Is there any way to get the change of lake area?

Test center: Special topic on the basic working principle of remote sensing: Analysis: Remote sensing technology is to use optical instruments and electronic instruments to receive electromagnetic wave signals emitted or reflected by ground objects on airplanes, spaceships and satellites at a certain distance from the earth, record them in the form of image films or data tapes, transmit them to the ground, and finally analyze them. Reveal the characteristics, properties and changes of objects. Remote sensing is remote sensing. Can use aircraft, spacecraft, satellites, optical instruments, electronic instruments to obtain ground images. Analyzing this image can monitor the changes in Jia Hu. So comments: A: Remote sensing technology is mainly used in resource investigation, disaster monitoring, environmental monitoring, engineering construction and planning, and others, including: military reconnaissance, maritime traffic, marine fisheries and so on.