By default, three output NDFs are created holding percentage polarisation, polarisation angle and total intensity. However, NDFs holding other quantities, such as the Stokes parameters, can also be produced by overriding the default null values associated with the corresponding parameters. The creation of any output NDF can be suppressed by supplying a null value for the corresponding parameter.
There is an option to correct the calculated values of percentage polarisation and polarised intensity to take account of the statistical bias introduced by the asymmetric distribution of percentage polarisation (see Parameter DEBIAS). This correction subtracts the variance of the percentage polarisation from the squared percentage polarisation, and uses the square root of this as the corrected percentage polarisation. The corresponding polarised intensity is then found by multiplying the corrected percentage polarisation by the total intensity. Returned variance values take no account of this correction.
|I||"Total Intensity"||UNITS of IN1|
|IA||"Total Intensity"||UNITS of IN1|
|IB||"Total Intensity"||UNITS of IN1|
|IP||"Polarised Intensity"||UNITS of IN1|
KAPPA --- Kernel Application Package