CALPOSITION Antenna position calibration results

Name

Format

Units

Measure

Comments

Columns

Key

CAL_DATA_ID

Int Calibration data identifier

CAL_REDUCTION_ID

Int Calibration reduction identifier

ANTENNA_ID

Int Antenna identifier

Data

START_VALID_TIME

Double s EPOCH Start time of result validity period

END_VALID_TIME

Double s EPOCH End time of result validity period

POSITION_OFFSET

Double(3) m Position Offsets measured (XYZ)

POSITION_ERR

Double(3) m Position uncertainties (XYZ)

DELAY_RMS

Float s Delay residual

PHASERMS

Float rad RMS Phase Fluctuations

AXES_OFFSET

Double m Axes Offset

AXES_OFFSET_FIXED

Bool Axes Offset was fixed

AXES_OFFSET_ERR

Double m Axes Offset uncertainty

POSITION_METHOD

String Observing Method

REF_ANTENNA_ID

Int Reference Antenna Identifier

REF_CALDATA_ID

Int CAL_DATA_ID identifier qualifying REF_ANTENNA_ID

Notes: This table contains the result of a Pointing Model determination, using a set of individual pointing observations.
CAL_DATA_ID
Calibration data identifier
CAL_REDUCTION_ID
Calibration reduction identifier
ANTENNA_ID
Antenna identifier
START_VALID_TIME
Start time of result validity period
END_VALID_TIME
End time of result validity period
POSITION_OFFSET
The measured position offsets in the XYZ directions, in the coordinate system used to represent the antenna positions. The offsets are with respectto the nominal antenna positions in the ANTENNA table.
POSITION_ERR
Uncertainties in position offsets coordinates
DELAY_RMS
Delay residuals (when the positions are determined by fitting antenna delays).
PHASERMS
Phase residuals (when the positions are dtermined by fitting antenna phases to the data).
AXES_OFFSET
Offset between Azimuth and elevation axes.
AXES_OFFSET_FIXED
True when the offset between Azimuth and elevation axes was held fixed in the determination.
AXES_OFFSET_ERR
Uncertainty in the AxesOffset determination.
POSITION_METHOD
Method used (e.g. delays or phases).
REF_ANTENNA_ID
Identifier of the reference antenna in the ANTENNA table. (
REF_CALDATA_ID
) CAL_DATA_IDidentifier qualifying REF_ANTENNA_IDin case the calibration is based on more than one ExecBlock.