The operation method of matching the topographic map with the GPS equipment by using the GPS track

Abstract

The present invention provides an operation method for calibrating and matching topographic maps and GPS devices by using GPS tracks, which includes: firstly judging whether the topographic maps need to be calibrated or to modify GPS parameters; Line elements such as ridges and valleys, and then continuously record the track according to the design route and project it on the map in the form of a line file according to the corresponding parameters. Finally, the line file is calibrated and matched with the line elements in the map to achieve calibration and matching between the topographic map and the GPS device. Purpose. Utilizing the present invention, when the topographic map does not match with the GPS equipment and there is no conversion parameter, calibration and matching can be carried out through the internal line elements of the topographic map and the GPS track. Compared with the traditional method of calibrating and matching by point to point, the present invention Not only does it have low requirements for topographic maps, but it is also simple, efficient, accurate and safe.

Description

Technical field [0001] The present invention relates to a topographic map and GPS matching device calibrating method, particularly relates to a method of operating the track utilizes a topographic map by using GPS equipment is calibrated with the GPS matching. Background technique [0002] FIG topographic field work is necessary maps, which is a basic expression of field work content maps FIG surface, especially the high work terrain shape requirements, therefore, topographic map and a GPS device match, directly field work related to the quality of content, but also affect post-data interpretation and work arrangements. [0003] There are topographical maps and GPS devices to match a variety of methods, the most accurate way is through the national mapping agency to buy local workspace National Triangulation parameters as well as the regional topographic maps, GPS parameters calculated by the triangulation point known parameters, directly through topographic map parameters with G...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many ways to match the topographic map with the GPS device. The most accurate method is to purchase the local national triangle point parameters of the work area and the topographic map of the area through the State Bureau of Surveying and Mapping, calculate the GPS parameters through the known triangle point parameters, and directly pass The topographic map parameters are matched with the GPS device parameters. This method is highly accurate and the coordinates are absolutely accurate. However, because the national triangle point parameters are state secrets, the purchase procedures are complicated, difficult, and long. The risk of leaking the national triangular point parameters. Therefore, the national triangular point parameters and topographic maps are generally only purchased in areas where detailed work is required or areas that require extremely high accuracy of topographic maps

[0004] However, in some field work areas where the coordinates do not need to be absolutely accurate, but only relatively accurate, or where the national triangle point parameters cannot be purchased, or where there is no relevant information abroad, the traditional method is generally to use as small as possible, and The prominent markers are used as reference points to calibrate and match the topographic map with the GPS equipment. This method is based on point-to-point calibration. The calibration accuracy is greatly affected by the error of the calibration points, and it is also related to the identification of the markers by the technician. In the absence of In the case of obvious markers, technicians are required to climb to the mountain, which is a labor-intensive and dangerous job

Images