基于時域插值的小脈寬信號高精度測頻方法

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中圖分類號：TN911.7；TP273.4 文獻(xiàn)標(biāo)識碼：A 文章編號：2096-4706（2025）07-0009-05

Abstract： Aiming at the problem of frequency measurement accuracy of smallpulse width signal in low Signal-toNoise Ratio environment，this paper proposes the FFT high-precision frequency measurement method based on time domain interpolationandcobsenalgorit.roughsiulatioaalysis，teetsofdifeentintepotionmethods，eetial to-NoiseRatio，anddifferentFFTpointsonfrequencymeasurementaccuracyarestudied.Theresultsshow thatcomparedwith thetraditionalJacobsenalgorithm，thismethodfurtherimproves thefrequencymeasurementaccuracyandexhibitsstrongantinoiseperformance.Inaddition，the methodisverifedontheXilinxPGAplatform，whichproves itsengineringfeasibilityand accuracy.Duetothesmallamountofcalculation，the methodiseasytorealizereal-time procesingandhasa good prospectof engineringapplication.Theresearchresults provideanefectivesolution for thefrequency measurementofsmallpulse width signals in digital receivers.

Keywords： small pulse width; FFT frequency measurement; Jacobsen; time domain interpolation

0 引言

電子戰(zhàn)在現(xiàn)代信息化戰(zhàn)爭中起到?jīng)Q定性作用，而接收機(jī)作為無線電信號重要的接收裝置，具有重要的研究價值[1]。（剩余6212字）