What impact has the emergence and development of geographic information technology had on geography and surveying?

Digital information products that can directly, quickly and automatically obtain spatial targets, providing GIS with rich and more real-time information sources.

With the support of computer hardware and software systems, it is a technical system that collects, stores, manages, calculates, analyzes, displays and describes relevant geographical distribution data in all or part of the earth's surface (including the atmosphere). . The objects processed and managed by the geographic information system are a variety of geospatial entity data and their relationships, including spatial positioning data, graphic data, remote sensing image data, attribute data, etc., and are used to analyze and process various phenomena distributed within a certain geographical area. and processes to solve complex planning, decision-making, and management problems.

Geodesy, engineering survey, mine survey, cadastral survey, aerial photogrammetry and remote sensing technology provide positioning data of various scales and precisions for spatial entities in GIS; electronic speedometer, GPS global positioning The use of modern surveying and mapping technologies such as analytical or digital photogrammetry workstations and remote sensing image processing systems can directly, quickly and automatically obtain digital information products of spatial targets, provide GIS with richer and more real-time information sources, and promote GIS Develop to a higher level.

Extended information:

Relevant requirements for geographic information technology:

1. Enter data into the system - it occupies the majority of GIS practitioners Time, there are multiple ways to enter data into a GIS where it is stored in a numerical format.

2. GIS can perform data reconstruction to convert data into different formats. GIS can convert satellite images into vector structures by generating lines around all cells with the same classification while determining the spatial relationships of cells, such as adjacency and inclusion.

Baidu Encyclopedia-Geographic Information Technology