Cell Phones these days have become one of the most vital element of our day to day life...it has now become a necessity of every individual...it has a lot of advantages but at the same time the consequences are far more worse.
Synthetic-aperture radar (SAR) is a form of radar in which the large, highly-directional rotating antenna used by conventional radar is replaced with many low-directivity small stationary antennas scattered over some area near or around the target area. The many echo waveforms received at the different antenna positions are post-processed to resolve the target. SAR can only be implemented by moving one or more antennas over relatively immobile targets, by placing multiple stationary antennas over a relatively large area, or combinations thereof. SAR has seen wide applications in remote sensing and mapping.