High speed sound source detection based on ADFSD measurement

In this paper, a detection of semi-unknown high speed moving sound sources technique using only a single microphone in a real environment is proposed. Doppler processing techniques in cooperation with an array of high sensitive and high performance (expensive) microphones are commonly used techniques to detection, identification (classification) and various moving parameters estimation of a known moving sound source as high speed automobiles in a highway and low flying aircrafts. In this paper, it is shown that these techniques are applicable using only one microphone for detecting of a semi-unknown high speed moving sound source except the times that the source moves straightway (straightly toward) or straightaway (straightly away) from the microphone. Therefore, the Acoustic Doppler Frequency Shift Difference (ADFSD) is measured between the consecutive acoustic data frames of the moving sound source which are acquired by means of a single microphone. The simulation results on the truth data which were gathered in an airport, confirm this claim.