The Frequency Synchronization and Synchronization Error Compensation of Airborne Bistatic SAR

ZHU Zhen-bo; TANG Zi-yue; JIANG Xing-zhou

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The Frequency Synchronization and Synchronization Error Compensation of Airborne Bistatic SAR

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- The Frequency Synchronization and Synchronization Error Compensation of Airborne Bistatic SAR
- Acta Electronica Sinica Vol. 34, Issue S1, Pages: 2417-2420(2006)
- 作者机构：
  
  1. 海军工程大学,湖北,武汉,430033
  2. 空军雷达学院,湖北,武汉,430019
  3. 海军工程大学,湖北,武汉,430033
  4. 空军雷达学院,湖北,武汉,430019
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN957
- Published：2006
- 稿件说明：
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ZHU Zhen-bo, TANG Zi-yue, JIANG Xing-zhou. The Frequency Synchronization and Synchronization Error Compensation of Airborne Bistatic SAR[J]. Acta Electronica Sinica, 2006, 34(S1): 2417-2420.
DOI：

ZHU Zhen-bo, TANG Zi-yue, JIANG Xing-zhou. The Frequency Synchronization and Synchronization Error Compensation of Airborne Bistatic SAR[J]. Acta Electronica Sinica, 2006, 34(S1): 2417-2420. DOI：

摘要

机载双站SAR系统中

收发平台是分置的

收发载机本振频率源的不同步

将会引起回波信号相位误差的积累

其积累时间长度为整个合成孔径时间.本文给出了"GPS+独立高稳定频率源"实现双站SAR收发频率同步的方法

并对该同步方法引起的同步相位误差进行了分析

提出了一种基于收发平台视距通信的频率同步误差补偿方法.最后给出了对几种典型频率同步误差的补偿仿真

仿真结果表明

该频率同步误差补偿方法能够有效地补偿由收发不同步引起的误差项.

Abstract

For airborne bistatic SAR system

bistatic SAR uses separated transmitter and receiver flying on different platforms

the difference between the oscillator clock of receiver and transmitter will result in phase drifts error

which will accumulate during the whole imaging time.The paper will concentrate on the problem of frequency synchronization between a bistatic transmitter and receiver pair

firstly a possible solutions(GPS

high stable local oscillators) for synchronization error compensation is given

and the corresponding phase error aroused by the abo ve frequency synchronization method is analyzed

then a synchronization error compensation method based on the direct communications between the transmitter and receiver pair is studied in detail.At last

this paper shows the simulation of frequency synchronization error compensation of several representative

frequency synchronization error models

which shows the validity of the compensation method in the paper.

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