GEDI L2A Product Data Dictionary

Dimension Variable Description
MT Number of shots


Group: /
short_name (Attribute) GEDI_L2A ${DESCRIPTION}
Group: /METADATA/DatasetIdentification
abstract (Attribute) The GEDI L2A standard data product contains precise latitude, longitude, elevation, canopy height and surface energy metrics extracted from return waveforms for the various reflecting surfaces located within each laser footprint. ${DESCRIPTION}
characterSet (Attribute) utf8 ${DESCRIPTION}
creationDate (Attribute) File creation date
credit (Attribute) The software that generates the L2A product was designed and implemented within the GEDI Science Data Processing System at the NASA Goddard Space Flight Center in Greenbelt, Maryland in collaboration with the LVIS (Land, Vegetation, and Ice Sensor) Team and the University of Maryland. ${DESCRIPTION}
fileName (Attribute) Original file name
language (Attribute) eng ${DESCRIPTION}
originatorOrganizationName (Attribute) GSFC GEDI-SDPS > GEDI Science Data Processing System and University of Maryland ${DESCRIPTION}
PGEVersion (Attribute) Product generating executive SDPS release ID
purpose (Attribute) The purpose of the L2A dataset is to provide waveform interpretation and extracted products from each GEDI waveform. This includes ground elevation, canopy top height, relative return energy metrics (describing canopy vertical structure, for example), and many other interpreted products from the return waveforms. ${DESCRIPTION}
shortName (Attribute) GEDI_L2A ${DESCRIPTION}
spatialRepresentationType (Attribute) along-track ${DESCRIPTION}
status (Attribute) onGoing ${DESCRIPTION}
topicCategory (Attribute) geoscientificInformation ${DESCRIPTION}
uuid (Attribute) Universally unique identifier (UUID) for this file
VersionID (Attribute) SDPS DAAC release ID
Group: /BEAMXXXX
Label Datatype
(Dimensions)
long_name units
source
description
beam UINT16
(MT)
beam
L1B
Beam identifier 0, 12
channel UINT8
(MT)
channel
L1B
Channel identifier 0, 6
degrade_flag UINT8
(MT)
degrade_flag
L1B
Flag indicating degraded state of pointing and/or positioning information 0, 1
delta_time FLOAT64
(MT)
delta_time s
L1B
Time delta since Jan 1 00:00 2018.
digital_elevation_model FLOAT32
(MT)
digital_elevation_model m
L1B
TanDEM-X elevation at GEDI footprint location
elev_highestreturn FLOAT32
(MT)
elev_highestreturn m
elevation of highest detected return relative to reference ellipsoid -1000, 25000 delta_time lat_highestreturn lon_highestreturn
elev_lowestmode FLOAT32
(MT)
elev_lowestmode m
elevation of center of lowest mode relative to reference ellipsoid -1000, 25000 delta_time lat_lowestmode lon_lowestmode
elevation_bias_flag UINT8
(MT)
elevation_bias_flag -
Elevations potentially affected by 4bin (~60cm) ranging error 0, 1 delta_time lat_lowestmode lon_lowestmode
elevation_bin0_error FLOAT32
(MT)
elevation_bin0_error m
L1B
Error in elevation of bin 0 -1000, 25000 delta_time lat_lowestmode lon_lowestmode
energy_total FLOAT32
(MT)
energy_total counts
Integrated counts in the return waveform relative to the mean noise level -5000, 5000000 delta_time lat_lowestmode lon_lowestmode
lat_highestreturn FLOAT64
(MT)
lat_highestreturn degrees
Latitude of highest detected return -55, 55 delta_time lon_highestreturn
lat_lowestmode FLOAT64
(MT)
lat_lowestmode degrees
Latitude of center of lowest mode -55, 55 delta_time lon_lowestmode
latitude_bin0_error FLOAT32
(MT)
latitude_bin0_error degrees
L1B
Error in latitude of bin 0 delta_timelongitude_bin0 latitude_bin0 longitude_bin0_error
lon_highestreturn FLOAT64
(MT)
lon_highestreturn degrees
Longitude of highest detected return -180, 180 delta_time lat_highestreturn
lon_lowestmode FLOAT64
(MT)
lon_lowestmode degrees
Longitude of center of lowest mode -180, 180 delta_time lat_lowestmode
longitude_bin0_error FLOAT32
(MT)
Error in longitude of bin 0 degrees
L1B
Error on longitude_bin0. delta_time latitude_bin0 longitude_bin0 latitude_bin0_error
master_frac FLOAT64
(MT)
master_frac s
L1B
Master time, fractional part. master_int+master_frac is equivalent to /BEAMXXXX/geolocation/delta_time and /BEAMXXXX/geophys_corr/delta_time.
master_int UINT32
(MT)
master_int s
L1B
Master time, integer part. Seconds since master_time_epoch. master_int+master_frac is equivalent to /BEAMXXXX/geolocation/delta_time and /BEAMXXXX/geophys_corr/delta_time.
mean_sea_surface FLOAT32
(MT)
mean_sea_surface m
L1B
Mean sea surface height above the WGS84 ellipsoid, includes the geoid. Interpolated at latitude_bin0 and longitude_bin0 from DTU15. delta_time lat_lowestmode lon_lowestmode
num_detectedmodes UINT8
(MT)
num_detectedmodes -
Number of detected modes in rxwaveform 0, rx_max_mode_count delta_time lat_lowestmode lon_lowestmode
quality_flag UINT8
(MT)
quality_flag -
Flag simpilfying selection of most useful data 0, 1 delta_time lat_lowestmode lon_lowestmode
rh FLOAT32
(MT,101)
rh m
Relative height metrics at 1 % interval -213, 213 delta_time lat_lowestmode lon_lowestmode
selected_algorithm UINT8
(MT)
selected_algorithm -
ID of algorithm selected as identifying the lowest non-noise mode 1, 6 delta_time lat_lowestmode lon_lowestmode
selected_mode UINT8
(MT)
selected_mode -
ID of mode selected as lowest non-noise mode 0, 20 delta_time lat_lowestmode lon_lowestmode
sensitivity FLOAT32
(MT)
sensitivity -
Maxmimum canopy cover that can be penetrated considering the SNR of the waveform 0, 1 delta_time lat_lowestmode lon_lowestmode
shot_number UINT64
(MT)
shot_number
L1B
Shot number delta_time lat_lowestmode lon_lowestmode
solar_azimuth FLOAT32
(MT)
solar_azimuth
L1B
Solar azimuth delta_time lat_lowestmode lon_lowestmode
solar_elevation FLOAT32
(MT)
solar_elevation
L1B
Solar elevation delta_time lat_lowestmode lon_lowestmode
surface_flag UINT8
(MT)
surface_flag -
Indicates elev_lowestmode is within 300m of DEM or MSS 0, 1 delta_time lat_lowestmode lon_lowestmode
Group: /BEAMXXXX/ancillary
Label Datatype
(Dimensions)
long_name units
source
description
l2a_alg_count UINT8
1
l2 alg count
Number of L2A algorithm runs present in file 0, 10
Group: /BEAMXXXX/geolocation
Label Datatype
(Dimensions)
long_name units
source
description
elev_highestreturn_aN FLOAT32
(MT)
elev_highestreturn_aN m
Elevation of the highest return detected using algorithm N, relative to reference ellipsoid -1000, 25000 ../delta_time lat_highestreturn_aN lon_highestreturn_aN
elev_lowestmode_aN FLOAT32
(MT)
elev_lowestmode_aN m
Elevation of the center of the lowest mode detected using algorithm N,relative to reference ellipsoid -1000, 25000 ../delta_time lat_lowestmode_aN lon_lowestmode_aN
elev_lowestreturn_aN FLOAT32
(MT)
elev_lowestreturn_aN m
Elevation of lowest return detected using algorithm N,relative to reference ellipsoid -1000, 25000 ../delta_time lat_lowestreturn_aN lon_lowestreturn_aN
elevation_1gfit FLOAT32
(MT)
elevation_gaussfit_aN m
Elevation corresponding to the center of a single gaussian fit to the waveform, relative to reference ellipsoid -1000, 25000 ../delta_time latitude_1gfit longitude_1gfit
elevs_allmodes_aN FLOAT32
(MT,rx_max_mode_count)
elevs_allmodes_aN m
Elevations of all modes detected using algorithm N, relative to reference ellipsoid -1000, 25000 ../delta_time lats_allmodes_aN lons_allmodes_aN
energy_lowestmode_aN FLOAT32
(MT)
energy_lowestmode_aN counts
Energy of lowest mode, detected using algorithm N, in the waveform above the mean noise level -5000, 5000000 ../delta_time lat_lowestmode_aN lon_lowestmode_aN
lat_highestreturn_aN FLOAT64
(MT)
lat_highestreturn_aN degrees
Latitude of the highest return detected using algorithm N -55, 55 ../delta_time lon_highestreturn_aN
lat_lowestmode_aN FLOAT64
(MT)
lat_lowestmode_aN degrees
Latitude of the center of the lowest mode detected using algorithm N -55, 55 ../delta_time lon_lowestmode_aN
lat_lowestreturn_aN FLOAT64
(MT)
lat_lowestreturn__aN degrees
Latitude of the lowest return detected using algorithm N -55, 55 ../delta_time lon_lowestreturn_aN
latitude_1gfit FLOAT64
(MT)
latitude_gaussfit_aN degrees
Latitude corresponding to the center of a single gaussian fit to the waveform -55, 55 ../delta_time longitude_1gfit_aN
lats_allmodes_aN FLOAT64
(MT,rx_max_mode_count)
lats_allmodes_aN degrees
Latitudes of all modes detected using algorithm N -55, 55 ../delta_time lons_allmodes_aN
lon_highestreturn_aN FLOAT64
(MT)
lon_highestreturn_aN degrees
Longitude of the highest return detected using algorithm N -180, 180 ../delta_time lat_highestreturn_aN
lon_lowestmode_aN FLOAT64
(MT)
lon_lowestmode_aN degrees
Longitude of the center of lowest mode detected using algorithm N -180, 180 ../delta_time lat_lowestmode_aN
lon_lowestreturn_aN FLOAT64
(MT)
lon_lowestreturn_aN degrees
Longitude of lowest return detected using algorithmN -180, 180 ../delta_time lat_lowestreturn_aN
longitude_1gfit FLOAT64
(MT)
longitude_gaussfit_aN degrees
Longitude corresponding to the center of a single gaussian fit to the waveform -180, 180 ../delta_time latitude_1gfit
lons_allmodes_aN FLOAT64
(MT,rx_max_mode_count)
lons_allmodes_aN degrees
Longitudes of all modes detected using algorithmN -180, 180 ../delta_time lats_allmodes_aN
num_detectedmodes_aN UINT8
(MT)
num_detectedmodes_aN -
Number of detected modes detected using algorithm N 0, rx_max_mode_count ../delta_time lat_lowestmode_aN lon_lowestmode_aN
quality_flag_aN UINT8
(MT)
quality_flag_aN -
Flag simpilfying selection of most useful data 0, 1 ../delta_time lat_lowestmode_aN lon_lowestmode_aN
rh_aN INT16
(MT,101)
rh_aN cm
Relative height metrics at 1 % intervals using algorithm N (in cm) -213, 213 ../delta_time lat_lowestmode_aN lon_lowestmode_aN
sensitivity_aN FLOAT32
(MT)
sensitivity_aN -
Maxmimum canopy cover, using algorithmN, that can be penetrated considering the SNR of the waveform 0, 1 ../delta_time lat_lowestmode_aN lon_lowestmode_aN
stale_return_flag UINT8
(MT)
stale_return_flag -
L1B
Flag from digitizer indicating the real-time pulse detection algorithm did not detect a return signal above its detection threshold within the entire 10 km search window. The pulse location of the previous shot was used to select the telemetered waveform. 0, 1 ../delta_time lat_lowestmode_aN lon_lowestmode_aN
Group: /BEAMXXXX/land_cover_data
Label Datatype
(Dimensions)
long_name units
source
description
landsat_treecover FLOAT64
(MT)
Landsat tree canopy cover percent
Derived from treecover2010_v3 geotiff tiles
Tree cover in the year 2010, defined as canopy closure for all vegetation taller than 5m in height (Hansen et al.). Encoded as a percentage per output grid cell. ../delta_time ../lat_lowestmode ../lon_lowestmode -9999.0
modis_nonvegetated FLOAT64
(MT)
MODIS non-vegetated percent
Derived from MODIS geotiff tiles
Percent non-vegetated from MODIS data. Interpolated at latitude_bin0 and longitude_bin0. doi:10.5067/MODIS/MOD44B.006 ../delta_time ../lat_lowestmode ../lon_lowestmode -9999.0
modis_nonvegetated_sd FLOAT64
(MT)
MODIS non-vegetated standard deviation percent
Derived from MODIS geotiff tiles
Percent non-vegetated standard deviation from MODIS data. Interpolated at latitude_bin0 and longitude_bin0. doi:10.5067/MODIS/MOD44B.006 ../delta_time ../lat_lowestmode ../lon_lowestmode -9999.0
modis_treecover FLOAT64
(MT)
MODIS tree cover percent
Derived from MODIS geotiff tiles
Percent tree cover from MODIS data. Interpolated at latitude_bin0 and longitude_bin0. doi:10.5067/MODIS/MOD44B.006 ../delta_time ../lat_lowestmode ../lon_lowestmode -9999.0
modis_treecover_sd FLOAT64
(MT)
MODIS tree cover standard deviation percent
Derived from MODIS geotiff tiles
Percent tree cover standard deviation from MODIS data. Interpolated at latitude_bin0 and longitude_bin0. doi:10.5067/MODIS/MOD44B.006 ../delta_time ../lat_lowestmode ../lon_lowestmode -9999.0
Group: /BEAMXXXX/rx_1gaussfit
wp-gaussian-fit_version (Attribute) Version number of the wp-gaussian-fit software used to create the L2A file
wp-gaussian-fit_githash (Attribute) Git commit hash of the wp-gaussian-fit software used to create the L2A file
Label Datatype
(Dimensions)
long_name units
source
description
rx_gamplitude FLOAT32
(MT)
rx_gampltiude counts
Amplitude of single gaussian fit to the rxwaveform 0, 4096 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_gamplitude_error FLOAT32
(MT)
rx_gamplitude_error counts
Error in ampltiude estimate for single gaussian fit to the rxwaveform 0, 4096 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_gbias FLOAT32
(MT)
rx_gbias counts
Bias estimated in fitting a single gaussian to the rxwaveform 0, 350 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_gbias_error FLOAT32
(MT)
rx_gbias_error counts
Error on rx_gbias parameter estimate 0, 350 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_gchisq FLOAT32
(MT)
rx_gchisq -
Chi-squared value of gaussian fit to the rxwaveform 0, 10000 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_gflag UINT8
(MT)
rx_gflag -
Gaussian fit status flag. 1=convergence in chi2 value, 2=convergence in parameter value, 3=convergence in chi2 and parameter values, 4=convergence in orthogonality, 5=maximum number of iterations reached, 6=ftol too small (no further improvement), 7=xtol too small (no further improvement), 8=gtol too small (no further improvement). 0, 9 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_giters UINT16
(MT)
rx_giters -
Number of iterations to converge Gaussian fit to rxwaveform. 1, 100 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_gloc FLOAT32
(MT)
rx_gloc ns
Location (mean) of the Gaussian fit to the rxwaveform. 0, 1420 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_gloc_error FLOAT32
(MT)
rx_gloc_error ns
Error on rx_gloc parameter estimate 0, 1420 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_gwidth FLOAT32
(MT)
rx_gwidth ns
Width (1 sigma) of the gaussian fit to the rxwaveform 0, 1420 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_gwidth_error FLOAT32
(MT)
rx_gwidth_error ns
Error on rx_gwidth parameter estimate 0, 300 ../delta_time ../lat_lowestmode ../lon_lowestmode
Group: /BEAMXXXX/rx_1gaussfit/ancillary
Label Datatype
(Dimensions)
long_name units
source
description
mpfit_max_func_evals INT64
1
-
cfg
Maximum number of function evalutions allowed for fitting the Gaussian/extended Gaussian to the rxwaveform. 0, 100
mpfit_maxiters INT64
1
-
cfg
Maximum number of iterations allowed for fitting the Gaussian/extended Gaussian to the rxwaveform 0, 100
mpfit_tolerance FLOAT64
1
-
cfg
Convergence tolerance when fitting the Gaussian/extended Gaussian to the rxwaveform. 0, 1
rx_constraint_gamplitude_lower FLOAT64
1
counts
cfg
Lower allowable limit for the rx Gaussian fit amplitude 0, 4096
rx_constraint_gamplitude_upper FLOAT64
1
counts
cfg
Upper allowable limit for the rx Gaussian fit amplitude 0, 4096
rx_constraint_gloc_lower FLOAT64
1
ns
cfg
Lower allowable limit for the rx Gaussian fit location 0, 1420
rx_constraint_gloc_upper FLOAT64
1
ns
cfg
Upper allowable limit for the rx Gaussian fit location 0, 1420
rx_constraint_gwidth_lower FLOAT64
1
ns
cfg
Lower allowable limit for the rx Gaussian fit width. 0, 1000
rx_constraint_gwidth_upper FLOAT64
1
ns
cfg
Upper allowable limit for the rx Gaussian fit width. 0, 1000
rx_estimate_bias INT32
1
-
cfg
If set to 1, a bias was estimated as part of the Gaussian fit. Set to 0 otherwise. 0, 1
rx_mean_noise_level FLOAT64
1
counts
cfg
If amplitude is less than this value, no gaussian fitting is performed to the rxwaveform. 0, 350
rx_smoothwidth FLOAT64
1
ns
cfg
Smoothing width to apply to waveforms before Gaussian fitting. 0, 50
Group: /BEAMXXXX/rx_assess
wp-l2-assess_version (Attribute) Version number of the wp-l2-assess software used to create the L2A file
wp-l2-assess_githash (Attribute) Git commit hash of the wp-l2-assess software used to create the L2A file
Label Datatype
(Dimensions)
long_name units
source
description
mean FLOAT32
(MT)
meannoise counts
Mean noise estimate used in rx waveform interpretation algorithm 0, 4096 ../delta_time ../lat_lowestmode ../lon_lowestmode
mean_64kadjusted FLOAT32
(MT)
mean_64kadjusted counts
Average amplitude within 10km search window with energy from rxwaveform removed 0, 1000000 ../delta_time ../lat_lowestmode ../lon_lowestmode
ocean_calibration_shot_flag UINT8
(MT)
ocean_calibration_shot_flag -
Flag indicating return suitablefor use in sensor parameter estimation? 0, 1 ../delta_time ../lat_lowestmode ../lon_lowestmode
quality_flag UINT8
(MT)
Quality flag -
Flag indicating likely invalid waveform (1=valid, 0=invalid) 0, 1 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_assess_flag UINT16
(MT)
rx_assess_flag -
Flags indicating various error conditions possible in rxwaveform 0, 1 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_clipbin0 UINT16
(MT)
rx_clipbin0 bins
location of first waveform sample exceeding clip amplitude 0, 1420 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_clipbin_count UINT16
(MT)
rx_clipbincount bins
number of consecutive waveform samples affected by clipping 0, 1420 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_energy FLOAT32
(MT)
rx_energy counts
total energy of rxwaveform, mean noise removed -1000, 1000000 ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_maxamp FLOAT32
(MT)
rx_maxamp counts
maximum amplitude of rxwaveform relative to mean noise level ../delta_time ../lat_lowestmode ../lon_lowestmode
rx_maxpeakloc UINT16
(MT)
rx_maxpeakloc counts
Waveform sample where maximum amplitude of waveform occurs 1, 1420 ../delta_time ../lat_lowestmode ../lon_lowestmode
sd_corrected FLOAT32
(MT)
sd_corrected counts
noise standard deviation, corrected for odd/even digitizer bin errors based on pre-launch calibrations 0, 20 ../delta_time ../lat_lowestmode ../lon_lowestmode
shot_number UINT64
(MT)
shot_number
L1B
Shot number ../delta_time ../lat_lowestmode ../lon_lowestmode
Group: /BEAMXXXX/rx_assess/ancillary
Label Datatype
(Dimensions)
long_name units
source
description
rx_ampbounds_ll FLOAT64
1
rx_ampbounds_ll counts
cfg
Lower limit used for pulse amplitude flag 0, 4096
rx_ampbounds_ul FLOAT64
1
rx_ampbounds_ul counts
cfg
Upper limit used for pulse amplitude flag 0, 4096
rx_clipamp FLOAT64
1
rx_clipamp counts
cfg
Ampltiude above which clipping may occur 0, 4096
rx_pulsethresh FLOAT64
1
rx_pulsethreshold counts
cfg
Amplitude used to flag low amplitude return waveforms 0, 4096
rx_ringthresh FLOAT64
1
rx_ringthresh counts
cfg
Multipler on noise stddev to detect presence of ringing below the mean in the pulse 0, 4096
smoothing_width_locs FLOAT64
1
smoothing_width_locs ns
cfg
Used in debugging only 0, 1420
Group: /BEAMXXXX/rx_processing_aN
wp-l2-rxwave_version (Attribute) Version number of the wp-l2-rxwave software used to create the L2A file
wp-l2-rxwave_githash (Attribute) Git commit hash of the wp-l2-rxwave software used to create the L2A file
Label Datatype
(Dimensions)
long_name units
source
description
back_threshold FLOAT32
(MT)
back_threshold counts
threshold used to detect lowest elevation return energy 0, 4096 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
botloc FLOAT32
(MT)
botloc counts
waveform sample location of lowest detected return energy relative to bin0 of waveform 0, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
botloc_amp FLOAT32
(MT)
botloc_amp counts
amplitude at lowest detected energy return 0, 4096 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
energy_sm FLOAT32
(MT)
energy_sm counts
total energy of smoothed waveform -1000, 100000 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
front_threshold FLOAT32
(MT)
front_threshold counts
threshold used to detect highest elevation return energy 0, 4096 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
lastmodeenergy FLOAT32
(MT)
lastmodeenergy counts
energy in lowest detected mode -1000, 100000 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
mean FLOAT32
(MT)
mean counts
mean noise level used in algorithm 0, 4096 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
mean_sm FLOAT32
(MT)
mean_sm counts
mean noise level after smoothing 0, 4096 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
min_detection_energy FLOAT32
(MT)
min_detection_energy counts
integrated area of the computed minimally-detectable gaussian -1000, 100000 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
min_detection_threshold FLOAT32
(MT)
min_detection_threshold counts
detection threshold used to compute the minimally detected gaussian 0, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
peak FLOAT32
(MT)
peak counts
peak amplitude of raw waveform -100, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
pk_sm FLOAT32
(MT)
pk_sm counts
peak ampltiude of smoothed waveform -100, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
rx_algrunflag UINT8
(MT)
rx_algrunflag -
Flag indicating signal was detected and algorithm ran successfully 0, 1 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
rx_cumulative FLOAT32
(MT,101)
rx_cumulative ns
Waveform bin numbers of integer percents of integrated energy from cumulative waveform (botloc (0%) to toploc (100%)) 0, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
rx_iwaveamps FLOAT32
(MT,rx_max_mode_count)
rx_iwaveamps counts
Fraction of integrated waveform at location of each detected mode 0, 1 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
rx_modeamps FLOAT32
(MT,rx_max_mode_count)
rx_modeamps counts
Amplitudes of each detected mode within waveform -100, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
rx_modeenergytobotloc FLOAT32
(MT,rx_max_mode_count)
rx_modeenergytobotloc counts
Total energy from the center of each detected waveform mode to botloc -1000, 1000000 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
rx_modelocalenergy FLOAT32
(MT,rx_max_mode_count)
rx_modelocalenergy counts
Energy between +- 8 samples of each detected mode, mean noise level removed -1000, 1000000 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
rx_modelocalenergyabovemean FLOAT32
(MT,rx_max_mode_count)
rx_modelocalenergyabovemean counts
Energy between +- 8 samples of each detected mode -1000, 1000000 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
rx_modelocalslope FLOAT32
(MT,rx_max_mode_count)
rx_modelocalslope counts
Signal trend within +- 8 samples of each detected mode -100, 100 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
rx_modelocs FLOAT32
(MT,rx_max_mode_count)
rx_modelocs ns
Sample numbers of each detected mode (relative to bin 0 of waveform) 0, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
rx_modewidths FLOAT32
(MT,rx_max_mode_count)
rx_modewidths ns
1 sigma width estimates of each detected mode in waveform 0, 700 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
rx_nummodes UINT8
(MT)
rx_nummodes ns
Number of modes detected in waveform 0, rx_max_mode_count ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
sd_sm FLOAT32
(MT)
sd_sm counts
Noise standard deviation of the smoothed waveform 0, 100 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
search_end FLOAT32
(MT)
search_end ns
Sample number indicating end of signal search 0, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
search_start FLOAT32
(MT)
search_start ns
Sample number indicating start of signal search 0, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
selected_mode UINT8
(MT)
selected_mode -
ID of mode selected as lowest non-noise mode 0, rx_max_mode_count ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
selected_mode_flag UINT8
(MT)
selected_mode_flag -
Flag indicating status of selected_mode 0, 4 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
shot_number UINT64
(MT)
shot_number
L1B
Shot number delta_time lat_lowestmode lon_lowestmode
smoothwidth FLOAT32
(MT)
smoothwidth ns
width of gaussian function used to smooth noise sections of waveforms 0, 20 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
smoothwidth_zcross FLOAT32
(MT)
smoothwidth_zcross ns
width of gaussian function used to smooth waveform between botloc and toploc 0, 20 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
stddev FLOAT32
(MT)
stddev countd
L1B
noise standdard deviation used in algorithm 0, 4096 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
toploc FLOAT32
(MT)
toploc counts
Sample number of highest detected return 0, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
toploc_miss UINT8
(MT)
toploc_miss -
Flag indicating algorithm didn't detect valid toploc value 0, 1 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
zcross FLOAT32
(MT)
zcross ns
Sample number of center of lowest mode above noise level 0, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
zcross0 FLOAT32
(MT)
zcross0 ns
location of center of highest mode above noise level relative to bin0 of waveform 0, 1420 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
zcross_amp FLOAT32
(MT)
zcross_amp counts
amplitude of smoothed waveform at lowest detected mode 0, 4096 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
zcross_localenergy FLOAT32
(MT)
zcross_localenergy counts
energy of last mode above local slope -100, 10000 ../delta_time ../geolocation/lat_lowestmode_aN ../geolocation/lon_lowestmode_aN
Group: /BEAMXXXX/rx_processing_aN/ancillary
Label Datatype
(Dimensions)
long_name units
source
description
amp_thresh FLOAT64
1
amp_thresh counts
cfg
Final ground return pulse selection parameter 0, 4096
ampval_limit2 FLOAT64
1
amval_limit2 counts
cfg
Final ground return pulse selection parameter 0, 4096
ampval_limit3 FLOAT64
1
ampval_limit3 counts
cfg
Final ground return pulse selection parameter 0, 4096
botlocdist_limit1 FLOAT64
1
botlocdist_limit1 ns
cfg
Final ground return pulse selection parameter 0, 50
botlocdist_limit2 FLOAT64
1
botlocdist_limit2 ns
cfg
Final ground return pulse selection parameter 0, 50
botlocdist_limit3 FLOAT64
1
botlocdist_limit3 ns
cfg
Final ground return pulse selection parameter
cumulative_energy_minimum FLOAT64
1
cumulative_energy_minimum counts
cfg
Final ground return pulse selection parameter 0, 1
cumulative_energy_thresh FLOAT64
1
cumulative_energy_thresh counts
cfg
Final ground return pulse selection parameter 0, 1
enable_select_mode INT32
1
enable_select_mode -
cfg
Final ground return pulse selection parameter 0, 1
energy_thresh FLOAT64
1
energy_thresh counts
cfg
Final ground return pulse selection parameter 0, 1000
preprocessor_threshold FLOAT64
1
preprocessor threshold -
cfg
Initial search threshold multiplier to detect signal start and end 0, 100
pulse_sep_thresh FLOAT64
1
pulse_sep_thresh ns
cfg
Final ground return pulse selection parameter 0, 100
rx_back_threshold FLOAT64
1
rx_back_threshold -
cfg
If use_fixed_threshold=0, this is the noise stddev multiplier used to detect the lowest elevation signal. If use_fixed_threshold is non_zero, use the value as the threshold 0, 100
rx_front_threshold FLOAT64
1
rx_front_threshold -
cfg
If use_fixed_threshold=0, this is the noise stddev multiplier used to detect the highest elevation signal. If use_fixed_threshold is non_zero, use the value as the threshold 0, 100
rx_max_mode_count INT64
1
rx_max_mode_count -
cfg
Maximum number of modes saved for each footprint 0, 40
rx_searchsize FLOAT64
1
rx_searchsize ns
cfg
In combination with preprocessor_threshold, used to define area of waveform to be searched by algorithm 0, 500
rx_sentinel_location FLOAT64
1
rx_sentinel_location ns
cfg
location of sentinel pulse used by sensitivity algorithm 0, 300
rx_smoothing_width_locs FLOAT64
1
rx_smoothing_width_locs ns
cfg
Width of guassian pulse convolved with waveform to reduce noise prior to toploc/botloc identification 0, 30
rx_smoothing_width_zcross FLOAT64
1
rx_smoothing_width_zcross ns
cfg
Width of guassian pulse convolved with waveform to reduce noise prior to pulse mode identification 0, 30
rx_subbin_resolution INT64
1
rx_subbin_res -
cfg
Factor of increased vertical resolution relative to native waveform resolution (~0.15 m). 0, 10
rx_use_fixed_thresholds INT32
1
rx_use_fixed_thresholds -
cfg
If =0, then use values in Front_Threshold and Back_Threshold as the noise stddev multipliers used to detect the highest and lowest elevation returns. If use_fixed_threshold is non_zero, use the value in Front_Threshold and Back_Threshold as the threshold value (not as a multiplier for stddev). 0, 1