4.1.1.0 atmosphere.getNonDispersiveDryPhaseDelay

NRAO Home > CASA > CASA Toolkit Reference Manual

atmosphere.getNonDispersiveDryPhaseDelay - Function

4.1.1 get the integrated nondispersive dry Atmospheric Phase Delay

Description

Function to retrieve the integrated dry Atmospheric Phase Delay (NonDispersive part) along the atmospheric path corresponding to the 1st guess water column.

Arguments


Inputs
nc	Channel number (0-based; defaults to reference channel)
	allowed:	int
	Default:	-1
spwid	Int standing for spectral window id (0-based). The value must be >= 0.
	allowed:	int
	Default:	0

Returns
Quantity

Example

w = at.getUserWH2O()
numSpw = at.getNumSpectralWindows()
for spwid in range(numSpw):
        numCh = at.getNumChan(spwid)
        print "Spectral window ", spwid, " has ", numCh, " frequency channels"
        for n in range(numCh):
                freq = at.getChanFreq(n, spwid)
                print "Total Dispersive Dry Phase Delay at ", freq[’value’][0], freq[’unit’], " for 1.0 air mass: ",\
                      (at.getDispersiveDryPhaseDelay(n,spwid)[’value’][0])/(w[’value’][0])," degrees per mm of water vapor (",\
                      ((100*at.getDispersiveDryPhaseDelay(n,spwid)[’value’][0])/(w[’value’][0]))/(at.getNonDispersiveDryPhaseDelay(n,spwid)[’value’][0]/w[’value’][0]),\
                      "% of the Non-dispersive one )"

__________________________________________________________________

[next] [prev] [prev-tail] [front] [up]

More information about CASA may be found at the CASA web page

This code is available under the terms of the GNU General Public Lincense