Implementation a of 3-axis inclinometer for RTK-GPS antenna correction of EMI sensor platform.

Abstract Geophysical sensor measurements are often made by towing a mobile platform over the soil surface. Surface irregularity and inadequate travel speed can significantly reduce the stability of the platform and negatively affect the quality of the measurements.The objective of this study was implemented and developed a methodology to correct the RTK-GPS location of a mobile sensor platform for continuous EC a measurements with associated GPS locations at discrete time intervals. A 3-axis inclinometer was mounted directly above the EMI sensor and below the GPS antenna to monitor platform pitch, roll and yaw. Northing and Easting showed similar percentages of correction 30%. The results indicate that elevation measurements for generating DEMs, and geo-referencing geophysical measurements require additional correction for antenna deviations. Key words: Geophysical sensor, soil apparent electrical conductivity (ECa), inclinometer, precision agriculture 1. Introduction

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