The Research On Detection And Recognition Algorithm Based On Seismic Sensors

The property is researched on detection and recognition algorithm based on seismic sensorsDetection Algorithm of ground target is mainly to detect the acquired target signal in time domain by the improved higher order zero-crossings algorithm. The principle is to design dynamic windows, calculate the zero-crossings in each window, and then obtain the test results compared with the fixed the value of a threshold.Target recognition algorithm wavelet-decomposes and noise-deafens the acquired signals. Then it inspects the periodic chart in power spectrum estimation which is identified and improved zero-crossings in time and frequency domain. This method is based on the zero-crossings to identify different people and vehicles, through improving the periodic chart in power spectrum estimation, with analytical method of estimation to identify single and multiplayer objectives, and finally combines these two methods to obtain the identifying result.As to the design of hardware system, aim at the volume of data, complexity of logic control and the requirements of less power, usage, ease of amendment in the entire system, this paper adapts high-speed signal processing digital signal processor to obtain information. Hardware system mainly consists of 6 modules, that is, data input module, data processing module, external storage modules, output modules, control modules and power supply modules. System software design proposal includes the algorithm of programming and translates it into executable DSP system code.The result of this study has been applied in the CAS Shanghai Institute of Microsystems and Information Technology in a military project. In field experiments, the long-range target detection and the accurate identification achieve the requirements of this project.