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Farm Machinery
Precision Farming & GPS
Losing satellites under trees
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<blockquote data-quote="Pheasant Surprise" data-source="post: 6520543" data-attributes="member: 1103"><p>Unfortunately it doesn’t work like that.</p><p></p><p>Your receiver needs direct line of sight to the sky. It calculates your precise position based on the radio distance in a straight line to each and every satellite it can see.</p><p></p><p>The receiver is basically “counting” the exact number of wavelengths it is from each satellite to work out the distance from it to the bird. Using what is effectively fancy mathematical geometry, it can then work out its position, knowing the distance from several satellites, and knowing the position of the satellite as it zooms overhead.</p><p></p><p>Bouncing or repeating these signals would only make it worse / impossible to calculate an accurate position.</p></blockquote><p></p>
[QUOTE="Pheasant Surprise, post: 6520543, member: 1103"] Unfortunately it doesn’t work like that. Your receiver needs direct line of sight to the sky. It calculates your precise position based on the radio distance in a straight line to each and every satellite it can see. The receiver is basically “counting” the exact number of wavelengths it is from each satellite to work out the distance from it to the bird. Using what is effectively fancy mathematical geometry, it can then work out its position, knowing the distance from several satellites, and knowing the position of the satellite as it zooms overhead. Bouncing or repeating these signals would only make it worse / impossible to calculate an accurate position. [/QUOTE]
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Precision Farming & GPS
Losing satellites under trees
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