Surveying and mapping data acquisition system based on geospatial information data surveying and mapping

Abstract

The invention provides a surveying and mapping data acquisition system, which comprises a regional data capture subsystem, a regional data judgment subsystem, a regional expansion subsystem, a regional data acquisition subsystem and a regional data updating subsystem, the regional data capturing subsystem captures geographic space information of an existing region from a geographic space information system; the regional data judgment subsystem judges whether the geographic space information of the existing region meets a preset condition or not; the regional expansion subsystem is used for performing regional expansion on the existing region when the geographic space information of the existing region meets a preset condition to obtain an expansion region corresponding to the existing region; the regional data acquisition subsystem acquires extended geographic space information of an extended region; and the regional data updating subsystem updates the extended geographic space information of the extended region to the corresponding existing region. According to the technical scheme, surveying and mapping data of an existing geographic space information system can be fully utilized, and meanwhile the data precision can be updated according to the time period.

Description

technical field [0001] The invention belongs to the technical field of surveying and mapping, and in particular relates to a surveying and mapping data acquisition system based on geospatial information data surveying and mapping. Background technique [0002] Data Acquisition (DAQ) refers to the automatic collection of non-electric or electrical signals from analog and digital units under test such as sensors and other devices to be tested, and sends them to the host computer for analysis and processing. The data acquisition system is a flexible and user-defined measurement system combined with measurement software and hardware products based on computers or other special test platforms. [0003] Surveying and mapping refers to the measurement, collection and drawing of the shape, size, spatial location and attributes of natural geographical elements or surface artificial facilities, so as to obtain surveying and mapping data. [0004] Geographic information system technol...

AI Technical Summary

Problems solved by technology

[0006] However, the inventor found in practical applications that the above-mentioned prior art requires complex image analysis processing and comparison calculations in actual implementation, and the criteria for judging whether an update is required is also statically changing and cannot In addition, the above-mentioned existing technology itself does not clearly define the basis for the re-acquisition of surveying and mapping data, for example, the data of which areas should be updated

Images