Vis-NIR equipped soil penetrometer
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Soil penetrometers capable of measuring soil reflectance along the direction of insertion of the penetrometer are provided. The penetrometer can house an array of sensors, such as, for example, a Vis-NIR reflectance sensor, a load cell, a displacement sensor, and a moisture sensor. The reflectance data collected using the penetrometer can allow the interpretation and quantification of soil constituents and contaminants at high vertical resolution, such as 3 cm or more.
Morgan, Cristine; Ge, Yuefeng; Brown, David; Bricklemyer, Ross (2019). Vis-NIR equipped soil penetrometer. United States. Patent and Trademark Office; Texas A&M University. Libraries. Available electronically from