precision—¹The degree of refinement in the performance of all operation, or the degree of perfection in the instruments and methods used when making the measurements. ² A measure of the uniformity or reproducibility of the result. Precision relates to the quality of the operation by which a result is obtained and is distinguished from accuracy which relates to the quality of the result.

precision, geometric dilution of [GPS]—The multiplicative factor that modifies ranging error. It is caused by the geometry between the receiver and the satellites and referred to as GDOP or DOP.

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Source: NSPS “Definitions of Surveying and Related Terms“, used with permission.

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