History of Agricultural Engineering Local Yield Measurement with GPS in Serial Combine Harvesters 1990

Following first investigations of local yield determination in combine harvesters in 1990 very first GPS-based series of measurements with two serial combine harvesters were realized on farm level. After developing and integrating the data acquisition equipment local yield measurement was executed at two sites in Bavaria and another one in Austria. Although the coverage of the satellite configuration was poor and the data transfer from the mobile harvesting technology was time consuming the yield measurement was free of problems and interruptions. The whole process of the measurement campaign and first yield maps are presented.