Table 1: PWVMCAL: Radiometric calibration method
PWVMCAL: Radiometric calibration method

Name

Format

Units

Measure

Comments

Columns

Key

ANTENNA_ID

Int

Antenna id.

SPECTRAL_WINDOW_ID

Int

Spectral window id

TIME

Double

s

EPOCH

Midpoint of time for which this set of parameters is accurate

INTERVAL

Double

s

Interval

Data

OPERATION_MODE

String

WVR operation mode

NUM_POLY

Int

Series order

FREQ_ORIGIN

Double

Hz

Origin for the polynomial

PATH_COEFF

Double
(NUM_POLY+1)

Conversion formula coefficients

CALIBRATION_MODE

String

WVR calibration mode

(PWREF_MODEL) 

Float

m

Reference model to calibrate the PWVM

Flags

Notes: This table contains time-variable calibration methods for the radiometric corrections. The frequency limits for polynomial expansion of coefficient must be compatible with the SPECTRAL_WINDOW_IDof the radiometer.
ANTENNA_ID
SPECTRAL_WINDOW_ID
spectral window identifier for the radiometer.
TIME
INTERVAL
OPERATION_MODE
Operation mode (TBD) eg 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) eg a priori coefficients or empirical correction added
PWREF_MODEL
Calibration parameter which describes the reference model for the calibration of a radiometer