Precise positioning method and device of array layout

Abstract

The invention relates to the fields of microtremor exploitation or other engineering vibration tests, and particularly relates to a precise positioning method and device of an array layout. A direct positioning process of a target point is divided into two processes of the positioning of three control points near the target point and positioning of the target point which is controlled by the three control points. The former adopts a GPS static baseline measuring method, and the latter adopts a measure tape measuring method. The invention combines the advantages of the two methods and realizes a precise, simple and reliable method. The invention also relates to two positioning devices for implementing the method, which includes a microprocessor, a single frequency measuring type GPS module, an input unit, a memorizer and a display screen, wherein one of the positioning devices is used for reference point observation and has the functions of storing and reading the GPS data, and the other one of the positioning devices is used for movement observation and also has the functions of target point setting, and graphic display.

Description

technical field [0001] The invention relates to the fields of micro-motion exploration and engineering vibration testing, in particular to a precise positioning method and device for the layout of micro-motion test bench arrays. Background technique [0002] In the field of micro-motion exploration and engineering vibration testing, in order to detect the vibration information in an area, many vibrators are often formed into an array, and the field signals are observed at the same time. There are certain constraints on the relative positional relationship of each observation point of the array. For example, the micro-motion spatial autocorrelation method requires the observation array to be circular, and the observation instruments at each point have good consistency. Generally, the correlation between the instruments is required. The sex is above 0.999, and the phase difference is within ±(3-5)°. That is, when the micro-movement surface wave phase velocity is at least 100m...

AI Technical Summary

Problems solved by technology

If a wireless radio frequency module is used, in order to achieve its nominal communication distance, the antenna must be set up relatively high. When it is higher than the GPS antenna, it will interfere with the GPS signal and even cause the GPS receiver to fail to work normally.

Moreover, the communication quality cannot be guaranteed, and it is susceptible to interference; 2. The antenna mast of the GPS antenna has a certain height. During the movement, the unevenness or shaking of the site will have a certain impact on the positioning accuracy. In fact, centimeter-level positioning accuracy is difficult to achieve or guarantee; 3. The GPS signal at the target point needs to be of good quality. If there is no GPS signal or the signal is poor at the target point, the positioning task will actually be impossible to complete

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