Traditional Culture Encyclopedia - Photography major - How much can Earth observation technology related to surveying and mapping do at present?
How much can Earth observation technology related to surveying and mapping do at present?
1, satellite navigation and positioning system. It includes global GNSS (currently operated by American GPS, Russian GLONASS, Galileo under construction in Europe and China Beidou), regional GNSS (such as Japanese quasi-zenith satellite system (QZSS) and Indian related systems) and various augmentation systems. Function: realize positioning, navigation, time service (PNT) and other functions.
2. Remote sensing RS. Using sensors to obtain surface information for analysis and processing.
3. Photogrammetry. The CCD camera placed on the space vehicle is used to obtain the ground photos, and the photos are matched, measured and interpreted.
3. Airborne lidar measurement.
4. Interferometry technology.
5. Satellite altimetry.
6. Satellite gravity measurement.
7. Very long baseline interferometry.
8. Laser satellite survey and laser lunar survey.
Broadly speaking, the latter two can also be regarded as earth observation technologies. Please refer to Baidu Encyclopedia for details.
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