What is remote sensing, and how can it be used?

In the area of geospatial technologies, remote sensing generally refers to satellite imagery or aerial photography.
Remote sensing provides the ability to observe an object without coming in direct contact with that object. Your eyes are extremely sophisticated remote sensing devices!
The “bird’s eye” view from the satellite or airplane, in combination with its ability to store, analyze, and display the sensed data, make remote sensing a powerful tool. Remote sensing techniques generally fall into two categorizes: active remote sensing …