Research On Acoustic Measurement System Of Brust-point

Acoustic positioning measurement is a new measurement method in recent years. It has the advantages of low cost, wide coverage and so on. These characteristics make it have broad application prospects in the field of weapon test. The aspect of acoustic measurement system of burst-point was studied. Main contents include: Aiming at the problem of acoustic measurement in aerial bomb point coordinates of all kinds of weapons.Actively carry out the acoustic array model and positioning algorithm, acoustic signal extraction method and time difference calculation processing a variety of theoretical research.This paper first established a solid five element three array aerial blast point acoustic localization model, based on probability density of the multistatic matrix fusion algorithm was constructed by layer recursive comprehensive meteorological correction model is proposed.Secondly, through the analysis of the collected sound signal components. The accurate extraction of acoustic signals in the field environment is studied, combining spectral subtraction, band-pass filter and wavelet transform technology, proposes a comprehensive extraction method of acoustic signals; according to the measured target signal model proposed extraction algorithm based on generalized cross correlation of the acoustic localization delay, a generalized cross-correlation function model and improve the accuracy of time delay extraction.Finally, a prototype of acoustic burst measurement system is developed and designed. After repeated simulation test of simulation and experiment prove that the system meets the requirements of the initial design, for all kinds of weapons and ammunition air burst test provides a new, fast acoustic measurement method, with some military and economic benefits, to fill the gaps in the application research in this field.