| Technology and Methodology |
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Absolute radiometric calibration of level-1 detected ground range products of new SAR sensors |
| DU Weina1, XU Aigong1, SONG Yaoxin2, SUN Huasheng1 |
1. Liaoning Technical University, Fuxin 123000, China;
2. Traffic Management Research Institute of Ministry of Public Security, Wuxi 214151, China |
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Abstract For the current situation of the lack of the new SAR sensor data preprocessing software, this paper introduced in detail the methods of absolute radiometric calibration and the parameter acquisition for several new SAR sensor level-1 detected products, such as ENVISAT ASAR,Radarsat2,Cosmoskymed,TerraSAR-X and Sentinel1. In addition, the absolute radiometric calibration process was achieved by programming with the level-1 detected ground range products(L-1 DGRP) data of Sentinel1 sensor, and C++ programming language was used to achieve the absolute radiation of the calibration process. At last, the radiometric calibration results produced by the method developed in this paper and implemented in the authors' software were compared with those by ESA S1 ToolBox, the freely distributed SAR data processing tool by European Space Agency, and it is shown that the two numerical back scattering systems are basically the same. The radiometric calibration method developed in this paper is proved to be correct by the program implementation.
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| Keywords
remote sensing
precipitation infiltration
recharge conditions
differentiation
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Issue Date: 20 October 2016
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2016,
Vol. 28
