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ZOU Juhong, GUO Maohua, CUI Songxue, ZHOU Wu. Airborne test flight of HY-2A satellite microwave scatterometer and data analysis[J]. Journal of Oceanology and Limnology, 2017, 35(1): 61-69 |
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Airborne test flight of HY-2A satellite microwave scatterometer and data analysis |
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| ZOU Juhong1,2, GUO Maohua1,2, CUI Songxue1,2, ZHOU Wu1,2 |
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1 National Satellite Ocean Application Service, Beijing 100081, China;
2 Key Laboratory of Space Ocean Remote Sensing and Application, SOA, Beijing 100081, China |
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| Abstract: |
| This paper introduces the background, aim, experimental design, configuration and data processing for an airborne test flight of the HY-2 Microwave scatterometer (HSCAT). The aim was to evaluate HSCAT performance and a developed data processing algorithm for the HSCAT before launch. There were three test flights of the scatterometer, on January 15, 18 and 22, 2010, over the South China Sea near Lingshui, Hainan. The test flights successfully generated simultaneous airborne scatterometer normalized radar cross section (NRCS), ASCAT wind, and ship-borne-measured wind datasets, which were used to analyze HSCAT performance. Azimuthal dependence of the NRCS relative to the wind direction was nearly cos(2w), with NRCS minima at crosswind directions, and maxima near upwind and downwind. The NRCS also showed a small difference between upwind and downwind directions, with upwind crosssections generally larger than those downwind. The dependence of airborne scatterometer NRCS on wind direction and speed showed favorable consistency with the NASA scatterometer geophysical model function (NSCAT GMF), indicating satisfactory HSCAT performance. |
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| Key words:
HY-2|scatterometer|airborne test flight|data analysis
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| Received: 2015-04-13 Revised: 2015-09-30 |
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