【摘要】：針對正弦信號頻率估計復(fù)雜度和性能難以兼顧的問題,提出一種基于雙門限判決修正Rife算法的頻率估計算法.將信號頻點(diǎn)劃分為3個區(qū)域分別采用不同處理方案,具有估計精度高、運(yùn)算量小的特點(diǎn),適用于低功耗、低延時等應(yīng)用場合.仿真結(jié)果表明,該方法克服了經(jīng)典Rife算法在部分頻點(diǎn)估計誤差大的問題,其頻率估計均方根誤差距離克拉美羅界僅有0.5dB.與現(xiàn)有其它改進(jìn)Rife算法相比,該方法在保證估計性能基本不變的前提下大幅降低所需計算量,有利于工程實現(xiàn).
[Abstract]:Aiming at the problem that the complexity and performance of sinusoidal signal frequency estimation are difficult to take into account, a frequency estimation algorithm based on two-threshold decision modified rife algorithm is proposed. The signal frequency points are divided into three regions with different processing schemes, which have the advantages of high estimation accuracy and low computation cost. It is suitable for low power consumption and low delay applications. The simulation results show that the proposed method overcomes the problem of large error in partial frequency estimation of the classical rife algorithm. The root mean square error of the frequency estimation is only 0.5 dB from the Crameiro bound. Compared with other improved rife algorithms, the proposed method can greatly reduce the computational complexity while ensuring that the estimation performance is basically unchanged, which is beneficial to engineering implementation.
【作者單位】： 北京理工大學(xué)信息與電子學(xué)院;中國專利技術(shù)開發(fā)公司;
【基金】：國家“八六三”計劃項目(2012AA01A505) 國家自然科學(xué)基金資助項目(61271258,61301089)
【分類號】：TN911.23

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1 司偉建;郝鑫;趙忠凱;陳濤;;基于改進(jìn)的Rife測頻算法及其FPGA實現(xiàn)[J];彈箭與制導(dǎo)學(xué)報;2012年01期

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