SAR Image for remote sensing

Abstract Radar was developed to detect objects and determine their range (or position) by transmitting short bursts of microwaves. Radar senses electromagnetic waves that are a reflection of an active transmission; radar is considered an active remote sensing system. Passive remote sensing refers to the sensing of electromagnetic waves which did not originate from the satellite or sensor itself. The sensor is just a passive observer Also, microwaves can penetrate light rain, clouds and be used to detect sea ice during the day and night, regardless of cloud cover. Radar interferometer is a technique that enables digital elevation mapping of Earth's surface. This paper is to understand the radar signal of SAR for remote sensing.