A Study on the Sound Source Positioning of an Initial Launching Missile in Noise Environment

摘要

This article proposes a basic conceptual design for the sound source positioning of an initial launching missile in a noise environment. Most of the sound positioning algorithms were studied from a stationary sound source in an ideal environment, such as an anechoic chamber, but the proposed algorithm is applied to a moving sound source in a noise environment using a Time Difference Of Arrival (TDOA) estimation. The TDOA estimation is based on a normalized cross-correlation algorithm in the time domain that doesn't need to be de-Dopplerized. The stationary sound source position is computed by TDOA and converted into a moving sound source position. Experiments have verified that the acquired sound source position is valid and can be applied to a missile flight test.