What is synthetic aperture radar?

Synthetic Aperture Radar (SAR) is a high-resolution imaging radar, which can obtain high-resolution radar images similar to optical photography under meteorological conditions with extremely low visibility. It has the characteristics of all-weather and all-weather observation without the restrictions of light and climate conditions. It can even obtain the information covered by the surface or vegetation. These characteristics make it widely used in agriculture, forestry, water, geology, natural disasters and other civil fields.