Short-Time Frequency Measurement of Narrow-Band Random Signals in the Presence of Wide-Band Noise

Abstract

In certain applications it is necessary to measure the center frequency of a symmetrical power spectrum in the shortest possible time. Two instrumentations for short-time frequency measurement, the autocorrelator and the frequency discriminator, are examined for their ability to accomplish this task. The analysis compares the performance of the two systems and indicates the effect of such factors as signal-to-noise ratio and filter adjustment.