Dsp-based Battlefield Acoustic Target Identification Technology

One of the most important developing position of the armament is the intelligentized andmicromation in the future. One remarkable character of the intelligentized armament is that itcan identify the inimical target, acquire the character, then take the most effective assault todifferent targets. Passive sound target identification has the strongpoint such as high detectionprecision,unlimited by the visual conditions,great convert property. Followed by thedevelopment of the embedded systems such as DSP ,FPGA , the armation gets a rapiddevelopment in the micromation . This paper introduces the design and achievement ofbattlefield sonnd identification based on DSP.This paper has a deep research of the framework and formation of the identificationsystem based on DTW, discusses the pick-up process of LPCC and the fundamental principleand arithmetic of DTW model. According to the characteristic of the noise environment in thebattlefield, this paper introduces the discussion of the parameter antinoise and research on theend-point detection, gets some useful conclusion in the experiment, it provides someexperimental basis for the DSP achievement of the sound target identification system.The Real-time property and DTW arithmetic are the key technology of the sound targetidentification system;this paper introduces the achievement by the DSP. Based on theproperty of DSP and the structure of TMS320VC33, designs the flow of the real-time soundtarget identification achieved by the DSP, analyses the process of the sound signal short-timeprocess framing,frame-shift in character parameter acquisition achieved by the DSP.In the research of the achievement of DTW identification arithmetic by DSP, aimed at thedecrease of the quantity of the calculation and the storage. To ensure the identificationproperty, the author researched on the achievement of the model structure,characterparameter dimension by DSP, finally achieved a sound target identification system based onDSP.