| Geophysical prospecting is a commonly used method for resource and geological prospecting.Geophysical prospecting has excellent applications in the detection of mineral deposits,geological structures,hydrological surveys,and geological mapping through the use of magnetotelluric,electrical prospecting,seismic prospecting and other methods.The analysis of the results of some methods of geophysical exploration is closely related to the coordinates of the measuring points.These methods need to perform data calculations based on the values measured at the corresponding coordinates and then carry out geological inferences.Therefore,the terrain environment and the coordinates of the measuring points have a greater impact on them.The traditional method of manually measuring measuring points consumes a lot of energy,and in complex terrain,it is difficult to manually measure the terrain environment.Therefore,the development of a3 D wireless positioning system for geophysical survey detection point positioning has great theoretical and practical significance for geophysical detection point acquisition and data analysis.Based on the UWB wireless communication technology,the article designs the positioning system from the two aspects of software and hardware by studying the ranging principle,positioning principle,positioning algorithm and other theories of UWB technology,and develops a set of three-dimensional positioning system for geophysical exploration and positioning.Wireless Location System.A number of indoor and outdoor experiments have been carried out to test the performance of the positioning system,including two-dimensional positioning experiments and three-dimensional positioning experiments.Combined with electrical prospecting,the practical application of the positioning system was tested.The main results and conclusions obtained are as follows:(1)Design and manufacture the UWB positioning system,and develop a set of threedimensional positioning system from the hardware and software.By testing the positioning accuracy of the positioning system,the positioning accuracy is analyzed from the perspective of a single coordinate axis of positioning.The test results show that the positioning system can complete the positioning work requirements,and the positioning system can obtain high-precision positioning coordinates stably and efficiently.(2)In the indoor two-dimensional positioning experiment,the positioning result of the positioning system is relatively close to the actual coordinates,the maximum positioning error in the coordinate axis is not more than 20 cm,and the positioning error of most measuring points is within 10 cm,and the positioning accuracy is high.Under the condition that obstacles are added in the indoor two-dimensional experiment,the obstacles have little effect on the accuracy of indoor positioning,and the performance of indoor positioning is relatively stable and reliable.In the outdoor three-dimensional positioning experiment,the positioning result of the positioning system is relatively close to the actual coordinates,the positioning error does not exceed 10%,and the threedimensional positioning accuracy is high.(3)In the practical application combined with electrical prospecting,by comparing the UWB positioning system with GPS and height sensors,the superiority of the performance of the UWB positioning system is analyzed and verified.The comparison results show that the UWB positioning system has higher positioning accuracy than GPS positioning,and is less disturbed by the environment.The UWB positioning system is relatively close to the measurement results of the sensor,but the UWB positioning has the advantage of wireless measurement relative to the sensor.The effect of UWB positioning system in practical application is better.(4)Combining the coordinate data of UWB positioning results with electrical prospecting data processing,and substituting the three-dimensional positioning coordinate data of survey points into the process of electrical inversion can effectively realize the precise analysis of electrical data processing.Among them,3D data combined with electrical 3D inversion technology can present the geoelectric information of the measured area three-dimensionally.In summary,it is believed that the UWB positioning system has a high application value in the measurement of object detection points.Figure [66] Table [4] References [86]... |
