WVMCAL Radiometric calibration method.

Name

Format

Units

Measure

Comments

Columns

Key

ANTENNA_ID

Int Antenna identifier

SPECTRAL_WINDOW_ID

Int Spectral window identifier

TIME

Double s EPOCH Mid-point period when calibration data have been observed

INTERVAL

Double s Time interval

Data

OPERATION_MODE

String WVR operation mode

NUM_POLY

Int Series order Npoly

FREQ_ORIGIN

Double Hz Origin for the polynomial

PATH_COEFF

Double( Npoly+1) Polynomial Coefficients

CALIBRATION_MODE

String WVR calibration mode

(WVREF_MODEL)

Float Reference model to calibrate the WVM

Notes: This table contains time-variable calibration methods for the radiometric corrections. Note that the frequency limits for polynomial expansion of coefficient must be compatible with the SPECTRAL_WINDOW_ID of the radiometer.
ANTENNA_ID
SPECTRAL_WINDOW_ID
Spectral window identifier for the radiometer.
TIME
Mid-point of the time interval over which the data in the row are valid. Require to use the same TIME Measure reference as in MAIN.
INTERVAL
Time interval
OPERATION_MODE
Operation mode (TBD) e.g. keep corrected and uncorrected, keep average correction to zero, ...
NUM_POLY
Series order of the polynomial expressions
FREQ_ORIGIN
Frequency origin for the polynomial expansion.
PATH_COEFF
Conversion formula coefficients of WVR to Pathlength
CALIBRATION_MODE
Calibration mode (TBD) e.g. a priori coefficients or empirical correction added
WVREF_MODEL
Calibration parameter which describes the reference model for the calibration of a radiometer.