DECONVOLUTION OF SITE-SPECIFIC YIELD MEASUREMENTS TO ADDRESS PEANUT COMBINE DYNAMICS

摘要

During the development of a peanut yield monitoring system, experiments were conducted on a two-row peanut combine to determine the duration of time lag between pickup and yield measurement, and to characterize the convolution of peanut flow within the combine. The research indicates that the two-row peanut combine used in the experiment subjects harvested product to significant convolution. A simple time lag correction will not recover the site specific (short term accuracy) of yield measurements. The distance and time period required to achieve a yield estimate error less than 20% (95% confidence) is greater than 19.7 m (17 s) for simple time lag correction while it is 5.8 m (5 s) for deconvoluted data. The net result is that smaller regions of yield variability may be recognized with greater confidence using the deconvolution method than with the simple time delay method.