Vehicles And Personnel Poeitioning Technology Based On Ground Motion Sensor

Unattended ground sensors as a means of traditional target detection in the complicated terrain of a complementary,in recent years,with the development of sensor technology and computer technology,have a very big promotion in the performance.Vehicles and personnel target localization based on seimsic sensors as an important technology of the battlefield ground target detection conform to the requirements of the modern information war.Along with the development of computer technology,automation technology and sensor technology,not only in terms of promoting national defense construction and development,in terms of civil promotion,vehicles and personnel positioning technology based on ground motion sensor also there is a big market.However,In the study of existing studies of specific objectives is lacking.So not only on the theoretical research,research in the implementation of the specific environment also has important significance.The purpose of this article is to make the ground positioning system become intelligent and miniaturization.We began to the researchof vehicles and personnel positioning technology based on ground motion sensor.Analyzed and summarized key technologies of based on TDOA location method,including the time delay estimation and target localization,we put forward the improvement opinion.We studied the topology of Multiple arrays.According to the field experiments the function of the system is verified.The main content of this paper is as follows.First of all,we need to build signal acquisition module.Because the hardware is different,we set up two signal acquisition modules.One is based on Compact RIO,the other is based on PXI.Secondly,we discussed the location technology of TDOA,including the time delay estimation and target localization.This paper simulates the several weighting funciton of the Crosspower Spectrum Phase technique.We realized the time delay estimation algorithm based on sceond correlation combining with the Hilbert transform.This paper introduces four common location methods and SI-LSEE method.Then,we realize them on LabVIEW.Computer simulation results show that the time delay estimation algorithm based on sceond correlation combining with the Hilbert transformand SI-LSEE method will give better result in the environment of low SNR.Again,on the basis of single array positioning,we studied the network distributed sensor array location.We realized the direction finding cross location method and simulated the positioning error under different topology and compared the performance.Finally,we conducted field test.We build the hardware system and realized the software programming.We counted the experiment results and analized them.The final result shows that,the system we build has stable function.