band
Since November 2006, DLR operates F-SAR a new airborne SAR sensor beside its experimental airborne SAR sensor E-SAR. F-SAR is a totally new development utilizing most modern hardware. It is presently operated in X-band and has been supplemented recently being fully polarimetric. F-SAR already accomplished several flights and acquired SAR data in different operation modes, amongst others in alon...
متن کاملExternal Calibration of Millimeter-Wave Atmospheric Radar Systems Using Corner Reflectors and Spheres
Millimeter-wave (MMW) radars have become standard cloud research tools because of their high sensitivity to small cloud particles, low prime power requirements, and compact size. However, MMW radars are more likely to suffer gain variations, so their calibration becomes crucial. Radar systems can be calibrated absolutely by various methods such as measurements of individual system parameters, c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of remote sensing
سال: 2021
ISSN: ['1007-4619', '2095-9494']
DOI: https://doi.org/10.11834/jrs.20219310