Radar detection technology uses the data that the transmitted microwave signal returns to the receiver after reflection and scattering. By processing these data, we can get the explanation of the height, shape and composition of ground objects. Therefore, radar detection technology is widely used in topographic mapping, land use classification, hydrogeological investigation and other fields.
Knowledge expansion: besides radar detection technology, microwave remote sensing technology also includes passive microwave remote sensing technology, such as microwave radiometer measuring ocean temperature and sea ice thickness; And active microwave remote sensing technology, such as microwave interference measurement of atmospheric turbulence. Generally speaking, microwave remote sensing technology is a very powerful remote sensing tool, which can provide a lot of important information about the earth's surface and play an important role in agriculture, environmental monitoring, disaster management and other fields.