instrument_pol

property Workspace.instrument_pol

Definition of the polarisation of an instrument.

The default for output is to give data for the selected Stokes elements (1:stokes_dim). This variable defines the polarisations that are actually measured, or are transmitted.

The polarisation states/components are coded as

0. Undefined.

1. I, total intensity.

2. Q, second Stokes component, Iv - Ih.

3. U, third Stokes component, I+45 - I-45.

4. V, forth Stokes component, Irc - Ilc

5. Iv, intensity of vertically polarised component.

6. Ih, intensity of horizontally polarised component.

7. I+45, intensity of +45 deg linearly polarised component.

8. I-45, intensity of -45 deg linearly polarised component.

9. Ilhc, intensity of left-hand circularly polarised component.

10. Irhc, intensity of right-hand circularly polarised component.

See the documentation for definition of the Stokes vector and the different components.

If the instrument measures, or transmits, vertical and horizontal components, this variable shall accordingly be set to [5,6].

Conversion to Planck-BT of components 2-4 requires that component 1 is kept, and must be included as first element.

The shift from the Stokes vector can be made at any stage when of the sensor response set-up. The responses used must of course be adopted correspondingly. Or reversed, if the antenna response is defined for Iv or Ih it could be useful to shift polarisation as first sensor operation.

Usage: Set by the user.

Workspace methods that require instrument_pol

iy_transmitterMultiplePol() iy_transmitterSinglePol() sensor_responsePolarisation()

Generic workspace methods that can generate or use instrument_pol

See ArrayOfIndex and/or Any

type:

WorkspaceVariable - holds type ArrayOfIndex