Traditional Culture Encyclopedia - Photography and portraiture - What does topographic survey mean?
What does topographic survey mean?
There are three main methods of topographic survey: field survey, photogrammetry and satellite remote sensing. Field measurement refers to the direct measurement and observation of the surface by manpower or instruments, such as lofting method, theodolite method and electronic ranging method. Photogrammetry is the use of aerial photographs to measure the terrain, such as aerial photogrammetry, stereo vision measurement and so on. Satellite remote sensing is to measure and shoot remote sensing images by satellite, and then analyze and process the images to obtain various terrain information of the earth's surface.
Topographic survey is a widely used surveying and mapping technology. It plays a great role in social, economic and scientific development. In urban planning and management, topographic survey can help planners design urban planning into a city that is conducive to transportation, ecology and environmental protection. In agriculture and forestry, topographic survey can also provide detailed information about land and help farmers and forestry workers make better use of land resources. In oil and mineral exploration, topographic survey can provide necessary support for finding mineral resources such as oil, metal mines and diamonds. In environmental protection, topographic survey is helpful to grasp the ecological conditions of oceans, lakes and rivers, and find pollution sources and environmental problems.
- Related articles
- What's the use of photography?
- IPhone shooting time-lapse photography skills iphone time-lapse photography function tutorial
- How to judge whether the camera is damaged after the iphone takes a solar eclipse?
- Baotou tourist attractions daquan
- When friends get together, what can we do besides eating and singing?
- Top ten scenic spots in Macao
- Friend quan loan advertisement
- Zhan Kuliang's entrepreneurial story
- Ode to Joy 3 has no "five beauties". Don't you consider renaming it?
- Childhood impression five hundred words composition