| 一种无源定位系统时差测量方法 |
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| 引用本文： | 齐大志,马亚涛. 一种无源定位系统时差测量方法[J]. 电子科技, 2013, 26(2): 45-48 |
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| 作者姓名： | 齐大志 马亚涛 |
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| 作者单位： | (1.西安电子科技大学 电子信息攻防对抗与仿真技术教育部重点实验室,陕西 西安 710071;2.解放军63880部队 技术部,河南 洛阳 471003) |
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| 摘 要： | 讨论了无源定位的几种基本方法,介绍了时差定位的原理。研究了当前基于测量时差无源定位系统,及系统中存在的不足。提出了一种使用短时傅里叶变换提高时差测量精度的方法。最后,对此方法构成的时差无源定位系统做了计算机仿真,仿真结果显示,此方法具有时差测量精度高等优点,提高了整个无源定位系统的定位精度。
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| 关 键 词： | 时差定位 统一信号 时间差 短时傅里叶变换 |
A Method of Time Difference Measurement in Passive Location Systems |
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| QI Dazhi , MA Yatao. A Method of Time Difference Measurement in Passive Location Systems[J]. Electronic Science and Technology, 2013, 26(2): 45-48 |
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| Authors: | QI Dazhi MA Yatao |
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| Affiliation: | (1.Key Laboratory of Electronic Information Countermeasure and Simulation of Ministry of Education,Xidian University,Xi'an 710071,China;2.Technical Department,Unit 63880 of the PLA,Luoyang 471003,China) |
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| Abstract: | This paper discusses several basic methods of passive location and briefly introduces the principle of Time Difference of Arrival (TDOA) location.Current TDOA location systems are researched,and the advantages of them are described.A Short Time Fourier Transform (STFT) time difference measure is presented.Finally,a computer simulation of TDOA location system using STFT time difference measure is done,which shows this new method has the advantages of higher precision and so on thus improving the location precision of the whole passive location system. |
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| Keywords: | TDOA location signal synchronization time difference short time fourier transform, |
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