Analysis and Calibration of the Channels Error of Synthetic Aperture Radiometer

LIU Hao; WU Ji; WU Qiong

您当前的位置：

首页 >

文章列表页 >

Analysis and Calibration of the Channels Error of Synthetic Aperture Radiometer

更新时间：2025-07-16

- Analysis and Calibration of the Channels Error of Synthetic Aperture Radiometer
- Acta Electronica Sinica Vol. 33, Issue 3, Pages: 402-406(2005)
- 作者机构：
  
  中国科学院空间科学与应用研究中心国家863计划微波遥感技术实验室,北京,100080
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP722.6
- Published：2005
- 稿件说明：
移动端阅览
LIU Hao, WU Ji, WU Qiong. Analysis and Calibration of the Channels Error of Synthetic Aperture Radiometer[J]. Acta Electronica Sinica, 2005, 33(3): 402-406.
DOI：

LIU Hao, WU Ji, WU Qiong. Analysis and Calibration of the Channels Error of Synthetic Aperture Radiometer[J]. Acta Electronica Sinica, 2005, 33(3): 402-406. DOI：

摘要

本文首先建立了综合孔径微波辐射计的信道模型

在此基础上分析了信道的幅度相位不平衡以及信道间串扰对反演亮温的影响

并给出了系统仿真结果.本文还提出了一种新的系统定标方案

与传统定标方法相比

该方法可以非常方便的获取高精度的系统调制G矩阵用于亮温反演.

Abstract

Theoretical channels model of synthetic aperture radiometer are presented.Based on this model

how amplitude imbalance

phase imbalance and mutual coupling between the different receiving channels effect brightness temperature retrieving is analyzed.The computer simulation results are also presented

in which the cause of the along-track streaks usually appeared in the retrieved image is identified.In addition

a new system calibration approach is introduced to solve this problem: using digital I-Q vector modulators to simulate the point source in the antenna range

we can get more accurate G Matrix to retrieve the brightness temperature image.This new approach

as compared with the existing calibration methods

is especially suitable for in situ use.

关键词

Keywords

references

Views

1278

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

A Direct Position Determination Approach for Radio Emitters in Presence of Mutual Coupling

Related Author

WANG Ding

ZHANG Rui-jie

ZHANG Tao

Related Institution

Institute of Information System Engineering, PLA Information Engineering University

State key laboratory of mathematical engineering and advanced computing, PLA Information Engineering University

Nanjing military region military affairs department

Institute of Information System Engineering PLA Information Engineering University Zhengzhou Henan China

State key laboratory of mathematical engineering and advanced computing PLA Information Engineering University Zhengzhou Henan China

⁰