mvco, waves, adcp, q2o
http://mmisw.org/ont/mmi/resourcetype/platform
processing and qc for mvco adcp/waves
Janet Fredericks
not specified
processing and qc for mvco adcp/waves
20120217T224323
process
Janet Fredericks
mvco_processing description
process
2012-02-17T22:43:23+0000
Janet Fredericks
2012-02-17T22:43:23+0000
mvco
http://mmisw.org/ont/mvco/process
Process
Notes
Equations(s)
Definition
ID
ShortName
Reference
Meijering, Erik (2002), A chronology of interpolation: from ancient astronomy to modern signal and image processing, Proceedings of the IEEE 90 (3): 319â342, doi:10.1109/5.993400
A process that interpolates over data flagged bad in a time series by using linear interpolation methods; Returns the vector y linearly interpolated over all interior NaNs, while Exterior NaNs are set to the nearest non-NaN value
LinearInterpolation
linearInterpolation
linearInterpolation
http://mmisw.org/ont/q2o/reference/qartod_waves_2007
Spikes are defined as points more than M times the standard deviation away from the series mean. A spike is flagged (keeping the timeSeries). The algorithm should iterate over the series multiple times. The data provider defines M and P iterations. It is similar to the q2o/spikeTest but only flags the outliers so they can be counted before interpolation.
FlagOutliers
flagOutliers
flagOutliers
http://mmisw.org/ont/q2o/reference/q3
Processing steps that perform QC tests (Q2OTimeseriesTests) and compute singlet wave statistics from interpolated pressure time series
PQ_Chain
pressureQCchain
pressureQCchain
A test that is conducted on a time series to replace points that lie within a minimum and maximum range. Points that fall outside the min/max are flagged (NaN).
rangeSeriesTest
rangeSeriesTest
rangeSeriesTest
Dean, R.G. and R. A. Dalrymple, 1984. Water Wave Mechanics for Engineers and Scientists, Englewood Cliffs, N.J., Prentice-Hall, Inc., 353 pp.
Triplet waves processing that converts pressure (P) output from the PQ_Chain and horizontal velocity (U) and vertical velocity (V) from the VQ_Chain to spectral estimates for computation of wave direction
PUV
puvAnalysis
puvAnalysis
A test that is conducted on a time series to replace points that lie above a minimumThreshold (min) with a flagged value (NaN).
minThresholdSeriesTest
minThresholdSeriesTest
minThresholdSeriesTest
http://mmisw.org/ont/q2o/20081117T132316/general/fullreference, IAHR working group on wave generation and analysis,1989. List of sea state parameters. Journal of Waterway, Port, Coasta land Ocean Engineering 115 6, pp. 793-808.
Processing of the qc'd velocity and pressure records to produce estimates of wave height, period and direction (using PUV analysis)
VelocityObsProcess
velocityObsProcess
velocityObsProcess
The processing chain which includes the dataGapTest, RangeSeriesTest, SpikeTest, PercentGood and linear interpolation of the qc checked timeseries
TimeseriesChain
timeseriesChain
timeseriesChain
http://mmisw.org/ont/q2o/reference/q3
Processing steps that include checkBeamIntensity, checkCorrelationCoefficient and theTimeseries_chain
VQ_Chain
velocityQCchain
velocityQCchain
Dean, R.G. and R. A. Dalrymple, 1984. Water Wave Mechanics for Engineers and Scientists, Englewood Cliffs, N.J., Prentice-Hall, Inc., 353 pp.
The processing of QC'd pressure time series to produce wave height and frequency using linear wave theory
PressureObsProcess
pressureObsProcess
pressureObsProcess
A test to flag a single value that is above a minimumThreshold
minThresholdTest
minThresholdTest
minThresholdTest
Random data: Analysis and measurement procedures J. S. Bendat and A. G. Piersol, 2nd edition, 566 pages, John Wiley, New York, 1986
compute the standard deviation of a time series
computeStandardDeviation
computeStdDev
computeStdDev