You may have noticed that in our specifications for each GPS receiver used with a differential correction receiver, the accuracy expected from mobile systems is greater than for the stationary units. Since we develop receivers specifically for agriculture, our designs and software take in several factors inherent to growing and harvesting operations, resulting in an increase in accuracy. The receivers use all readings and these factors to compute predictions of the machinery's path and speed, and verifies this information. Also, this accuracy comparison is based on readings collected within the same amount of time. The animation below demonstrates how our receivers increase accuracy down the row.
Some readings fall on either side of the tractor, and usually ahead or behind the machinery as well.
Very few readings fall exactly along the tractor's path and position in the field. This inaccuracy is typical of most differentially-corrected GPS receivers on the market today. Our receiver design and software allows us to more precisely determine the tractor's true path with a higher degree of accuracy. Instead of just accepting these readings as they are, we use different mathematical algorithms to determine the tractor's position more precisely. A simple example was shown in the previous animation.