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| 欠采样条件下的频率估计技术研究 | |
| 引用本文： | 孟小芬,薛培信,董爱先,王戈.欠采样条件下的频率估计技术研究[J].海军航空工程学院学报,2008,23(3):245-248. |
| 作者姓名： | 孟小芬 薛培信 董爱先 王戈 |
| 作者单位： | 1. 91635部队,北京,102249 2. 92785部队,河北秦皇岛,066200 3. 海军装备部天津军事代表局,北京,100076 |
| 摘 要： | 为了在欠采样条件下实现信号真实频率的估计,文章阐述了在对信号采样过程产生频率模糊机理进行分析的基础上,根据频谱位置模糊与采样频率的特定关系,提出了利用两个欠采样频率进行采样来实现解模糊的算法,仿真验证了算法的有效性. |
| 关 键 词： | 欠采样 频谱 估计 |
Research on Frequency Estimation Technology with Down-Sampling |
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| MENG Xiao-fen,XUE Pei-xin,DONG Ai-xian and WANG Ge.Research on Frequency Estimation Technology with Down-Sampling[J].Journal of Naval Aeronautical Engineering Institute,2008,23(3):245-248. | |
| Authors: | MENG Xiao-fen XUE Pei-xin DONG Ai-xian and WANG Ge |
| Institution: | MENG Xiao-fen1,XUE Pei-xin2,DONG Ai-xian1,WANG Ge3(1.The 91635th Unit of PLA,Beijing 100249,China,2.The 92785th Unit of PLA,Qinhuangdao Hebei 066200,3.Military Representatives Bureau of NED in Tianjin,Beijing 100076,China) |
| Abstract: | In order to estimate the true signal frequency on the condition of down-sampling,firstly the theory on frequency ambiguity existed in sampling process was analyzed.According to the specific relation between position ambiguity of frequency spectrum and sampling frequency,the method to use the two down-sampling frequency to sample signal was brought forward to solve the ambiguity.Simulations were lastly conducted to show the effectiveness of the method. |
| Keywords: | down-sample frequency spectrum estimation |
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