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Real-Time GPS and Non-Line-of-Sight Metrology



William C. Stone


I would like to pick up where Eric left off and describe the results of research which is currently underway at NIST in the field of construction metrology. Earlier I indicated that there were many technological steps along the way to implementing the real benefits of automation at a construction site. The underpinning of all of this is the need to know where things are. In the past this need has been met (in a minimal way) by static benchmarks and survey stakeouts provided by field crews. Even with digital total stations and laser or infrared based electronic distancing, this is a slow and tedious process. And it must be repeated many times during the course of a construction job as the geometry of the worked terrain changes.
NIST Interagency/Internal Report (NISTIR) - 5856
Report Number


construction, technology transfer, robotics


Stone, W. (1996), Real-Time GPS and Non-Line-of-Sight Metrology, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed June 13, 2024)


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Created May 1, 1996, Updated November 10, 2018