IPOFFSET

Modify the level of Instrumental Polarisation correction

Description:

This parameter is only used when processing POL2 Q or U time-streams as created by SMURF:CALCQU, and if a value is supplied for ADAM parameter IPREF. It specifies an offset to be added onto the expected level of IP predicted by the selected IP model. The value should be supplied as a percentage. Thus, setting ipoffset to (say) 0.3 will cause the expected level of IP to be increased by 0.3% (typical IP levels are in the range 1-2%, and vary with elevation). Creating maps with different values of ipoffset provides a handle on how sensitive the map is to the details of the IP correction. The current IP model is roughly accurate to about +/- 0.3%. See also parameter "ipangoff" . [0.0]
Type:
float

SMURF Usage

MAKEMAP, CALCQU