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Scans are usually perpendicular to the flight paths. 

RS data from satellites can currently provide higher resolutions than aircraft. 

For satellite-based data, cost varies by image [type] and [size], the level of [processing] required, the [timeliness] of data, and the [spatial] [resolution] required. 

Passive systems have greater use than active systems in agriculture toay. 

These sensors are light sensitive and create an [electrical] [signal] proportional to the amoint of electromagnetic energy that hits them. 

Geometric correction is accomplished by identifying and using [ground] [control] [points]. 

When electromagnetic energy strikes an object, the energy is either [reflected], [transmitted], or [absorbed]. 

Cloud cover can produce a reduction in the level of light hitting an object. This is known as                  . 

The signals received by passive sensing systems are generated by natural [solar] [radiation]. 

In remote sensing we look at all bands.