一種穩(wěn)健的離散頻譜校正方法
A Robust Discrete Spectrum Correcting Method
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摘要: 該文提出了一種適用于連續(xù)波雷達測速的、穩(wěn)健的離散頻譜校正方法，即三角形法。該方法具有原理簡單、計算量小、易于實現(xiàn)、校正精度高等優(yōu)點。該文介紹了三角形法頻譜校正的原理，分析了三角形法校正效果隨信噪比以及參與校正的譜線根數(shù)變化情況，并給出了仿真結果。最后將三角形法和能量重心法進行了對比，得出了三角形法受信噪比變化影響較小的結論。Abstract: A robust correcting method for discrete spectrum in CW radar velocity measuring is proposed in this paper, t is named the method of triangle. This method, with low compution and high accuracy, is theoretically simple and easily carried out. The paper introduces the principle of this method, analyzes its correcting effects changed with noise and spectrum line numbers used, the simulation result is also given. Finally, the method of triangle is compared with energy centrobaric correction method, with the conclusion that noise has less effects on the method of triangle.
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Burgess T. On digital spectrum analysis of periodic signals[J].J. Acoust. Soc. Am.1975, 58(3):556-[2]randke T. Interpolation algorithms for discrete Fourier transforms of weighted signals. IEEE Trans. on Instrumentation and Measurement, 1983, IM-32(2): 350 - 355.[3]丁康,江利旗.離散頻譜的能量重心校正法.振動工程學報,2001,14(3):354-358.[4]丁康,張曉飛.頻譜校正理論的發(fā)展.振動工程學報,2000,13(1):14-22.[5]朱利民,鐘秉林,黃仁.離散頻譜多點卷積幅值修正法的理論分析.振動工程學報,1999,12(1):120.[6]黃迪山.FFT相位誤差分析及實用校正方法.振動工程學報,1994,7(2):185-189.[7]劉進明,應懷樵.FFT譜連續(xù)細化分析的傅里葉變換法.振動工程學報,1995,18(2):162-166.[8]謝明,張曉飛,丁康.頻譜分析中用于相位和頻率校正的相位差校正法.振動工程學報,1999,12(4):454-459.[9]丁康,羅江凱,謝明.離散頻譜時移相位差校正法.應用數(shù)學和理學,2002,23(7):729-735.[10]丁康,朱小勇,謝明等.離散頻譜綜合相位差校正法.振動工程學報,2002,15(1):114-118.[11]丁康,鐘瞬聰,朱小勇.離散頻譜相位差校正法研究.振動與沖擊,2001,20(2):52-55.[12]丁康,朱小勇.適用于加各種窗的一種離散頻譜相位差校正法.電子學報,2001,29(7):987-989.[13]朱小勇,丁康.離散頻譜校正方法的綜合比較.信號處理,2001,17(1):91-97. -
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