| 卫星干扰源定位系统中到达时差检测方法研究 |
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| 引用本文： | 刘颖,张继旺,黄道超.卫星干扰源定位系统中到达时差检测方法研究[J].合肥工业大学学报(自然科学版),2009,32(9). |
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| 作者姓名： | 刘颖 张继旺 黄道超 |
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| 作者单位： | 北京交通大学电子信息工程学院,北京,100044 |
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| 基金项目： | 北京交通大学基金资助项目，北京市自然科学基金资助项目 |
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| 摘 要： | 为了进一步提高卫星干扰源测时差定位的性能,文章提出了一种基于小波变换和奈曼一皮尔逊准则的到达时间差参数估计方法.该方法利用小波去噪特性,在低信噪比环境下,能够准确估计接收信号的TDOA参数,为提高卫星干扰源定位性能提供了有效方法;通过选择最佳小波基函数对接收信号直接进行加权处理,减小了传统小波变换过程中的运算量,仿真结果验证了算法的可靠性和有效性.
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| 关 键 词： | 无线通信技术 参数估计 干扰源定位 到达时间差 小波变换 |
TDOA detection algorithm in interference location for satellite systems |
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| LIU Ying,ZHANG Ji-wang,HUANG Dao-chao.TDOA detection algorithm in interference location for satellite systems[J].Journal of Hefei University of Technology(Natural Science),2009,32(9). |
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| Authors: | LIU Ying ZHANG Ji-wang HUANG Dao-chao |
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| Institution: | LIU Ying,ZHANG Ji-wang,HUANG Dao-chao(School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | In order to enhance the performance of interference location for satellite systems based on TDOA measurement,a new TDOA parameter estimation method is presented based on wavelet transform and the Naiman-Pearson principle.By the use of the characteristic of the wavelet de-noising,TDOA estimation is convergent to the true value with a high probability in the low signal-to-noise ratio(SNR) environment and the performance of interference location for satellite systems is improved.By choosing an appropriate wave... |
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| Keywords: | wireless communication technology parameter estimation interference location time-difference of arrival(TDOA) wavelet transform |
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