2014, Volume 16, Issue 6
Strategic Study of CAE >> 2014, Volume 16, Issue 6
Study on channcl resolution matching algorithm for HY-2 satellite
1. National Satellite Ocean Application Service，Beijing 100081，China；
2. The Fifth Institute Xi'an Branch of China Aerospace Science and Industry Corporation，Xi’an 710100，China
Next Previous
Abstract
Accuracy Satellite Scanning Microwave Radiometer ocean parameters retrieval need brightness temperature of multiple channel from same area and identical resolution. Due to the limitation of spaceborne radiometer antenna design and feedhorn arrangement, each channel has different resolution and observation position, this will increase the ocean parameter retrieval error. Based on the HY-2 Scanning microwave radiometer antenna pattern and imaging geometry, we simulate the ground footprint form different channel, use Backu-Gilbert(BG) algorithm produce a single composite sample at a particular location and with a particular spatial weighting pattern from combination of the adjacent measurements, the low frequency 6.6GHz is set as the reference channel. The result showed that the matching with resolution decreasing could simulate the real instrument observation without introducing noise.
Figures
图1
图2
图3
图4
图5
References
[ 1 ] 蒋兴伟，林明森，宋清涛. 海洋二号卫星主被动微波遥感探测 技术研究[J]. 中国工程科学，2013，15(7)：4-11. link1
[ 2 ] Fu Lee-Lueng，Cazenave Anny. Satellite Altimetry and Earth Sciences：A Handbook of Techniques and Applications [M]. Massachusetts：Academic Press，2001. link1
[ 3 ] 张有广，张 杰，纪永刚. 机载高度计获取有效波高快速反演 算法研究[J]. 海洋科学进展，2002，20(4)：5-10. link1
[ 4 ] Barrick D. Remote sensing of sea state by radar [C]// Ocean 72- IEEE International Conference on Engineering in the Ocean Environment. New York：The Institute of Electrical and Electronic Engineering，1972：186-192. link1
[ 5 ] 纪永刚，张 杰，张有广. 神舟四号高度计有效波高反演[C]// 第十四届全国遥感技术学术交流会论文摘要集. 青岛，2003： 79-80. link1
[ 6 ] 李秀仲，张有广，孟俊敏. 基于HY-2卫星高度计机载校飞数据 的有效波高信息提取及初步分析[J]. 海洋科学进展，2012，30 (2)：212-218. link1
[ 7 ] 徐曦煜，刘和光. 高度计姿态角估计算法误差分析[J]. 中国科 学院研究生院学报，2008，25(1)：54-60. link1
[ 8 ] Hayne G S. Radar altimeter mean return waveforms from nearnormal- incidence ocean surface scattering [J]. Antennas and Propagation，IEEE Transactions on，1980，28(5)：687-692. link1
京公网安备 11010502051620号
