Coordinate measurement method and device for a GPS-RTK point without satellite signal

Abstract

The invention discloses a GPS-RTK coordinate measurement method and device for a satellite-free signal point. The invention combines a GPS measurement device with a laser range finder, and uses a mathematical method to indirectly calculate the coordinate position of a signal-free area. The measuring device and method do not require additional measuring personnel, and only require the operator to make two additional observations near the no-signal position, and perform laser ranging, and record the observation code, measurement coordinates, and the slant distance between the no-signal point And vertical angle, you can complete the field measurement. The office calculation performs automatic coordinate calculation according to the designed calculation method, and the actual coordinate value of the position without signal can be obtained. This device and method greatly improves the speed and efficiency of GPS-RTK field observation. Due to the rigorous mathematical operation, The coordinate accuracy of its non-signal point is improved compared with other methods.

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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