An advanced wind vector retrieval algorithm for the rotating fan-beam scatterometer

XIE Xuetong; WEN Ya; HUANG Zhou

doi:10.1007/s13131-017-1062-7

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Article Navigation > Acta Oceanologica Sinica > 2017 > 36(5): 83-89

XIE Xuetong, WEN Ya, HUANG Zhou. An advanced wind vector retrieval algorithm for the rotating fan-beam scatterometer[J]. Acta Oceanologica Sinica, 2017, 36(5): 83-89. doi: 10.1007/s13131-017-1062-7

Citation:

XIE Xuetong, WEN Ya, HUANG Zhou. An advanced wind vector retrieval algorithm for the rotating fan-beam scatterometer[J]. Acta Oceanologica Sinica, 2017, 36(5): 83-89. doi: 10.1007/s13131-017-1062-7

XIE Xuetong, WEN Ya, HUANG Zhou. An advanced wind vector retrieval algorithm for the rotating fan-beam scatterometer[J]. Acta Oceanologica Sinica, 2017, 36(5): 83-89. doi: 10.1007/s13131-017-1062-7

Citation:

XIE Xuetong, WEN Ya, HUANG Zhou. An advanced wind vector retrieval algorithm for the rotating fan-beam scatterometer[J]. Acta Oceanologica Sinica, 2017, 36(5): 83-89. doi: 10.1007/s13131-017-1062-7

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An advanced wind vector retrieval algorithm for the rotating fan-beam scatterometer

doi: 10.1007/s13131-017-1062-7

1.
School of Geographical Sciences, Guangzhou University, Guangzhou 510006, China
2.
College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
3.
Institue of Remote Sensing and Geographical Information System, Peking University, Beijing 100871, China

Received Date: 2016-05-07

Abstract

Abstract

The rotating fan-beam scatterometer (RFSCAT) is a new type of satellite scatterometer that is proposed approximately 10 a ago. However, similar to other rotating scatterometers, relatively larger wind retrieval errors occur in the nadir and outer regions compared with the middle regions of the swath. For the RFSCAT with the given parameters, a wind direction retrieval accuracy decreases by approximately 9 in the outer regions compared with the middle region. To address this problem, an advanced wind vector retrieval algorithm for the RFSCAT is presented. The new algorithm features an adaptive extension of the range of wind direction for each wind vector cell position across the whole swath according to the distribution histogram of a retrieved wind direction bias. One hundred orbits of Level 2A data are simulated to validate and evaluate the new algorithm. Retrieval experiments demonstrate that the new advanced algorithm can effectively improve the wind direction retrieval accuracy in the nadir and outer regions of the RFSCAT swath. Approximately 1.6 and 9 improvements in the wind direction retrieval are achieved for the wind vector cells located at the nadir and the edge point of the swath, respectively.
- rotating fan-beam scatterometer,
- objective function,
- wind vector retrieval,
- distribution histogram of bias,
- wind direction extension

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References(16)

References

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