Research On Targeting And Tracking Based On Rayleigh Wave

The article has expounded the background and significance of that the passive sensors capturing the vibration signal and the status of domestic and international research and development. It has also studies the basic theory of seismic waves, especially analyzed and researched the causes and propagation characteristics of longitudinal wave, transverse wave and Rayleigh wave. As for its low frequency, high energy and far propagation distance, Rayleigh wave is accounted that it has a high value in target detection. In the study, we designed the collection system under the program of seismic wave characteristics. According to the experimental conditions, we selected the main module sensor, such as capture cards, signal conditioning units, to achieve a seismic signal acquisition function. After studying the methods of preprocessing the seismic signals and identifying the primary wave, we proposed the method of capturing the Rayleigh wave by a multi-scale filter, making use of the characteristics of Rayleigh wave’s parameters within the window to identify the Rayleigh waves. As the related experiments said, the results of data processing were consistent with the theoretical algorithms, which illustrated that the feasibility of seismic wavelet extraction methods, In the end, we used herein the joint positioning method, to separate the distance and orientation. We avoided the instability of Geiger positioning method by using the time difference to range the vibroseis, then using the linear lineup of uniaxial sensors for orientation. We also drew on the methods of linear positioning, which helped us obtain a more accurate source of location information. Experimental results showed that the joint location targeting have achieved good results.