Operational Filter Design for Non-Contact Water Level Sensors Deployed in an Open Ocean Environment: U.S. Army Corps of Engineers Field Research Facility, Duck, NC July 4 – July 25, 2008 Test Period.
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Test comparisons of four microwave water level sensors and one laser device for sensing water level were conducted at selected sites on the Atlantic and Pacific coasts as well as Lake Michigan. The microwave and laser devices being evaluated are ‘open-air’, non-contact water level sensors that differ from other sensors in having no stilling well, wave guide or other isolating structure. In this configuration, 1-Hz water level series were seen to contain considerable noise as well as variance at both tidal and non-tidal frequencies, including unrestricted wind-wave variance at higher frequencies. NOS applications related to the astronomical tide (times and heights of high and low water, duration of rise and fall, tidal datum determinations, tidal harmonic analysis, tidal prediction) require effective low-pass filtering to remove unwanted variance as well as noise. A primary filter is required to produce noise-free data at regular intervals that will enable the performance of one senso.....
PublisherJohn D. Boon Marine Consultant, LLC
Gloucester Point, VA
Sustainable Development Goals (SDG)14
Essential Ocean Variables (EOV)Sea surface height
Maturity LevelTRL 5 System/subsystem/component validation in relevant environment
Best Practice TypeManual (incl. handbook, guide, cookbook etc)
CitationBoon, J. (2008) Operational Filter Design for Non-Contact Water Level Sensors Deployed in an Open Ocean Environment. Gloucester Point,VA, John D. Boon Marine Consultant, LLC, 28pp, DOI: http://dx.doi.org/10.25607/OBP-916
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