Coordinate measuring method and device of GPS-RTK satellite-signal-free point

Abstract

The invention discloses a coordinate measuring method and device of a GPS-RTK satellite-signal-free point. A GPS measuring device is combined with a laser range finder, a coordinate position of a signal-free region is calculated indirectly via a mathematic method. According to the measuring device and method, extra measuring staff is not required, instead, a work staff can complete field work measurement by implementing extra observation twice near a signal-free position, carrying out laser range finding, and recording an observation code, the measuring coordinate, and the inclined distance and the vertical angle relative to a signal-free point. In office work, the coordinate is calculated automatically according to a designed calculation method, and a practical coordinate value of the signal-free position can be obtained. The device and method improve the speed and efficiency of GPS-RTK field-work observation greatly, and the coordinate precision of the signal-free point is improved compared with other methods due to rigorous mathematical operation.

Description

technical field [0001] The invention relates to a GPS-RTK mobile measuring device and method. Background technique [0002] GPS measurement methods mainly include static, fast static, dynamic measurement, RTK (Real-time Kinematic) measurement, etc. Among them, static, fast static, and dynamic measurements need to be solved afterwards to obtain centimeter-level accuracy, while GPS-RTK Real-time differential positioning is a measurement method that can obtain centimeter-level positioning accuracy in real time in the field, which greatly improves the efficiency of field operations. GPS-RTK operation mode such as Figure 9 As shown, the reference station transmits its observation value and station coordinate information to the rover station through the data station, the rover station receives the data from the reference station, and the rover station receives the GPS satellite data at the same time, and then combines the two data for real-time differential calculation. Obtain c...

AI Technical Summary

Problems solved by technology

In the actual GPS-RTK mobile measurement process, due to the occlusion of terrain and ground objects, such as under the eaves, under trees, under steep slopes, near high-rise buildings, etc., the satellite signal is weak or there is no satellite signal, resulting in house corners, trees, etc. Key positions such as the position and the lower edge of the steep slope cannot be observed

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