Cadastral surveying method based on foundation laser radar

Abstract

The invention provides a cadastral surveying method based on a foundation laser radar. The cadastral surveying method based on the foundation laser radar comprises field data acquisition and interior data processing, wherein the field data acquisition includes the steps of measurement of control points and scanning operation of the laser radar; the interior data processing includes pre-processing of point cloud data, point cloud registration and mapping operation. According to the cadastral surveying method based on the foundation laser radar, on the basis of an existing mature technology, a GPS is used in cooperation with the laser radar so that large-scale ground object position information can be quickly obtained. Compared with a traditional measurement method, the cadastral surveying method based on the foundation laser radar has the advantage that the project cycle is greatly shortened; compared with an aerial surveying method, the cadastral surveying method based on the foundation laser radar has the advantages that required personnel is fewer, the operation steps are simple and easy to realize, and the field efficiency is high. The laser radar can reach a high accuracy level so that high-precision cadastral data products can be obtained in a short cycle.

Description

technical field [0001] The invention belongs to the technical field of surveying and mapping, and in particular relates to a cadastral survey method based on ground-based laser radar. Background technique [0002] Cadastral surveying is an important basis for land management. It is based on cadastral surveys and uses surveying methods to accurately measure the location, size, boundary, coordinates of ownership boundary points, parcel area and cadastre map to meet the needs of land management departments and other national economic construction departments. In order to meet the needs of cadastral management, on the basis of land ownership investigation, with the help of instruments and scientific methods, measure the ownership boundary, position, shape and land type of each piece of land in a certain area, and calculate its area. Drawing cadastral maps, professional surveying and mapping work to provide a basis for land registration. It is the technical basis of land manage...

AI Technical Summary

Problems solved by technology

The use of aerial surveying methods for cadastral surveys is susceptible to interference from various factors, resulting in a decline in data accuracy and quality, and the shadows formed by prominent ground features affected by light will also affect image interpretation and processing

First of all, aerial surveys are limited by weather factors. In the case of severe cloud cover, data collection cannot be carried out. At the same time, the processing accuracy of aerial images is poor.

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