CAJ | 학술논문

本文研究了一种基于时间梳原理的高频正弦信号幅值测量方法,介绍了时间梳原理并详细分析了其特点,并将此原理应用于高频信号的幅值测量中,可以在不满足乃奎斯特采样定理的条件下,用低于被测信号的频率对被测高频信号进行同步采样,避免了高频信号采样的高采样率,结合自相关和多重自相关技术,实现了对高频正弦信号的幅值的准确测量,实验结果表明本文算法对高频信号的幅值测量具有很高的测量准确度,尤其在低信噪比下也有较高的测量准确度,具有较高的工程实用价值.
본문연구료일충기우시간소원리적고빈정현신호폭치측량방법,개소료시간소원리병상세분석료기특점,병장차원리응용우고빈신호적폭치측량중,가이재불만족내규사특채양정리적조건하,용저우피측신호적빈솔대피측고빈신호진행동보채양,피면료고빈신호채양적고채양솔,결합자상관화다중자상관기술,실현료대고빈정현신호적폭치적준학측량,실험결과표명본문산법대고빈신호적폭치측량구유흔고적측량준학도,우기재저신조비하야유교고적측량준학도,구유교고적공정실용개치.
A new method for amplitude measurement based on time comb technology is introduced in this paper. The principle of time comb is given, and its characteristic is analyzed . The principle is used in data acquisition of high frequency. Equivalent sampling technology is abstained, avoiding high sampling frequency and combined with autocorrelation and multilayer autocorrelation technology, Then amplitude is detected when the Nyquist sampling theorem is not satisfied. Simulation results shows that the high resolution for high frequency signals especially in low signal-noise ratio condition.