Search Results
1201–1250 of 2184 results (0.001 seconds)
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attribute definition:
mess:aex_tgtb
The target brightness used for MDIS automatic exposure time calculation. In a test image that it analyzed to determine an exposure time using automatic exposure, DPU hardware generates a histogram of the image. The histogram is analyzed by the software to determine if the image is overexposed or underexposed, and the exposure time is adjusted accordingly by analyzing the histogram of raw DN values in different brightness bins. The background or dark current level (MESS:AEX_BACB) is taken into account and is assumed to be a constant value. A threshold of number of pixels (MESS:AEX_STHR) is allowed to exceed a target brightness (MESS:AEX_TGTB). Starting with the maximum value, the number of pixels exceeding the target is counted, and the brightness of the histogram bin in which that threshold is reached (MESS:AEX_STAT) is reported. The exposure time is scaled back by the ratio of MESS:AEX_TGTB/MESS:AEX_STAT. -
attribute definition:
bands
The BANDS element indicates the number of bands in an image or other object. -
attribute definition:
snapshot_mode_flag
The snapshot_mode_flag element indicates whether the instrument (usually a camera) was to end data collection after one instance, or after the commanded duration. Note: For Cassini, this refers to end of data collection after one spectral cube ('ON'), or after the commanded duration ('OFF'). -
attribute definition:
sample_type
The sample_type element indicates the data storage representation of sample value. -
attribute definition:
display_format
The display_format element provides display format information to software that formats data to an output device. Valid format types include DATE(x) where X is the number of digits in a date. Usually DATE(6) (YYYY-MM) or DATE(8) (YYYY-MM-DD). TIME(X) where X is the number of digits in a time statement. This is usually represented as TIME(6) (HH:MM:SS) or TIME(4) (HH:MM)> DATETIME is used for UTC system format date-times (MM-DD-YYYYTHH:MM:SS.HHH). JUSTLEFT is used for left-justified character strings, and JUSTRIGHT is used for right justification. DIGIT(X) is used where X is the number of digits in an integer, so 897 would be DIGIT(3). SCI(X,Y) is used where X is the number of significant digits before the decimal in scientific notation, and Y is the number following the decimal, so 1.293E-2 would be SCI(1,3). FLOAT(X) is used where X is the total number of digits in a floating point number, so 33.018746 would be FLOAT(8). USDOLLAR is used for monetary amounts in the indicated currency, PHONE is used for telephone numbers, and FTSPHONE is used for seven-digit numbers in the Federal Telephone System. -
attribute definition:
surface_based_inst_method
The surface_based_inst_method element identifies the method used to calculate the surface based instrument pointing. -
attribute definition:
msl:minimum_focus_distance
The MSL:MINIMUM_FOCUS_DISTANCE element specifies the estimated distance to the nearest pixel with less than 1 pixel of gaussian blur. A constant representing 'infinity' is a valid value ( Please see MSL:INFINITY_CONSTANT). Units are mm for MAHLI and meters for Mastcam. Values are based on instrument calibration and focus motor counts. -
attribute definition:
mro:spider_leg_30_temperature
The MRO:SPIDER_LEG_30_TEMPERATURE element provides the temperature of the HiRISE instrument's spider leg at the 30 degree location in degrees Centigrade. See Figure 2.3, MRO HiRISE EDR SIS, REFKEYID JPLD-32004. -
attribute definition:
msl:image_registration_flag
The MSL:IMAGE_REGISTRATION_FLAG element indicates whether intra-stack image registration has been performed during the focus merge operation. TRUE indicates that intra-stack image registration has been performed during the focus merge operation. FALSE indicates that images have been merged without translation. -
attribute definition:
geometry_projection_type
The GEOMETRY_PROJECTION_TYPE element describes the state of the pixels in an image before a re-projection has been applied. Describes if or how the pixels have been reprojected. RAW indicates reprojection has not been done; the pixels are as they came from the camera. For MER, this means the image uses a CAHVOR or one of the CAHVORE camera models. LINEARIZED means that reprojection has been performed to linearize the camera model (thus removing things like lens distortion). For MER, this means the image uses a CAHV camera model. -
attribute definition:
macropixel_size
The MACROPIXEL_SIZE element provides the sampling array size (e.g., 2x2, 4x4, 8x8), in pixels, that is used to reduce the amount of data an image contains by summing the values of the pixels, along the lines of the image. This process may be performed for images with increased exposure times in flight direction. Also known as summation mode. -
attribute definition:
measurement_source_desc
The measurement_source_desc element describes the source of light used in a laboratory-generated data set, or the radar transmitter in the case of radar astronomy experiments. -
attribute definition:
row_prefix_structure
The row_prefix_structure element indicates a pointer to a file that defines the structure of the row prefix bytes. See also: file_name Note: In the PDS this data element is obsolete. It is kept in the data dictionary for historical purposes to allow data validation tools to function. According to current standards, the structures of prefix and suffix data are illustrated through the use of the table object. -
attribute definition:
lro:dlre_ch4_tb_min
The LRO:DLRE_CH4_TB_MIN element gives the minimum recorded brightness temperature value for channel 4 in a DLRE RDR data product. -
attribute definition:
rad_footprint_latitude
The rad_footprint_latitude (VBF85) element provides the value of the crust-fixed latitude, at rad_spacecraft_epoch_tdb_time, of the intersection of the antenna boresight and the planetary surface (a sphere of radius average_planetary_radius element). -
attribute definition:
rad_flag_group
The RAD_FLAG_GROUP element identifies the following flag fields. RR_GEOC=0x0001 Geometry values have been corrected for ephemeris errors in the phase. RR_RADC=0x0002 The average_planetary_radius value has been corrected by altimeter radius values. RR_NOS1=0x0004 sar_average_backscatter[0] value missing. RR_NOS2=0x0008 sar_average_backscatter[1] value missing. RR_BAD=0x0010 The elements brightness_temperature, average_planetary_radius, planet_reading_system_temp, assumed_warm_sky_temperature, rad_receiver_system_temp, surface_emission_temperature, and surface_emissivity, and surface_temperature should be ignored. RR_CAL=0x0020 The spacecraft is operating in its 'radiometric calibration' mode, in which the SAR boresight is pointed away from the planet. The rad_footprint_latitude and rad_footprint_longitude fields contain the boresight latitude and longitude in the inertial (J2000) coordinate system, not in VBF85. RR_NRAD=0x0040 The average_planetary_radius value could not be estimated from the topography model. RR_RAD2=0x0080 This record was created under software version 2 or higher, in which elements rad_emissivity_partial, surface_temperature, raw_rad_antenna_power, raw_rad_load_power, alt_skip_factor, alt_gain_factor, and alt_coarse_resolution are significant. -
attribute definition:
required_storage_bytes
The required_storage_bytes element provides the number of bytes required to store an uncompressed file. This value may be an approximation and is used to ensure enough disk space is available for the resultant file. Note: For Zip file labels, this keyword provides the total size of all the data files in the Zip file after being uncompressed. For the software inventory template, this is often the size of the uncompressed distribution tar file. -
attribute definition:
solar_north_pole_clock_angle
The SUN_NORTH_POLE_CLOCK_ANGLE element specifies the direction of the north pole of the sun as projected onto the image plane. It is measured from the 'upward' direction, clockwise to the direction toward the sun's north pole, when the image is displayed as defined by the SAMPLE_DISPLAY_DIRECTION and LINE_DISPLAY_DIRECTION elements. -
attribute definition:
mess:source
Source of an MDIS image, either a scene image from the CCD or one of two test patterns: 0 = CCD 1 = Test pattern 2 = Inverted test pattern. -
attribute definition:
dawn:dpu_hardware_id
Both DPUs for FC1 and FC2 have the same DPU ID because they are identical. -
attribute definition:
inst_optical_switch_state
The INST_OPTICAL_SWITCH_STATE element indicates whether the optical switch moving mirror is at the start of the scan. Valid values are PRIMARY and REDUNDANT. -
attribute definition:
b_axis_radius
The b_axis_radius element provides the value of the intermediate axis of the ellipsoid that defines the approximate shape of a target body. 'B' is usually in the equatorial plane. -
attribute definition:
exposure_tbl_update_flag
The EXPOSURE_TBL_UPDATE_FLAG element indicates whether or not an exposure table entry was updated. -
attribute definition:
data_set_or_instrument_parm_nm
The data_set_or_instrument_parameter_name element provides either a data_set_parameter_name or an instrument_parameter_name. That is, this element may have values which are either the name of a parameter derived from measured data (the data_set_parameter_name) or the name of a parameter measured by an instrument (the instrument_parameter_name). -
attribute definition:
edr_software_name
The edr_software_name element identifies the name and version of the Clementine Mission software that generated the EDR products. -
attribute definition:
orbit_name
The ORBIT_NAME element identifies the orbital revolution of the spacecraft around a target body in the manner specified by the mission that archived the data set. Use of the ORBIT_NUMBER element is preferred if the mission orbit naming convention is a continuously increasing number. -
attribute definition:
pericenter_precession_rate
The pericenter precession rate element defines the rate at which the pericenter of an eccentric orbit rotates about the central body's pole. See also RING_PERICENTER_LONGITUDE. -
attribute definition:
calibration_lamp_state_flag
The calibration_lamp_state_flag element indicates whether a lamp used for onboard camera calibration is turned on or off. -
attribute definition:
non_range_sharp_looks
The non_range_sharp_looks element provides the value of the number of statistically independent measurements of echo profile that were summed to produce the value for the profile non_range_sharp_echo_prof element. -
attribute definition:
standard_value_name
The standard_value_name element provides a value for a particular data element. -
attribute definition:
var_data_type
Tables with variable length records may be stored in two files, with the fixed-length fields in one file and the variable-length fields in the other, usually named *.VAR. In a COLUMN object, the presence of the keywords VAR_DATA_TYPE, VAR_ITEM_BYTES, and VAR_RECORD_TYPE indicates that the column's value is an offset into a variable length record in the *.VAR file. VAR_DATA_TYPE specifies the data type of the data found at the location in the *.VAR file. It is analogous to the keyword DATA_TYPE. -
attribute definition:
spacecraft_orientation_desc
The SPACECRAFT_ORIENTATION_DESC element provides the definition, meaning and standard values for the spacecraft_orientation element. This element should be used in conjunction with the spacecraft_orientation element. The information given shall cover at least the reference frame used for the spacecraft orientation and the standard values that are used with the data set. -
attribute definition:
instrument_power_consumption
The instrument_power_consumption element provides power consumption information for an instrument. Note: instrument_power_consumption may vary with different modes of instrument operation. -
attribute definition:
center_elevation
The CENTER_ELEVATION is the angular elevation from the azimuthal reference plane of the center point of an image or observation. Elevation is measured in a spherical coordinate system. The zero elevation point lies in the azimuthal reference plane and positive elevation is measured toward the positive direction of the principal axis of the spherical coordinate system. -
attribute definition:
shutter_state_flag
The shutter_state_flag element indicates whether a shutter (usually a camera's) is in the enabled or disabled state. Note: For Cassini, this refers to the infrared camera shutter. -
attribute definition:
dark_current_download_flag
The dark_current_download_flag element indicates whether or not an image of the dark strip area of the CCD was downlinked along with the image data. -
attribute definition:
confidence_level_note
The confidence_level_note element is a text field which characterizes the reliability of data within a data set or the reliability of a particular programming algorithm or software component. Essentially, this note discusses the level of confidence in the accuracy of the data or in the ability of the software to produce accurate results. -
attribute definition:
altimetry_footprint_tdb_time
The altimetry_footprint_tdb_time element provides the value of the ephemeris time at which the spacecraft passed directly over the center of the footprint. As each footprint is composed of data collected from several altimeter bursts, this epoch doesn't necessarily coincide with a particular burst. -
attribute definition:
mro:ms_truss_leg_0_b_temperature
The MRO:MS_TRUSS_LEG_0_B_TEMPERATURE element provides the temperature of the HiRISE instrument's metering structure truss 0-B leg in degrees Centigrade. See Figure 2.3, MRO HiRISE EDR SIS, REFKEYID JPLD-32004. -
attribute definition:
system_event_user_note
The system_event_user_note element provides information about a system event. Example value: THE SYSTEM WILL BE DOWN FOR PREVENTATIVE MAINTENANCE FROM NOON UNTIL MIDNIGHT. -
attribute definition:
mro:atmospheric_corr_flag
The MRO:ATMOSPHERIC_CORR_FLAG element indicates the application of a correction for atmospheric gas absorptions using empirically derived and detector column specific Mars atmosphere transmission spectra. The reference atmospheric transmission spectra are derived from a suite of scans over Olympus Mons and are matched to a given targeted observation to minimize residual spectral structure across the wavelengths affected by the 2000 nm CO2 absorption. N/A indicates the absence of IR (L detector) data on which to apply this procedure. -
attribute definition:
converter_voltage_count
The CONVERTER_VOLTAGE_COUNT element provides the voltage of a power supply converter, measured in raw counts. Note: For Mars Pathfinder, this referred specifically to the current of the APXS 9 volt converter at the end of the spectrum measurement. -
attribute definition:
lro:complete_lines
The LRO:COMPLETE_LINES element gives the number of lines of data in a data product that are complete; that is, with no missing data. -
attribute definition:
inst_cmd_cal_co_add
The INST_CMD_CAL_CO_ADD element gives the commanded value of the number of calibration observations to be averaged together for a calibration product. -
attribute definition:
sequence_samples
The sequence_samples element specifies the number of samples in a given observation sequence. -
attribute definition:
native_start_time
The native_start_time element provides a time value at the beginning of a time period of interest. Native time is 'native to' (that is, resident within) a given set of data, in those cases in which the native time field is in a format other than the standard UTC system format. For example, the spacecraft clock count could be a native time value. -
attribute definition:
rotation_torque_parameter
The ROTATION_TORQUE_PARAMETER element provides the open-loop voltage supplied to an instrument rotation motor. Note: For MER, this is the grinding wheel rotation motor during initialization/diagnostics, seek and scan, grinding, and brushing operations. -
attribute definition:
msl:error_model_parms_name
The MSL:ERROR_MODEL_PARMS_NAME element specifies the name assigned by the error model for each parameter in MSL:ERROR_MODEL_PARMS. For example, for the MSL model 'MIPL_CONST_DISPARITY_PROJECTED_V1', the value would be 'DISPARITY_ERROR'. -
attribute definition:
lro:dlre_date_max
The LRO:DLRE_DATE_MAX element gives the maximum recorded date value in a DLRE RDR data product. -
attribute definition:
mission_objectives_summary
The mission_objectives_summary element describes the major scientific objectives of a planetary mission or project.
Data Sets and Information
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