Evaluation of Ground Speed Sensing Devices Under Varying Ground Surface Conditions
Abstract
The objective of this study was to compare several commercially available methods of ground speed measurement under varying vegetative covers and ground conditions. Empirical field observations indicated that radar ground speed measurements show increased error as crop vegetative cover/ height increases. A low cost GPS based ground velocity sensor has been recently developed, and that system was compared to the other speed sensors as well. These systems were compared to a reference (true) ground speed. The experimental study included instrumentation of a tractor with speed sensors and a data acquisition system.
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