An Echo Model for Big Antenna Mispointing Angle and Its Application in HY-2A Satellite Radar Altimeter

WANG Lei; XU Ke; LIU Peng; XU Xi-yu

doi:10.3969/j.issn.0372-2112.2013.09.027

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An Echo Model for Big Antenna Mispointing Angle and Its Application in HY-2A Satellite Radar Altimeter

更新时间：2025-07-16

- An Echo Model for Big Antenna Mispointing Angle and Its Application in HY-2A Satellite Radar Altimeter
- Acta Electronica Sinica Vol. 41, Issue 9, Pages: 1836-1841(2013)
- 作者机构：
  
  1. 中国科学院微波遥感技术重点实验室, 中国科学院空间科学与应用研究中心,北京,100190
  2. 中国科学院大学,北京,100049
  3. 中国科学院微波遥感技术重点实验室中国科学院空间科学与应用研究中心,北京,100190
  4. 中国科学院大学,北京,100049
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0372-2112.2013.09.027
  CLC： TN953
- Published：2013
- 稿件说明：
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WANG Lei, XU Ke, LIU Peng, et al. An Echo Model for Big Antenna Mispointing Angle and Its Application in HY-2A Satellite Radar Altimeter[J]. Acta Electronica Sinica, 2013, 41(9): 1836-1841.
DOI：

WANG Lei, XU Ke, LIU Peng, et al. An Echo Model for Big Antenna Mispointing Angle and Its Application in HY-2A Satellite Radar Altimeter[J]. Acta Electronica Sinica, 2013, 41(9): 1836-1841. DOI： 10.3969/j.issn.0372-2112.2013.09.027.

摘要

本文分析了雷达高度计在天线误指向角较大的情况下

目前常用的回波模型存在的主要问题.提出了一个带有偏斜度系数的雷达高度计二阶回波模型

该模型适用于大误指向角情况下的回波重跟踪处理.本文利用该模型对HY-2A卫星雷达高度计的回波数据进行了处理

并将处理结果与NDBC(National Data Buoy Center)的海洋浮标观测数据做了比较

获得了比现有模型更好的结果.

Abstract

The main problem of the conventional radar altimeter echo model for big antenna mispointing angle is analyzed

and then an echo model containing the sea surface skewness coefficient is derived.This echo model can be used for retracking the echo wave when the antenna mispointing angle is big.Finally

the model is used to process the data of the HY-2A radar altimeter during the stage of adjusting satellite attitude

and the results are compared with the measurements of the buoys of NDBC(National Data Buoy Center).It shows that the model can give more accurate results.

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Related Institution

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