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vpmanager.setpbinvpoly - Function

2.3.2 Make a vp/pb as an inverse polynomial


Description

The inverse polynomial describes the inverse of the VP or PB as a polynomial of even powers:

          ∑
1∕VP (x) =   coeffi *x2i.
           i
(2.14)

Arguments





Inputs

telescope

Which telescope in the MS will use this vp/pb?

allowed:

string

Default:

VLA

othertelescope

If telescope==”OTHER”, specify name here

allowed:

string

Default:

dopb

Should we apply the vp/pb to this telescope’s data?

allowed:

bool

Default:

true

coeff

Coefficients of even powered terms

allowed:

doubleArray

Default:

-1

maxrad

Maximum radial extent of the vp/pb (scales with 1/freq)

allowed:

any

Default:

variant 0.8deg

reffreq

Frequency at which maxrad is specified

allowed:

any

Default:

variant 1.0GHz

isthispb

Do these parameters describe a PB or a VP?

allowed:

string

Default:

PB

squintdir

Offset (Measure) of RR beam from pointing center, azel frame (scales with 1/freq)

allowed:

any

Default:

variant

squintreffreq

Frequency at which the squint is specified

allowed:

any

Default:

variant 1.0

dosquint

Enable the natural beam squint found in the common vp model

allowed:

bool

Default:

false

paincrement

Increment in Parallactic Angle for asymmetric (ie, squinted) vp application

allowed:

any

Default:

variant 720deg

usesymmetricbeam

Not currently used

allowed:

bool

Default:

false

Returns
record
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