abhr1sdd
09/04/97 djm #1
06/22/98 dlf #2
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DATA DICTIONARY: AMSU/B 1B* HEADER RECORD
ANALOG_TELEM_ICE_TEMP_CONV_COEF - analog telemetry conversion
coefficients a0, a1, a2, a3 for ICE temperature.
ANALOG_TELEM_LO_CH16_TMP_COEF - analog telemetry conversion
coefficients a0, a1, a2, a3 for LO channel 16 temperature.
ANALOG_TELEM_LO_CH17_TMP_COEF - analog telemetry conversion
coefficients a0, a1, a2, a3 for LO channel 17 temperature
ANALOG_TELEM_LO_CH18-20_TMP_COEF - analog telemetry conversion
coefficients a0, a1, a2, a3 for LO channels 18-20 temperature
ANALOG_TELEM_MDE_TEMP_CONV_COEF - analog telemetry conversion
coefficients a0, a1, a2, a3 for MDE temperature
ANALOG_TELEM_PEU_TEMP_CONV_COEF - analog telemetry conversion
coefficients a0, a1, a2, a3 for PEU temperature
ANALOG_TELEM_PSU_TEMP_CONV_COEF - analog telemetry conversion
coefficients a0, a1, a2, a3 for PSU temperature
ANALOG_TELEM_REF_2ND_CONV_COEF - analog telemetry conversion
coefficients a0, a1, a2, a3 for reference +5v secondary voltage.
ANALOG_TELEM_SCAN_MTR_CURR_COEF - analog telemetry conversion
coefficients a0, a1, a2, a3 for scan motor temperature.
ANALOG_TELEM_SCAN_MTR_TEMP_COEF - analog telemetry conversion
coefficients a0, a1, a2, a3 for scan motor temperature.
ANALOG_TELEM_SECOND_CONV_COEF - array of 4 conversion coefficients
for 8 secondary voltages (+12v(A), -12v(A), +15v(A), -15v(A),
+8v(A), +5v(D), +5v(A), -5v(A) ).
ARGUMENT_OF_PERIGEE Argument of Perigee in degrees {note 3}
{note 3} These parameters are the satellite Osculating
(instantaneous) Keplerian orbital elements valid for the epoch
time provided (Inertial Reference Frame).
ATTITUDE_ERROR_CORRECTION Flag indicating whether the dynamic
attitude corrections have been performed. Currently (1995) the
earth location module (AELDS) does not perform these
corrections; the advisability of making these corrections is
under study. 0 --> no corrections; 1 --> the corrections were
performed.
CAL_TARGET_TEMP_COEF - array of 4 temperature conversion coefficients
for warm load PRT's.
(28 values: 4 coefficients for each of 7 PRT's)
CLOCK_UPDATE_RECORD The first record in this data set showing
the result of an update to the spacecraft's clock. A value of
zero indicates that no update occurred during the course of
this orbit.
COLD_SPACE_FIXED_BIAS_CORR - correction added to cold space
temperature to correct for radiation contamination from spacecraft.
(5 values: 1 coefficient for 5 channels)
COMPLETE_SCAN_COUNT The total number of calibrated and earth
located scans in this data set.
COMPONENT_ID Identifies the type of the file, in the case of a
HIRS 1b* data set it should contain the following character
string: HIRS_1BS. {note 2}
CPIDS_DOY - day of year of last CPIDS update.
CPIDS_YEAR - year of last CPIDS update.
CREATION_YEAR_DAY The 4-digit year and the day of year, in that
order, that this 1b* data set was created.
DATA_FRAME_COUNT - In the 1b format this is defined as
"Count of Data Frames Without Frame Sync Word Errors".
For AMSU this is currently defined as the number of minor
frames with valid AMSU sync words (i.e. hex F36A in first
16 bits of frame, 0's in next 6 bits). Since the AMSU data
occurs in the AMSU part of the frame, this flag does not
indicate TIP sync word errors.
DATA_GAPS_COUNT The number of separate data gaps of one or more
scans.
DATA_MODE From the PACS Status. 0 --> test data; 1 --> flight
data.
DATA_SOURCE The CDA station that received the satellite
transmission of this data. 1 --> Gilmore; 2 --> Wallops; 3 -->
SOCC <<?>>.
DATA_TYPE_CODE Indicates the data type of the data set.
Value is 11 for AMSU-B.
EARTH/SUN_DISTANCE_RATIO distance from Earth to the sun in
Astronomical units (mean distance is 1AU)
EARTH_LOC_ERROR_CODE If EARTH_LOC_ERROR_RECORD is nonzero, this
field contains the value from EARTH_LOCATION_PROBLEM_INDICATOR
as reported on the scan for which the error was reported.
EARTH_LOC_ERROR_RECORD If an earth location error is detected
during the period covered by this data set, the record number of
the first occurrence is given in this field. If no errors are
detected this field contains 0.
ECCENTRICITY Eccentricity {note 3}
{note 3} These parameters are the satellite Osculating
(instantaneous) Keplerian orbital elements valid for the epoch
time provided (Inertial Reference Frame).
END_DAY_OF_YEAR Day-of-year on which the last scan in this data
set occurred.
END_JULIAN_DAY Day count, from 00h, 1 Jan. 1950, of the last
scan in this data set. << Is 1 Jan 1950 day 0 or day 1?>>
<<This is a different definition for Julian day. We (the PDP)
have defined, and are using, Julian day as the number of days
since Jan. 1, 4713 BC.>>
END_MILLISECONDS_OF_DAY Time of day in milliseconds at which
the last scan of this data set began. <<Scan times on data
records will not mark the scan start, but rather the center of
dwell of the first FOV.>>
END_YEAR 4-digit year in which the last scan in this data set
occurred.
FET_AMP_TEMP_COEF - array of 4 temperature conversion coefficients
for FET amplifier for each channel.
(20 values: 4 coefficients for each of 5 channels)
FIRST_CHAN_16 - channel 16 relay flag in first
instrument status word. Value of 1 indicates relay status on.
FIRST_CHAN_17 - channel 17 relay flag in first
instrument status word. Value of 1 indicates relay status on.
FIRST_CHAN_18/19/20 - channels 18-20 relay flag in first
instrument status word. Value of 1 indicates relay status on.
FIRST_INSTRUMENT_STATUS A1 - The status of the instrument at the
beginning of the period covered by this data set. Status is
determined by A01 and A02 digital A data from the first scan.
FIRST_INVESTIGATION_MODE - investigation mode flag in first
instrument status word. Value of 1 indicates instrument in
investigation mode.
FIRST_MEMORY_CHECKS_STATUS - flag for memory check status in
first instrument status word.
Value of 1 indicates memory check status enabled.
FIRST_MODE_TRANSITION_FLAG - flag for mode transition in first
instrument status word.
Value of 1 indicates mode transition in progress; 0 implies
transition complete.
FIRST_MODULE_ID - module ID in first instrument status word.
For AMSU-B value should be 4.
FIRST_PARKED_IN_NADIR_VIEW_MODE - nadir mode flag in first
instrument status word. Value of 1 indicates instrument
in nadir mode.
FIRST_PARKED_IN_SPACE_VIEW_MODE - space view mode flag in first
instrument status word. Value of 1 indicates instrument parked
in space view mode.
FIRST_PARKED_IN_TARGET_VIEW_MODE - warm target view mode flag in first
instrument status word. Value of 1 indicates instrument parked
in warm target view mode.
FIRST_PIXEL_DATA_INVALID_FLAG - flag for pixel data invalid in
first instrument status word. Value of 1 indicates pixel data
invalid.
FIRST_POWER - flag for instrument power in first instrument status
word. Value of 1 indicates instrument power on.
FIRST_PROCESSOR_CHECK_FLAG - flag for processor check in
first instrument status word. Value of 1 indicates processor
check failed.
FIRST_RAM_CHECK_FLAG - flag for RAM check in
first instrument status word.
Value of 1 indicates RAM check failed.
FIRST_ROM_CHECK_FLAG - flag for ROM check in
first instrument status word.
Value of 1 indicates ROM check failed.
FIRST_SCAN_CONTROL_STATUS - flag for scan control status in
first instrument status word.
Value of 1 indicates scan control aborted; 0 indicates scan
control running.
FIRST_SCAN_NORMAL_MODE - full scan mode flag in first
instrument status word. Value of 1 indicates instrument in
full scan mode.
FIRST_SCAN_RECORD The record number in this data set of the
first scan where any instrument status bit differs from
bit in first instrument status word.
FIRST_SCAN_SYNC - flag for scan synchronization in
first instrument status word.
Value of 1 indicates scan sync error > 0.1 degree;
0 indicates error < 0.1 degree.
FIRST_SPACE_VIEW_LSB - lsb of space view position for scan
from first instrument status word.
Position values range from 0 to 3.
FIRST_SPACE_VIEW_MSB - msb of space view position for scan
from first instrument status word.
Position values range from 0 to 3.
FIRST_STEPPED_MODE - stepped mode flag in first
instrument status word. Value of 1 indicates instrument
in stepped mode.
FIRST_SURVIVAL_HEATER - survival heater flag in first
instrument status word. Value of 1 indicates survival
heater on.
HEX_AFFFFFFF The hex code AFFFFFF stroed in the natural order of
the target computer.
INCLINATION Inclination in degrees {note 3}
{note 3} These parameters are the satellite Osculating
(instantaneous) Keplerian orbital elements valid for the epoch
time provided (Inertial Reference Frame).
INSTRUMENT_ID Code identifying the AVHRR instrument that
produced the data for this data set. This information comes
from the spacecraft's CPIDS database.
INSTRUMENT_TEMP_SENSOR_ID- ID of instrument temperature
source: 0 = temperature is from mixer temperature of channels
18-20; 1 = temperature from mixer temp of channel 16.
LAST_SCAN_RECORD The record number in this data set of the last
scan.
LETTER_Q The letter Q encoded for the target computer. A 1b*
for the CEMSCS would have the letter Q encoded in EBCDIC;
for the PC it would be encoded in ASCII.
LOCAL_DATA_SET_NAME The name of this 1b* data set on the target
computer.
LO_CH16_TEMP_COEF - temperature conversion coefficients of
LO for channel 16.
(4 coefficients a0 to a3)
LO_CH17_TEMP_COEF - temperature conversion coefficients of
LO for channel 17.
(4 coefficients a0 to a3)
LO_CH18-20_TEMP_COEF - temperature conversion coefficients of
LO for channels 18-20.
(4 coefficients a0 to a3)
LO_MONITOR_CURR_CH16_COEF - conversion coefficients
LO monitor current for channel 16.
(4 coefficients a0 to a3)
LO_MONITOR_CURR_CH17_COEF - conversion coefficients
LO monitor current for channel 17.
(4 coefficients a0 to a3)
LO_MONITOR_CURR_CH18-20_COEF - conversion coefficients
LO monitor current for channels 18-20.
(4 coefficients a0 to a3)
MEAN_ANOMALY Mean Anomaly in degrees {note 3}
{note 3} These parameters are the satellite Osculating
(instantaneous) Keplerian orbital elements valid for the epoch
time provided (Inertial Reference Frame).
MISSING_SCAN_COUNT The difference between the total number of
scans expected during the period of this data set and
SCAN_COUNT.
MIXER_CH16_TEMP_COEF - conversion coefficients for
mixer temperature for channel 16.
(4 coefficients a0 to a3)
MIXER_CH17_TEMP_COEF - conversion coefficients for
mixer temperature for channel 17.
(4 coefficients a0 to a3)
MIXER_CH18-20_TEMP_COEF - conversion coefficients for
mixer temperature for channels 18-20.
(4 coefficients a0 to a3)
MORNING_AFTERNOON_INDICATOR Indicates whether the spacecraft
crosses the equater going north in the morning or in the
afternoon. 0 --> morning, 1 --> afternoon.
NADIR_TOLERANCE a value in kilometers that is used to determine
when earth location data at the satellite subpoint are outside
an acceptable range. The "bad earth location" flag tolerance is
exceeded. Generally, the range is set between 0.1 and 25.2
kilometers. Zero indicates no checking is done.
NON_LINEARITY_COEFF - Non-linearty coefficients U0, U1, U2 for
each of 5 channels.
(15 values: 3 coefficients for 5 channels)
NUMBER_OF_HEADER_RECS The total number of header records in the
1b* data set. NUMBER_OF_HEADER_RES + 1 gives the record number
of the first data record.
ORBIT_VECTOR_DAY_OF_YEAR Day count from the beginning of the
year for the reported orbital elements.
ORBIT_VECTOR_EPOCH_YEAR Four-digit year of the date for the
reported orbital elements.
ORBIT_VECTOR_UTC_TIME_OF_DAY Actual time for which the reported
orbit vector is valid in milliseconds.
ORIGINAL_DATA_SET_NAME The data set name used on the computer
that created this 1b*.
PI The number 3.141459 stored in the floating point format of
the target processor.
PITCH_ERROR_CONSTANT Pitch Euler angle reported in degrees
times 1000 based on instrument misalignment errors or observed
image errors. Positive pitch is down. {note 5}
POSITION_VECTOR_X_COMPONENT Position Vector X Component in
kilometers {note 4}
POSITION_VECTOR_Y_COMPONENT Position Vector Y Component in
kilometers {note 4}
POSITION_VECTOR_Z_COMPONENT Position Vector Z Component in
kilometers {note 4}
PROCESSING_BLOCK<<_ID>> The processing block ID. Seven digits
identifying the starting and ending orbits. The first 5 digits
give the starting orbit; the last two digits are the the last
two digits of the ending orbit. <<See POD, 7/91; pg. 2-4 for
exceptions.>>
PROCESSOR_ID The ID of the computer program that originally
created this 1b*.
PRT_BOARD_TEMP_COEF - PRT board temperature conversion coefficients
(4 coefficients a0 to a3)
PRT_BRIDGE_VOLTAGE_COEF - PRT bridge voltage conversion - ellipsoid model returned by AELDS earth
location processing.
coefficients
(4 coefficients a0 to a3)
PSEUDO_NOISE_FLAG Pseudo noise indicator from the PACS Status
Bit Field. 0 --> normal data; 1 --> P/N data.
REASONABLENESS_TEST_ACTIVE - flag from AELDS common block which
indicates whether AELDS software is performing reasonableness
check of earth location values.
REF_ELLIPSOID_MODEL_ID - ellipsoid model returned by AELDS earth
location processing.
RF_SHELF_REF_TEMP - 3 reference temperatures (minimum, nominal,
maximum) for either mixer (channel 18-20 mixer or channel 16 mixer)
from which device temperature is obtained. These reference
temperatures correspond to the 3 values of temperature-dependent
coefficients (e.g. non-linearity, warm target bias correction)
which are interpolated according to temperature.
(6 values: 3 coefficients for 2 mixers)
RIGHT_ASCENSION Right Ascension of the Ascending Node in
degrees {note 3}
{note 3} These parameters are the satellite Osculating
(instantaneous) Keplerian orbital elements valid for the epoch
time provided (Inertial Reference Frame).
ROLL_ERROR_CONSTANT Roll Euler angle reported in degrees times
1000 based on instrument misalignment errors or observed image
errors. Positive roll is to right. {note 5}
SCAN_COUNT The total number of scans represented in this data
set.
SECOND_CHAN_16 - channel 16 relay flag in second
instrument status word. Value of 1 indicates relay status on.
SECOND_CHAN_17 - channel 17 relay flag in second
instrument status word. Value of 1 indicates relay status on.
SECOND_CHAN_18/19/20 - channel 18-20 relay flag in second
instrument status word. Value of 1 indicates relay status on.
SECOND_INSTRUMENT_STATUS - The status of the instrument
at the first change in any status bit. Status is
determined by A01 and A02 digital A data.
SECOND_INVESTIGATION_MODE - investigation mode flag in second
instrument status word. Value of 1 indicates instrument in
investigation mode.
SECOND_MEMORY_CHECKS_STATUS - flag for memory check status in
second instrument status word.
Value of 1 indicates memory check status enabled
SECOND_MODE_TRANSITION_FLAG - flag for mode transition in
second instrument status word.
Value of 1 indicates mode transition in progress; 0 implies
transition complete.
SECOND_MODULE_ID - module ID in second instrument status word.
For AMSU-B value should be 4.
SECOND_PARKED_IN_NADIR_VIEW_MODE - nadir mode flag in second
instrument status word. Value of 1 indicates instrument
in nadir mode.
SECOND_PARKED_IN_SPACE_VIEW_MODE - space view mode flag in
second instrument status word. Value of 1 indicates instrument
in space view mode.
SECOND_PARKED_IN_TARGET_VIEW_MODE - warm target view mode flag
in second instrument status word.
Value of 1 indicates instrument parked
in warm target view mode.
SECOND_PIXEL_DATA_INVALID_FLAG - flag for pixel data invalid in
second instrument status word. Value of 1 indicates pixel data
invalid.
SECOND_POWER - flag for instrument power in second instrument status
word. Value of 1 indicates instrument power on
SECOND_PROCESSOR_CHECK_FLAG - flag for processor check in
second instrument status word. Value of 1 indicates processor
check failed.
SECOND_RAM_CHECK_FLAG - flag for RAM check in
second instrument status word.
Value of 1 indicates RAM check failed
SECOND_ROM_CHECK_FLAG - flag for RAM check in
first instrument status word.
Value of 1 indicates ROM check failed.
SECOND_SCAN_CONTROL_STATUS - flag for scan control status in
second instrument status word.
Value of 1 indicates scan control aborted; 0 indicates scan
control running.
SECOND_SCAN_NORMAL_MODE - full scan mode flag in second
instrument status word. Value of 1 indicates instrument in
full scan mode.
SECOND_SCAN_SYNC - flag for scan synchronization in
second instrument status word.
Value of 1 indicates scan sync error > 0.1 degree;
0 indicates error < 0.1 degree.
SECOND_SPACE_VIEW_LSB - lsb of space view position for scan
from second instrument status word.
Position values range from 0 to 3.
SECOND_SPACE_VIEW_MSB - msb of space view position for scan
from second instrument status word.
Position values range from 0 to 3.
SECOND_STEPPED_MODE - stepped mode flag in second
instrument status word. Value of 1 indicates instrument
in stepped mode.
SECOND_SURVIVAL_HEATER - survival heater flag in second
instrument status word. Value of 1 indicates survival
heater on.
SEMIMAJOR_AXIS Semi-major Axis in kilometers {note 3}
{note 3} These parameters are the satellite Osculating
(instantaneous) Keplerian orbital elements valid for the epoch
time provided (Inertial Reference Frame).
SPACECRAFT_ID NOAA's numerical ID of the spacecraft.
START_DAY_OF_YEAR Day-of-year on which the first scan in this
data set occurred.
START_JULIAN_DAY Day count, from 00h, 1 Jan. 1950, of the first
scan in this data set.
START_MILLISECONDS_OF_DAY Time of day in milliseconds at which
the first scan of this data set began. <<Notice that scan times
on data records will not mark the scan start, but rather the
center of dwell of the first FOV.>>
START_YEAR 4-digit year in which the first scan in this data
set occurred.
STATUS_CHANGE_SCAN_RECORD_NUM If the INSTRUMENT_STATUS_A1 changes during
the period covered by this data set, the record number at which
the change is first recognized is given in this field. If no
change occurs this field will contain 0.
SUB_REFLECTOR_TEMP_COEF - temperature conversion coefficients
a0 to a3 for sub reflector.
(4 values)
SYNC_ERROR_COUNT The sum of all (PACS-detected) auxiliary sync
errors detected in the input data for the entire data set; i.e.,
the PDP extracts the number of frame sync bit errors from the
frame quality flags in the 1a (see 1a requirements Table 2.3-4)
and accumulates the sum over the period covered by the data set.
TAPE_DIRECTION 0 --> time decrementing. << Who cares? The
1b*/1b will always be in increasing order.>>
TIME_SEQUENCE_ERROR_CODE If TIME_SEQUENCE_ERROR_RECORD is
nonzero, this indicator array contains the values reported in
TIME_PROBLEM_INDICATOR on the data record having the problem.
TIME_SEQUENCE_ERROR_RECORD If the pattern of scan times changes
during the period covered by this data set, the first record
showing the new pattern is given in this field. If the pattern
remains consistent throughout, this field is 0. This is
determined by the PDP, and the first record that shows either
condition 3 or 4<<4 is now spare>> in the TIME_PROBLEM_INDICATOR
will have its number placed in this field.<<Should this
definition be expanded to include all time errors (i.e., check
conditions 1 and 2 as well), and not just when there is a change
in the scan time pattern (i.e., a time discontinuity)?>>
TIP_PARITY_ERROR_COUNT The count of the total number of
PACS-detected TIP parity errors. The PDP finds the number of
TIP parity errors that were detected (by PACS) on each scan and
accumlates the sum over all the scans covered by the data set.
TIP_SOURCE_CODE Meaningless for this data set. The value will
be set to 0.
TRANSLATOR_ID The ID of the computer program that translated
this 1b* from some other format (e.g., 1b) or ported it from
some other computer (e.g., CEMSCS to Cray).
TX_COUNT_CORRECTIONS Transmitter bias corrections to be applied
to earth and calibration counts. Indices: 5 channels;
21 views (19 Earth views, space, warm view); 4 transmitters
(STX-1,STX-2,STX-3,SAR).
TX_POWER Average transmitter power at which the above bias
corrections were determined. Indices: 4 transmitters
(STX-1,STX-2,STX-3,SAR).
TX_NEWBIAS_CORRECTIONS Corrections to be applied to earth and
calibration views if new bias is on. Indices: 5 channels;
33 views (31 Earth views, space, warm view); 3 scan cycles.
T_R_CENTRAL_WAVE_NUMBER An array containing the central wave
numbers of the IR channels. <<temperature dependent?>>
T_R_CONVERSION_CONSTANT_1 - Band correction coefficient b defined
for each of 5 channels. Used to correct temperature of warm load.
(5 values: 1 coefficient for 5 channels)
T_R_CONVERSION_CONSTANT_2 - Band correction coefficient c defined
for each of 5 channels. Used to correct temperature of warm load.
(5 values: 1 coefficient for 5 channels)
VELOCITY_VECTOR_X_DOT_COMPONENT Velocity Vector X-dot Component
in kilometers/second {note 4}
VELOCITY_VECTOR_Y_DOT_COMPONENT Velocity Vector Y-dot Component
in kilometers/second {note 4}
VELOCITY_VECTOR_Z_DOT_COMPONENT Velocity Vector Z-dot Component
in kilometers/second {note 4}
VERSION_NUMBER Integer giving the version number of the
structure file used to create this 1b* data set.
WARM_TAR_FIX_BIAS_CORR - Warm target temperature
correction factor defined at 3 reference temperatures for each
channel.
(15 values: 3 coefficients for 5 channels)
YAW_ERROR_CONSTANT Yaw Euler angle reported in degrees times
1000 based on instrument misalignment errors or observed image
errors. Positive yaw is clockwise as viewed from above. {note 5}