seasonder_getBinsRadialVelocity {SeaSondeR} | R Documentation |
Calculate Radial Velocities for Each Doppler Bin
Description
Computes the radial velocities for each Doppler bin interval's high boundary for a SeaSonde radar cross-section (CS) object, as typically visualized in SpectraPlotterMap. This function utilizes the Doppler shift frequency alongside the radar's wave number and Bragg frequency to transform frequency measurements into radial velocities. The calculation is based on the relationship between the Doppler shift frequency and the velocity of surface currents within the radar's field of view.
Usage
seasonder_getBinsRadialVelocity(seasonder_cs_object)
Arguments
seasonder_cs_object |
A SeaSondeRCS object created using |
Details
Specifically, the radial velocity v = (Freq - BraggFreq)/(2 * k_0)
is used, where v
is the radial velocity, Freq
is the Doppler
shift frequency for the bin, BraggFreq
is the Bragg frequency
(negative for frequencies below 0 and positive for frequencies equal or above 0),
and k_0
is the radar wave number divided by 2\pi
.
Value
A numeric vector containing the radial velocities (in m/s) for each Doppler bin, calculated for the high boundary of each Doppler bin interval. The velocities provide insight into the scatterers' radial movement within the radar's observation area.
See Also
seasonder_getDopplerBinsFrequency
,
seasonder_getBraggDopplerAngularFrequency
,
seasonder_getRadarWaveNumber