AIRBORNE SAR FOR CALIBRATION OF P-BAND TOWER RADAR

被引：0
|
作者：
Ulander, Lars M. H. [1 ,2 ]
Monteith, Albert R. [1 ]
Frolind, Per-Olov [2 ]
Gustavsson, Anders [2 ]
Haglund, Anders [1 ,2 ]
Ragnarsson, Rolf [2 ]
Stenstrom, Gunnar [2 ]
机构：
[1] Chalmers Univ Technol, Gothenburg, Sweden
[2] Swedish Def Res Agcy, FOI, Linkoping, Sweden
来源：
2019 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2019) | 2019年
关键词：
BorealScat; radar; tower; calibration; P-band; LORA; SAR; airborne; BACKSCATTER INTENSITY; FOREST BIOMASS; RETRIEVAL; TARGETS;
D O I：
10.1109/igarss.2019.8899069
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
BorealScat is a tower-based radar which measures multi-polarization and tomographic backscatter time series data at a forest site in Southern Sweden. In this paper, we describe a methodology for absolute radiometric calibration of BorealScat and apply it to a set of backscatter measurements at P-band (420-450 MHz). We present radiometric calibration corrections which take into account antenna gain and range variations over the tomographic resolution cell. We also use data acquired by the LORA airborne UHF-band SAR over the BorealScat site to determine the absolute radiometric calibration factor for P-band and HH-polarization. It is shown that the methodology produces consistent results for multiple SAR images.
引用
收藏
页码：541 / 544
页数：4
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