Posted by MarkB_MI on June 27, 2016 at 05:36:34 from (198.208.159.18):
In Reply to: GPS question update posted by notjustair on June 26, 2016 at 19:09:22:
Your "GPS guy" doesn't have an inkling as to how GPS actually works.
Imagine a circle on a map of the earth several thousand miles in diameter. With a single satellite, all your GPS receiver can tell you is that you're somewhere on that circle.
Now imagine two circles intersecting at two points. With two satellites the GPS knows you are at one of those two points.
The GPS needs at least three satellites to fix your position down to a single point. Each additional satellite improves the accuracy of its position fix.
High-end GPS receivers such as those used in agriculture use a variety of techniques to improve their accuracy. If your dealer doesn't understand terms like WAAS, WAD and RTK he doesn't understand the products he sells.
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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