| 基于静止、准静止双星TDOA／FDOA无源定位算法 |
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| 引用本文： | 盛卫东,邓新蒲,周一宇.基于静止、准静止双星TDOA／FDOA无源定位算法[J].电子对抗,2007(1):1-5. |
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| 作者姓名： | 盛卫东 邓新蒲 周一宇 |
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| 作者单位： | 国防科技大学电子科学与工程学院,长沙410073 |
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| 摘 要： | 针对由静止卫星、准静止卫星构成的无源定位系统，该文研究了利用到达时间差／到达频率差（TDOA／FDOA）联合对地球表面固定辐射源的无源定位算法。与迭代搜索法相比，该算法不需要初值，不用迭代运算，仅仅需要解4次多项式方程，因此该算法更有效。文中推导了定位方程的求解算法，分析了多项式方程的多根情况，并提出了相应的解决办法；最后进行了蒙特卡罗仿真，仿真结果表明该算法具有适应能力强、定位精度高的优点。
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| 关 键 词： | 双星定位 无源定位 TDOA FDOA |
| 修稿时间： | 2006-10-10 |
TDOA/FDOA Passive Geo-location Algorithm of one Stationary Satellite and one Quasi-stationary Satellite |
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| Sheng Weidong, Deng Xinpu, Zhou Yiyu.TDOA/FDOA Passive Geo-location Algorithm of one Stationary Satellite and one Quasi-stationary Satellite[J].Electronic Warfare,2007(1):1-5. |
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| Authors: | Sheng Weidong Deng Xinpu Zhou Yiyu |
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| Affiliation: | School of Electronic Science and Engineering, NUDT, Changsha 410073, China |
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| Abstract: | Based on the passive geo-location system constructed of one stationary satellite and one quasi-stationary satellite, an algorithm to locate a stationary target on the earth surface by time difference of arrival/frequency difference of arrival (TDOA/FDOA) measurements is proposed in this paper. Compared to iterative searching algorithm, this algorithm needs no initial positions and no iterative operations, and only needs to resolve a 4th-order polynomial equation, thus it works more effectively. In this paper, a resolving algorithm of the locating equations is provided, the roots of the polynomial equation are analyzed, and the corresponding solving methods are provided. At last, a simulation is presented, the results show that this algorithm is adaptable and locating precision is high. |
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| Keywords: | 2-sattellite location Passive geo-location TDOA FDOA |
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