The Detection Of The Narrow Impulse And Time Measure Using DSP

The researches on the digital signal processing in the underwater buoyage and its realization on DSP are the main work of the dissertation,based on the system of the detection of the fast moving target with the high precision. The task of the work is the research of the software in high reliability with the known characteristic of the radiation of the target.The following two parts are mainly contained in the paper: simulations and researches on the detection of the narrow impulse and the location of the depth of the target using the algorithm of the double hyperboloid and the realization on DSP with the software in assembly language.Firstly,for the module of the detection,the exact time of the received signals from the target can be detected through the recursive filter of first order in order to normalize the background noise,the threshold is regulated automatically. The original depth of the target can be gained with the algorithm of hyperbolical join. The simulation experiments show that the algorithm is feasible.Secondly,the realization of the software programme is required according to the fact requests of the acoustic signal processing board. The collocations with the software are so accomplished based on the TMS320VC5509 hardware resources. The DSP experiments show that the software is reliable.