| 双星时差频差联合定位系统性能分析 |
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| 引用本文： | 吴世龙,赵永胜,罗景青.双星时差频差联合定位系统性能分析[J].上海航天,2007,24(2):47-50. |
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| 作者姓名： | 吴世龙 赵永胜 罗景青 |
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| 作者单位： | 中国人民解放军61541部队 北京100094(吴世龙，赵永胜)，解放军电子工程学院 安徽合肥230037(罗景青) |
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| 基金项目： | 国家高新（863）计划资助（2005AA776061） |
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| 摘 要： | 针对基于到达时延(TDOA)/到达频延(FDOA)联合估计定位的双星定位系统,建立了时差频差联合定位的模型并给出了解算过程。对系统定位精度的理论分析和不同参数条件下的定位性能仿真计算结果表明,双星系统可实现对辐射源的高精度定位。频差和时差测量误差对系统性能均有影响,但前者的作用更显著。基线长度越大、卫星轨道高度越低,系统性能就越优。
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| 关 键 词： | 双星编队 无源定位 时差 频差 圆概率误差 |
| 文章编号： | 1006-1630（2007）02-0047-04 |
| 修稿时间： | 2006-06-13 |
Performance Analysis of Dual-Satellite Joint FDOA and TDOA Location System |
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| WU Shi-long, ZHAO Yong-sheng, LUO Jing-qing.Performance Analysis of Dual-Satellite Joint FDOA and TDOA Location System[J].Aerospace Shanghai,2007,24(2):47-50. |
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| Authors: | WU Shi-long ZHAO Yong-sheng LUO Jing-qing |
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| Institution: | 1. The Unit 61541 of CPLA, Beijing 100094, China; 2. PLA Electronic Engineering Institute, Hefei Anhui 230037, ,China |
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| Abstract: | The algorithm model of joint-positioning of time difference and frequency difference was established for the dual-satellite positioning systems based on time difference of arrival and frequency difference of arrival in this paper, and the solving process was also given.The result of the theory analysis for system positioning accuracy and simulation under the conditions with various parameter changes showed that both measurement error of the frequency difference and time difference had effect on the system performance,the function of the former was much greater.Moreover,the longer baseline,the lower satellite's orbit,the higher system's performance. |
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| Keywords: | Dual-satellite formation Passive location Time difference of arrival Frequency difference of arrival Circular error probability |
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