Off-nadir Angles

The off-nadir angles are computed at Level-2 processing.

Square of the WF-derived off-nadir angle (Ku band) is issued from the ocean retracking in LRM/PLRM modes and from the ocean/coastal retracking in SAR mode. It accounts for modelled instrumental errors correction and system bias.
Square of the WF-derived off-nadir angle validity flag (Ku band)
Square of the WF-derived off-nadir angle (Ku band) validity flags
RMS of the square of the WF-derived off-nadir angle (Ku band)
Number of valid points for the square of the WF-derived off-nadir angle (Ku band)
Modelled instrumental correction on the square of the WF-derived off-nadir angle (Ku band)
PF-derived off-nadir pitch angle
PF-derived off nadir roll angle
PF-derived off-nadir yaw angle

*Off-nadir angles*
PARAMETER	Square of the Waveform Derived Off-Nadir Angle (Ku band)
NETCDF NAME	corrected_off_nadir_angle_wf_ocean[x1]_[x2] [x1]: 1 Hz or 20 Hz data rates [x2]: Ku-band or C-band
DESCRIPTION	The PLA_MAN_GCM_01 algorithm computes the altimeter off-nadir angle from the platform data file.
UNITS	Degrees
DATA SET AVAILABILITY	Reduced: None Standard: 1 Hz Ku band only Enhanced: 1 Hz only
OPERATING MODE AVAILABILITY	LRM and SAR
DATA ORIGIN	1 Hz Ku/C-bands: PLA_MAN_GCM_01 algorithm 20 Hz Ku-band: None 20 Hz C-band: None
ADDITIONAL INFORMATION
PARAMETERS RELATED	Validity flag: val_alt_off_nadir_angle_wf_ocean_[x1]_[x2] RMS: off_nadir_angle_rms_[x1]_[x2] Modelled instrumental correction:mod_instr_cor_off_nadir_angle_[x1]_[x2]
PARAMETER DETAILED DESCRIPTION	ESA's Global Land and Ocean Mission for GMES Operational Services

Key Resources