Search Results
1351–1400 of 2184 results (0.001 seconds)
-
attribute definition:
mro:opt_bnch_fpa_temperature
The MRO:OPT_BNCH_FPA_TEMPERATURE element provides the temperature of the HiRISE instrument's optical bench near the Focal Plane Array in degrees Centigrade. See Figure 2.3, MRO HiRISE EDR SIS, REFKEYID JPLD-32004. -
attribute definition:
processing_history_text
The processing_history_text element provides an entry for each processing step and program used in generating a particular data file. -
attribute definition:
mess:subf_dy2
The number of rows in the SECOND rectangular subframe within an MDIS image to be retained after image compression by the MESSENGER spacecraft main processor (MP). There may be up to five subframes per image as defined by MESS:SUBFRAME. Subframes are defined in the original 1024x1024 pixel MDIS coordinate system before pixel binning as described by MESS:FPU_BIN and MESS:PIXELBIN. -
attribute definition:
channel_group_name
The channel_group_name element provides the name given to a group of particle detector channels that are activated or deactivated as a group in any instrument mode configuration. The grouping is not tied to the physical groupings of detectors, and more than one group can be activated during any one mode. -
attribute definition:
mro:ikf_model_order_z
The MRO:IKF_MODEL_ORDER_Z element is one of the control parameters for the CRISM hyperspectral data filtering application used to convert TRR3 radiance data to I/F and indicates the dimensionality of the model in the Z direction used in the Iterative Kernel Filter procedure. -
attribute definition:
bias_strip_mean
The bias_strip_mean element provides the mean value of the bias strip (also known as overclocked pixels). The bias strip is an area of a CCD that provides a measure of the bias level of the electronics (ie., electronics noise). It is not affected by dark current. Note: For Cassini, this mean does not include the values from the first and last lines of the CCD. -
attribute definition:
full_name
The full_name element provides the complete name or identifier for a person or object. For an individual, full name includes the name as well as titles and suffixes. For an object, full name provides the spelled-out name that in some cases corresponds to an 'id'. -
attribute definition:
dawn:v_m5_analog
Name: V-5AN Location: PCU H/K Sensor: PCU Voltage Monitor Sensor Type: Voltage Sensor Gain: -0.0005 Offset: 0 Sensor Offset FC1: 0 Sensor Offset FC2: 0 V_M5_ANALOG = DN * Gain + Offset + Sensor Offset [V] Lower limit red: -5.8 V Lower limit yellow: -5.5 V Upper limit yellow: -4.7 V Upper limit red: -4.5 V -
attribute definition:
lro:dlre_utc_min
The LRO:DLRE_UTC_MIN element gives the minimum recorded UTC value in a DLRE RDR data product. -
attribute definition:
earth_base_id
The earth_base_id element provides a unique identifier for the laboratory, observatory, or other location of an earth-based instrument. -
attribute definition:
mess:comp_alg
12 to 8 bit compression algorithm (0-7) used to compress images from 12 to 8 bits. Whether this option is enabled is indicated by MESS:COMP12_8. The compression is implemented using one of eight lookup tables, which are optimized to the lower WAC CCD read noise and higher NAC read noise, light levels, and bias level (nominal or after inflight drift): 0 = Lo-noise hi-bias SNR proportional. Case: Either NAC or WAC, for nominal bias (all DNs greater than 12-bit 230). Formulation: Maps 12-bit DNs between bias and saturation into 8 bits, proportional to SNR. Information loss is spread evenly over dynamic range. Usage: Typical imaging with varied brightness. 1 = Lo-noise hi-bias DN-weighted SNR proportional. Case: Low-noise (WAC) CCD, bias nominal (all DNs greater than 12-bit 230). Formulation: Maps 12 bits between bias and saturation into 8 bits proportional to sliding scale. Information is preferentially retained at the low DN end. Usage: Faint objects. Saturates at a DN of 3000. 2 = Hi-noise hi-bias DN-weighted SNR proportional. Case: High-noise (NAC) CCD, bias nominal (all DNs greater than 12-bit 230). Formulation: Maps 12 bits between bias and saturation into 8 bits proportional to sliding scale. Information is preferentially retained at the low DN end. Usage: B/W, mostly low brightness. 3 = Lo-noise med-bias SNR proportional. Case: Either CCD, assuming bias has dropped tens DN (all DNs greater than 12-bit 180). Formulation: Maps 12-bit DNs between bias and saturation into 8 bits, proportional to SNR. Information loss is spread over dynamic range. Usage: Typical imaging, varied brightness. 4 = Lo-noise med-bias DN-weighted SNR proportional. Case: Lo-noise (WAC) CCD, assuming bias has dropped tens DN (all DNs greater than 12-bit 180). Formulation: Maps 12 bits between bias and saturation into 8 bits proportional to sliding scale. Information retained at low DN end. Usage: Faint objects. Saturates at a DN of 3000. 5 = Hi-noise med-bias DN-weighted SNR proportional. Case: High-noise (NAC) CCD, assuming bias has dropped tens DN (all DNs greater than 12-bit 180). Formulation: Maps 12 bits between bias and saturation into 8 bits proportional to sliding scale. Information is retained preferentially at the low end of the DN range. Usage: B/W, mostly low brightness. 6 = Zero-bias SNR proportional. Case: Contingency; assuming bias decreased to near 0 from the nominal 230 12-bit DNs. Formulation: Maps 12-bit DNs between bias and saturation into 8 bits, proportional to SNR. Information loss is spread over the dynamic range. Usage: Typical imaging, varied brightness. 7 = Linear. Case: either CCD, bias or read noise. Formulation: Maps 12-bit DNs between the bias level and saturation linearly into 8-bit space. Usage: High brightness mapping; information loss greatest at low DNs, preserves information at high DNs. -
attribute definition:
data_object_type
The data_object_type element identifies the data object type of a given set of data. Example values: IMAGE, MAP, SPECTRUM Note: Within the PDS, data object types are assigned according to the standards outlined in the PDS Standards Reference. Note: within AMMOS and only for the Magellan catalog, this element is used as an alias for data_set_id. The use of data_object_type as such provides backward compatibility with earlier AMMOS conventions. The use of this element as an alias for data_set_id is not recommended for any new tables. See data_set_id. -
attribute definition:
telemetry_fmt_extension_type
The TELEMETRY_FMT_EXTENSION_TYPE element provides additional information about what kind of telemetry was collected during scene looks versus calibration looks. Valid values are: LONG (Scene: Long Telemetry, Calibration: Long Telemetry) SHORT (Scene: Short Telemetry, Calibration: Short Telemetry) MIXED (Scene: Short Telemetry, Calibration: Long Telemetry) -
attribute definition:
target_sun_position_vector
The TARGET_SUN_POSITION_VECTOR element provides the x-, y-, z- components of the position vector from the target to the sun expressed in J2000 coordinates, and corrected for light time and stellar aberration, evaluated at the epoch at which the image was taken. -
attribute definition:
core_base
The core_base element, together with the core_multiplier element, describes the scaling performed on a 'true' data value to compute the value stored in the data object. It also defines the method for recovering the 'true' value: 'true'_value = base + multiplier * stored_value In ISIS practice, the value of core_base is 0.0 for real core items, since scaling is not usually necessary for floating point data. Note: Base and multiplier correspond directly to the PDS standard data elements OFFSET and SCALING_FACTOR. -
attribute definition:
reference_coord_system_index
The REFERENCE_COORD_SYSTEM_INDEX element identifies which instance of the coordinate system named by REFERENCE_COORD_SYSTEM_NAME is the reference coordinate system for the group in which the keyword occurs. This index is a set of integers which serve to identify coordinate system instances in a mission-specific manner. Note: For MER, the indices are based on the ROVER_MOTION_COUNTER. This counter is incremented each time the rover moves (or may potentially have moved, e.g., due to arm motion). The full counter may have up to 5 values (SITE, DRIVE, IDD, PMA, HGA), but normally only the first value (for SITE frames) or the first two values (for LOCAL_LEVEL or ROVER frames) are used for defining reference coordinate system instances. It is legal to use any number of indices to describe a reference coordinate system instance, however. See also REFERENCE_COORD_SYSTEM_NAME and COORDINATE_SYSTEM_INDEX. -
attribute definition:
user_product_id
The user_product_id element provides an alternate logical file name constructed according to a producer-defined naming convention. -
attribute definition:
integration_duration
The duration of a time over which a particular instrument is observing or integrating. -
attribute definition:
lro:dlre_orientlat_max
The LRO:DLRE_ORIENTLAT_MAX element gives the maximum recorded orientation latitude value in a DLRE RDR data product. -
attribute definition:
sun_view_direction
The SUN_VIEW_DIRECTION element provides an array that represents a unit vector identifying the sun viewing direction. -
attribute definition:
msl:projection_z_axis_vector
The MSL:PROJECTION_Z_AXIS_VECTOR element specifies a unit vector defining the Z axis for a given projection. For Orthographic, Orthorectified, and Vertical projections, this vector defines the projection axis for the mosaic. All points along a line parallel to this axis are projected to the same spot in the projection plane. For the Cylindrical-Perspective projections, this defines the new axis of the circle around which the synthetic camera orbits (i.e. the normal to the circle), after the cameras have been rotated to correct for rover tilt. CAMERA_ROTATION_AXIS_VECTOR contains the axis before rotation; the difference in these two indicate the rotation amount. -
attribute definition:
fax_number
The fax_number data element provides the area code and telephone number needed to transmit data to an individual or a node via facsimile machine. -
attribute definition:
missing_pixels
The missing_pixels element provides the number of pixels missing from an image or observation. Note: For Cassini, this refers to the core of a spectral cube, which indicates that the expected number of pixels (as determined by the commanded cube dimensions) did not arrive. The positions of these pixels are filled with CORE_NULL. Pixels purposefully set to CORE_NULL (e.g., due to time insertion) are not included in this total. -
attribute definition:
facility_name
The facility_name element identifies a department, laboratory, or subsystem that exists within an institution. -
attribute definition:
column_value_type
The column_value_type element indicates whether a standard value is considered to be an available value (the value currently exists in the PDS catalog) or a possible value (the value does not currently exist in the PDS catalog but may exist in the future). Example values: A (available value) or P (possible value). -
attribute definition:
offset_grating_position
The NIMS instrument has only 17 detectors but takes data in as many as 408 wavelengths by moving a grating across 31 possible physical positions. The offset grating position is a physical position from which the logical positions of the various instrument modes are defined. Its normal value is 4, but it may be commanded between 0 and 7 should the instrument's wavelength calibration change. See the NIMS instrument paper (R. W. Carlson et al, 'Near-Infrared Mapping Spectrometer Experiment on Galileo', Space Science Reviews 60, 457-502, 1992) for details. -
attribute definition:
stop_primary_key
In a TABLE object, the STOP_PRIMARY_KEY element indicates the end of the range of values for the PRIMARY_KEY column in the table. If PRIMARY_KEY consists of multiple column names, then STOP_PRIMARY_KEY is a sequence of values, one for each column. The data type of this keyword is determined by the data type of the column of interest. -
attribute definition:
lro:dlre_ch9_radiance_min
The LRO:DLRE_CH9_RADIANCE_MIN element gives the minimum recorded value of radiance for channel 9 in a DLRE RDR data product. -
attribute definition:
housekeeping_clock_count
The housekeeping_clock_count element provides the spacecraft clock value at the time that slow housekeeping was collected. Slow housekeeping is the gathering of all available engineering data values, or items, that pertain to and describe the condition of the instrument itself. Typically this value is read from the last (most recent) housekeeping packet received before the end of the spectral cube downlink. -
attribute definition:
mro:measurement_max_resolution
The MRO:MEASUREMENT_MAX_RESOLUTION element provides the maximum resolution of a laboratory spectral measurement. -
attribute definition:
detector_temperature
The DETECTOR_TEMPERATURE is the temperature that the instrument (detector) operated at while a measurement was made. The importance for Viking Lander is that the radiometric calibration is slightly dependent on detector temperature. -
attribute definition:
rad_footprint_longitude
The rad_footprint_longitude (VBF85) element provides the crust-fixed longitude, at rad_spacecraft_epoch_tdb_time, of the intersection of the antenna boresight and the planetary surface (a sphere of radius average_planetary_radius). -
attribute definition:
lro:dlre_vlooky_max
The LRO:DLRE_VLOOKY_MAX element gives the maximum recorded value of the Y component of the Diviner Look Unit Vector in a DLRE RDR data product. -
attribute definition:
mro:spatial_rescaling_file
The MRO:SPATIAL_RESCALING_FILE element gives the name of the file that has the difference in magnification that is removed when spatial rescaling of CRISM VNIR data to IR data occurs in sensor space. Spatial rescaling is to remove differences in magnification between VNIR data and IR data. VNIR data are corrected to the spatial scale of the IR data at 2300 nm (row 257). -
attribute definition:
mro:focus_position_count
The MRO:FOCUS_POSITION_COUNT element provides the raw count of the focus mechanism position in a HiRISE observation. -
attribute definition:
release_medium
The release_medium element provides a textual description for the medium used in the distribution of a released data set or portion of a data set. Examples include: CD-ROM, DVD, etc. -
attribute definition:
help_id
The help_id element identifies a PDS topic for which help text is available. -
attribute definition:
model_component_id
The MODEL_COMPONENT_ID element is used in conjunction with the MODEL_COMPONENT_n elements, where n is a number. The MODEL_COMPONENT_ID value should consist of a sequence of identifiers (usually 1 character), where each identifier corresponds to a model component vector. The first id in the sequence corresponds to MODEL_COMPONENT_1, the second corresponds to MODEL_COMPONENT_2, etc. For example, for a geometric camera model with a value of CAHV for MODEL_NAME, the MODEL_COMPONENT_ID would be (C, A, H, V). Please see the MODEL_COMPONENT_NAME data element for more details. -
attribute definition:
axis_interval
The axis_interval element identifies the spacing of value(s) for an ordered sequence of regularly sampled data objects along a defined axis. For example, a spectrum measured in the 0.4 to 3.5 micrometer spectral region at 0.1 micrometer intervals, but whose values are stored in decending order in an ARRAY object would have an axis_interval = -0.1. For ARRAY objects with more than 1 axis, a sequence of values is used to identify the axis_interval associated with each axis_name. -
attribute definition:
mess:att_flag
Attitude quality flag for the spacecraft attitude quaternion in the header of an MDIS image: 7 = Attitude Knowledge OK (At least 1 Star Tracker is available and at least 50% of gyro data is valid) 6 = Attitude Knowledge OK (No Star Tracker is available but at least 50% of gyro data is valid) 5 = Attitude Knowledge OK (No Star Tracker is and between 10% and 50% of gyro data is valid -OR- At least 1 Star Tracker is valid and between 0% and 50% of gyro data valid) 4 = not a legal option 3 = Attitude Knowledge BAD (At least 1 Star Tracker is available and at least 50% of gyro data is valid) 2 = Attitude Knowledge BAD (No Star Tracker is available but at least 50% of gyro data is valid) 1 = Attitude Knowledge BAD (No Star Tracker is available and between 10% and 50% of gyro data is valid -OR- At least 1 Star Tracker is valid and between 0% and 50% of gryo data is valid) 0 = Attitude Knowledge BAD (No Star Tracker data fewer than 10% of gyro data valid). -
attribute definition:
auto_exposure_data_cut
The auto_exposure_data_cut element provides the DN value which a specified fraction of pixels is permitted to exceed. The fraction is specified using the auto_exposure_pixel_fraction keyword. -
attribute definition:
meteorite_type
The meteorite_type element defines which class a meteorite belongs to based on the meteorite composition and physical characteristics. -
attribute definition:
midnight_longitude
The midnight_longitude element identifies the longitude on the target body at which midnight was occurring at the time of the start of an observation sequence. Midnight_longitude is used to assist in geometry calculations. Note: The coordinate_system_type data element should be used in conjunction with this data element. -
attribute definition:
nssdc_data_set_id
The nssdc_data_set_id element is the identifier used by the NSSDC for a data set or data product. A PDS data set or collection may have one or more associated NSSDC data sets. -
attribute definition:
ring_semimajor_axis
The ring semimajor axis element defines the mean radius of an eccentric ring, i.e. the average of the pericenter and apocenter distances. -
attribute definition:
expertise_area_desc
The expertise_area_desc element describes a particular area of individual expertise. -
attribute definition:
maximum_travel_distance
The MAXIMUM_TRAVEL_DISTANCE element gives the maximum allowable travel distance of the MER RAT instrument along the Z axis. -
attribute definition:
sfdu_label_and_length
The SFDU_label_and_length element identifies the label and length of the Standard Format Data Unit (SFDU). -
attribute definition:
dark_level_correction
The DARK_LEVEL_CORRECTION element provides the DN value subtracted from every pixel in an image for purposes of radiometric calibration. -
attribute definition:
core_minimum_dn
The core_minimum_dn element provides the lowest digital number (DN) value in the core of a spectral cube (ignoring values of CORE_NULL).
Data Sets and Information
Result pages: 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37