GOM_PR1_AX_GADS_general_v1

binary record "GOM_PR1_AX_GADS_general_v1"size: 346
idfield namedefinition
0cos_rays_flag
binary uint8size: 1
Cosmic rays processing activation switch
1mod_corr_switch
binary uint8size: 1
Modulation correction switch
2dark_charge_flag
binary uint8size: 1
Dark charge correction processing activation switch. 0 = no correction; 1 = use DC maps; 2 = use first measurements; 3 = use DC maps from ADF
3inter_stray_flag
binary uint8size: 1
Internal straylight correction activation switch. 0 = correction; 1 = no correction
4earth_stray_flag
binary uint8size: 1
External earth straylight correction activation switch. 0 = correction; 1 = no correction
5sun_stray_flag
binary uint8size: 1
External sun straylight correction activation switch. 0 = correction; 1 = no correction
6cen_back_flag
binary uint8size: 1
Central background estimation mode
7satu_flag
binary uint8size: 1
SATU data use activation switch
8vign_flag
binary uint8size: 1
Vignetting activation switch. 0 = do not perform vignetting; 1 = perform vignetting
9flat_flag
binary uint8size: 1
Flat-field correction mode. 0 = no flat-field correction; 1 = flat-field correction active; 2 = use FP data.
10flat_field_switch
binary array[4]size: 4
Flat field correction switches
binary uint8size: 1
11interp_mode_flag
binary uint8size: 1
Interpolation mode for spectra resampling. 0 = cubic spline; 1 = linear interpolation
12grid_sel_flag
binary uint8size: 1
Spectral grid selection for transmission computation. 0 = acquisition spectral grid; 1 = nominal spectral grid
13cov_flag
binary uint8size: 1
Covariance computation mode
14no_lin_correction
binary uint8size: 1
Non-linearity correction activation switch
15reflect_activation_sw
binary uint8size: 1
Reflectivity correction activation switch
16spare_1
binary bytessize: 2
Spare

hidden: true
17earth_mod
binary uint8size: 1
Identifier of Earth model
18flat_earth
binary floatsize: 4
Flattening of the Earth
19earth_rad
binary floatsize: 4
Earth equatorial radius

unit: "m"
20atm_thick
binary floatsize: 4
Atmosphere thickness

unit: "m"
21earth_ecc
binary floatsize: 4
Earth orbit eccentricity
22sun_const
binary floatsize: 4
Gravitational constant for the sun

unit: "m3/s2"
23orbit_angle
binary floatsize: 4
Angle between the vernal axis and the Earth orbit perihelion direction

unit: "degrees"
24semi_axis
binary floatsize: 4
Earth orbit semi-major axis

unit: "m"
25light_c
binary uint32 (double)size: 4
Speed of light

unit: "m/s"

converted unit: "m/s" ()
26param_occ_type
binary array[8]size: 32
Parameters for the determination of the occultation type (full dark / bright / twilight / straylight). Only the 5 first values are useful: 1. TGP altitude threshold for bright limb condition (km) - nominal is 50km; 2. TGP sun zenith angle threshold for bright limb condition (deg) - nominal is 97 deg; 3. TGP altitude threshold for twilight condition (km) - nominal is 100km; 4. TGP sun zenith angle threshold for twilight condition (deg) - nominal is 110 deg; 5. Satellite sun zenith angle threshold for straylight condition (deg) - nominal is 120 deg.
binary floatsize: 4
27spare_2
binary bytessize: 8
Spare

hidden: true
28ray_param
binary array[10]size: 40
Ray tracing parameters
binary floatsize: 4
29ray_time_shift
binary uint32 (double)size: 4
Time shift for ray tracing computation

unit: "1e-3 s"

converted unit: "s" (multiply by 1/1000)
30min_wl
binary uint32 (double)size: 4
Minimum wavelength value for ray-tracing

unit: "1e-3 nm"

converted unit: "nm" (multiply by 1/1000)
31max_wl
binary uint32 (double)size: 4
Maximum wavelength value for ray-tracing

unit: "1e-3 nm"

converted unit: "nm" (multiply by 1/1000)
32ref_wl
binary uint32 (double)size: 4
Reference wavelength for the ray tracing

unit: "1e-3 nm"

converted unit: "nm" (multiply by 1/1000)
33spare_3
binary bytessize: 8
Spare

hidden: true
34spec_sat
binary array[4, 4]size: 32
Spectrometer sample saturation level. One amplitude level is specified for each gain of each spectrometer. Order: SPA1 gains 0,1,2,3 followed by SPA2 gains 0,1,2,3 and then SPB1 and SPB2
binary uint16size: 2
unit: "ADU"
35fp_sat
binary array[2]size: 4
Photometer data saturation level
binary uint16size: 2
unit: "ADU"
36half_meas
binary uint8size: 1
Half-number of measurements for CR detection
37half_col
binary uint8size: 1
Half-number of CCD columns for CR detection
38cr_thresh_rel
binary array[4, 4]size: 16
Threshold for relative variation of the signal for cosmic rays detection
binary uint8size: 1
unit: "%"
39cr_thresh_abs
binary array[4, 4]size: 32
Threshold for absolute variation of the signal for cosmic rays detection
binary uint16size: 2
unit: "ADU"
40cr_min
binary array[4, 4]size: 32
Threshold for cosmic rays detection activation. Minimum sample value for which the cosmic rays detection processing is applied.
binary uint16size: 2
unit: "ADU"
41f_dark
binary uint8size: 1
Number of frames for dark charge estimation
42thr_back_dl
binary uint32size: 4
Threshold for background correction (dark limb)

unit: "e"
43thr_back_bl
binary uint32size: 4
Threshold for background correction (bright limb)

unit: "e"
44delta_h
binary uint32size: 4
Altitude range used in the estimated central background computation (general method)

unit: "m"
45poly_back_order
binary uint8size: 1
Order of the polynomial used in the estimated central background computation (general method)
46flat_index
binary uint16size: 2
Photometer index for the scintillation correction in the flat-field correction processing
47spare_4
binary bytessize: 8
Spare

hidden: true
48num_ref
binary uint16size: 2
Number of measurements to be used for the reference star spectrum computation
49max_spectra
binary uint16size: 2
Maximum number of star spectra to be checked for the computation of the reference star spectrum
50min_spectra
binary uint16size: 2
Minimum number of star spectra used to compute the reference star spectrum before a flag is raised
51thres_ref_star_spec
binary array[4]size: 8
Threshold for the validity of the reference star spectrum
binary uint16size: 2
52num_pix_flagged
binary array[4]size: 4
Number of pixels flagged if the reference star spectrum is below the validity threshold
binary uint8size: 1
53thr_error_meas
binary uint32 (double)size: 4
Threshold for MPH error indicator computation

unit: "1e-2 %"

converted unit: "%" (multiply by 1/100)
54min_alt_start_spectrum
binary array[4]size: 16
Minimum altitudes for the computation of the reference start spectrum
binary uint32size: 4
unit: "m"
55spare_5
binary bytessize: 8
Spare

hidden: true