Wind Retrieval Simulation of a Rotating Range-Gated Fanbeam Scatterometer with Antennas of Different Gain Pattern

LIN Wen-ming; DONG Xiao-long

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Wind Retrieval Simulation of a Rotating Range-Gated Fanbeam Scatterometer with Antennas of Different Gain Pattern

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- Wind Retrieval Simulation of a Rotating Range-Gated Fanbeam Scatterometer with Antennas of Different Gain Pattern
- Acta Electronica Sinica Vol. 37, Issue 3, Pages: 494-499(2009)
- 作者机构：
  
  1. 中国科学院空间科学与应用研究中心,北京,100190
  2. 中国科学院研究生院,北京,100049
  3. 中国科学院空间科学与应用研究中心北京,100190
  4. 中国科学院研究生院北京,100049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP732+.1
- Published：2009
- 稿件说明：
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LIN Wen-ming, DONG Xiao-long. Wind Retrieval Simulation of a Rotating Range-Gated Fanbeam Scatterometer with Antennas of Different Gain Pattern[J]. Acta Electronica Sinica, 2009, 37(3): 494-499.
DOI：

LIN Wen-ming, DONG Xiao-long. Wind Retrieval Simulation of a Rotating Range-Gated Fanbeam Scatterometer with Antennas of Different Gain Pattern[J]. Acta Electronica Sinica, 2009, 37(3): 494-499. DOI：

摘要

本文介绍了一种星载Ku波段旋转扫描扇形波束散射计及其主要系统参数.该散射计工作在500km高度的太阳同步轨道.通过仿真比较这种散射计在不同增益天线下的风场反演能力

确定刈幅大于1000km时天线的双程增益应不小于51.5dB、距离向3dB波束宽度约为25度.最后将反演风场的质量与笔形波束的SeaWinds散射计的结果进行对比

得知这种新型的散射计有良好的风场反演能力.特别地

它能显著改善高风速条件下的风向反演精度.

Abstract

A Ku-band rotating

range-gated

fanbeam spaceborne scatterometer and its main parameters are described in this paper.This scatterometer is designed for a polar-orbit satellite with an orbit height of 500km.By simulation

the wind retrieval qualities with different antenna types are compared;and then two important parameters of the antenna

the two-way antenna gain and the half power beam-width in the range direction

are optimized

for an expected swath width of more than 1000km.It is concluded that the two-way antenna gain should be no less than 51.5dB

and -3dB beam width along the range direction (the elevation direction) is about 25degree.The results show that this new kind of scatterometer has better performance in wind retrieval compared with the spaceborne pencil-beam radar scatterometer

such as SeaWinds.Especially

the quality of retrieved wind direction can be improved significantly by this new system

under high wind-speed conditions.

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Related Author

HE Yi-jun

DONG Xiao-long

ZHU Di

YUN Ri-sheng

MA Jian-ying

LIN Wen-ming

CHEN Zi-hao

WANG Shou-jue

Related Institution

Key Laboratory of Space Ocean Remote Sensing and Applications， Ministry of Natural Resources of the People’s Republic of China

University of Chinese Academy of Sciences

National Space Science Center， Chinese Academy of Sciences

School of Marine Sciences， Nanjing University of Information Science and Technology

Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

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