How to distinguish between GIS (geographic information system), RS (remote sensing) and GPS

One, the nature of the work is different

1, RS is to obtain information The use of remote sensing technology to promote the collection of environmental information means of innovation, thus the emergence of remote sensing mapping.

2, GPS to obtain specific location information The establishment of the world's geodetic coordinate system, the refinement of the shape of the Earth, to fill the gaps in the measurement of the ocean, to broaden the field of application of geodesy, to provide navigation and real-time positioning information, the traditional conventional measurements to provide a means of detection.

3, GIS is the RS, GPS and other channels of information processing system is geography, surveying, cartography, remote sensing and computer science combined with the development of a new fringe disciplines. In these related disciplines, technology, surveying and remote sensing is mainly from the perspective of the data source for the GIS services, while geography and cartography is the main area of concern for the application of GIS.

Second, the research and development time is different

1, GIS: 1967, the world's first real application of geographic information systems by the federal Ministry of Forestry and Rural Development in Ottawa, Ontario, Canada, research and development.

2, RS: developed in the early 1960s of this century, an emerging technology, began for aerial remote sensing, since 1972, the United States launched the first Landsat, marking the beginning of the era of aerospace remote sensing.

3, GPS: is the United States from the 1970s began to develop, lasted more than 20 years, cost 20 billion U.S. dollars, in 1994 fully completed.

Expanded information:

GPS global positioning system uses:

1, accurate timing: widely used in astronomical observatories, communication systems base stations, television stations

2, engineering construction: roads, bridges, tunnels, the construction of a large number of GPS equipment for engineering measurements

3, weapons navigation: global positioning system (GPS) is a global navigation system (GPS).

3, weapons navigation: Global Positioning System precision guided missiles, cruise missiles? Vehicle navigation: vehicle scheduling, monitoring system ship navigation: ocean navigation, port / inland water diversion Aircraft navigation: route navigation, approach landing control navigation, satellite orbit positioning

4, personal positioning: vehicle anti-theft systems, cell phones, PDA, PPC and other communications mobile devices anti-theft, electronic maps, positioning systems, children and special populations of the anti-lost system

Baidu Baidu, the world's leading provider of GPS equipment, is the world's leading provider of GPS equipment. Baidu Encyclopedia - GIS

Baidu Encyclopedia - RS (Remote Sensing)

Baidu Encyclopedia --GPS