DisneyGentleman
Well-Known Member
It's surprising how many people think Google Earth imagery if from satellites, when in fact most of it is from airplanes.It's surprising how many people I know think Google Earth is live, and try to get me to see them on it.
"The traditional aerial survey involves mounting a special gyroscopic stabilized camera in the belly of an airplane and flying it at an elevation of between 15,000 feet and 30,000 feet, depending on the resolution of imagery you're interested in. As the plane takes a predefined route over the desired area, it forms a series of parallel lines with about 40 percent overlap between lines and 60 percent overlap in the direction of flight."
Also, it's surprising how many people think that a satellite can hover over a location. The only orbital location that can stay over a fixed point on earth is a geostationary orbit, which is at an altitude of over 22,000 miles and on the equator. This is hardly a location for a camera.