Cannon, M. ElizabethGehue, Hazen L. (Hazen Leslie)2005-07-292005-07-291994Gehue, H. L. (1994). GPS integrated systems for precision farming (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/116310612032450http://hdl.handle.net/1880/30472Bibliography: p. 117-123.The consequences of homogenous treatments of agricutlural fields is investigated and quantified for several farm scale test sites throughout Alberta. A series of integrated data collection systems using GPS to locate and map information such as salinity and yield are discussed in stages of design, software, hardware and implementation. Results from the spatial data analysis produced a prescription map describing the fertilizer inputs for specified regions of the field. To fulfill the variable input requirements, a real time differential GPS system integrated with a variable rate air seeder was designed and implemented at each of the test sites. The theory and preformance of the GPS equipment and techniques used to verify the accuracy and repeatability of the derived positions are discussed and results from analysis software developed are presented.xii, 123 leaves ; 30 cm.engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.S 494.5 R4 G44 1994Global positioning systemAgriculture - Remote sensingSoils - MapsSalinityCrop yieldsFertilizermaster thesishttp://dx.doi.org/10.11575/PRISM/11631S 494.5 R4 G44 1994