Q. I know google satelite map has real images, but those are just pictures, is there a place to go and see live video? Or to be able to take a photo of your land?
A. The closest to live images are the GEOS weather satellite images, available from a number of sites. These are very low resolution. High resolution satellite imagery is available only to the military and intelligence services, as the ability to zoom in on a particular area requires the satellite's orbit be altered, a very expensive proposition.
Sources like Google Earth use images from many sources, primarily aerial photography (from airplanes rather than satellites). Higher resolution imagery is sometimes available on a local basis. For example, Simcoe County, in which I live, has an interactive mapping service online, which uses relatively up-to-date (April 2008) colour aerial photographs of the entire county. This is far more detailed and up-to-date than images of the same area in Google Earth. In fact the image of my area there must be at least 20 years old, based on what can be seen of highway construction.
Sources like Google Earth use images from many sources, primarily aerial photography (from airplanes rather than satellites). Higher resolution imagery is sometimes available on a local basis. For example, Simcoe County, in which I live, has an interactive mapping service online, which uses relatively up-to-date (April 2008) colour aerial photographs of the entire county. This is far more detailed and up-to-date than images of the same area in Google Earth. In fact the image of my area there must be at least 20 years old, based on what can be seen of highway construction.
Can google maps be wrong about what direction north is?
Q. Google earth shows that my house is facing south, but my father says that can't be true.
A. Well, the Google Earth images are compiled from satellite and aerial images which are then stitched together. Let's say they made a mistake and your house was rotated 45 degrees, then everything else in that image would be rotated 45 degrees - other buildings would be shown in the wrong places, roads would run in the wrong directions and not join up where they should. All in all, I'd say it is unlikely.
There is one very easy way to find out - if the sun is shining directly on the front of your house at noon then your house faces south.
There is one very easy way to find out - if the sun is shining directly on the front of your house at noon then your house faces south.
What web site will have the most up dated aerial maps of earth?
Q. I am looking for a web site that has up to date aerial photo of the land where I live. Where I live it is showing a photo that is several years old.
A. get google earth,
they have low cost subscription,
they have low cost subscription,
Powered by Yahoo! Answers
No comments:
Post a Comment