| 星机双基地SAR的时间同步误差分析 |
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| 引用本文： | 周鹏,皮亦鸣,戴永寿,李芳.星机双基地SAR的时间同步误差分析[J].电子学报,2011,39(6):1467-1470. |
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| 作者姓名： | 周鹏 皮亦鸣 戴永寿 李芳 |
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| 作者单位： | 1. 中国石油大学(华东)信息与控制工程学院,山东东营,257061
2. 电子科技大学电子工程学院,四川成都,611731 |
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| 基金项目： | 国家自然科学基金,山东省自然科学基金,中央高校基本科研业务费专项资金 |
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| 摘 要： | 在星载双基地SAR、机载双基地SAR已有成果的基础上,分析了星机双基地SAR中时间同步误差的影响.利用已有文献提出的一种时间同步误差模型,针对星机双基地SAR中误差的影响进行了定量分析,并进行了仿真验证.结果表明:按目前振荡源的实际频率准确度和稳定度,脉冲重复频率抖动的影响可忽略,线性时间同步误差是影响成像指标的主要误差源.最后,推导了实施同步方案后系统允许的"剩余同步误差"的量化指标要求.
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| 关 键 词： | 双基地SAR 星机双基地SAR 时间同步误差 误差分析 |
| 收稿时间： | 2010-03-03 |
Analysis of Time Synchronization Errors in Spaceborne/ Airborne Hybrid Bistatic SAR |
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| ZHOU Peng,PI Yi-ming,DAI Yong-shou,LI Fang.Analysis of Time Synchronization Errors in Spaceborne/ Airborne Hybrid Bistatic SAR[J].Acta Electronica Sinica,2011,39(6):1467-1470. |
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| Authors: | ZHOU Peng PI Yi-ming DAI Yong-shou LI Fang |
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| Institution: | 1. School of Information and Control Engineering,China University of Petroleum,Dongying,Shandong 257061,China;2. School of Electronic Engineering,University of Electronic Science and Technology,Chengdu,Sichuan 611731,China |
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| Abstract: | The impact of time synchronization errors on the spaceborne/airborne hybrid bistatic SAR (SA-BSAR) is analyzed on the basis of several existing results applied to the spaceborne bistatic SAR or the airborne bistatic SAR.Quantitative error analysis,uniquely for the SA-BSAR system,is performed using an existing model for time synchronization errors.Several simulation experiments were carried out and the results indicate that in the SA-BSAR system,taking the practical accuracy and stability of the current oscillator into consideration,the impact of the pulse repetition frequency (PRF) jitter is trivial and the linear time synchronization error is proved to be the major error source.At last,the requirement on the residual errors is derived. |
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| Keywords: | bistatic synthetic aperture radar (BSAR) spaceborne/airborne hybrid bistatic SAR (SA-BSAR) time synchronization errors error analysis |
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