4.1.1.0 atmosphere.getNonDispersiveDryPathLength

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atmosphere.getNonDispersiveDryPathLength - Function

4.1.1 get the integrated dry Atmospheric NonDispersive Path

Description

Retrieve the integrated dry Atmospheric Path length (NonDispersive part) along the atmospheric path corresponding to the 1st guess water column for channel nc in spectral window spwid.

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.getGroundWH2O()
nb = 1
fC = qa.quantity([850.0], ’GHz’)
fW = qa.quantity([0.5], ’GHz’)
nfR = qa.quantity([0.5], ’GHz’)
at.initSpectralWindow(nb, fC, fW, fR)
print "Total Dispersive Delay at ", fC[’value’][0], fC[’unit’], " for 1.0 air mass: ",\
      at.getDispersiveDryPathLength()[’value’][0] /  w[’value’][0], " meters per mm of water vapor"
print "(",100*(at.getDispersiveDryPathLength()[’value’][0] /  w[’value’][0])/(at.getNonDispersiveDryPathLength()[’value’][0] / w[’value’][0]),\
      "% of the Non-dispersive one )"

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