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attribute definition:
mess:att_q2
The pitch value of the vector component of the attitude quaternion representing spacecraft attitude, in the header of an MDIS image. -
attribute definition:
msl:pointing_model_parms
The MSL:POINTING_MODEL_PARMS element specifies the numeric parameters needed by the pointing model identified in POINTING_MODEL_NAME. The meaning of any given parameter is defined by the pointing model. -
attribute definition:
ring_eccentricity
The ring eccentricity element defines the non-circularity of a ring. It is equal to (apocenter_radius - pericenter_radius) / (2*mean_radius) -
attribute definition:
dawn:vir_ir_start_x_position
This keyword gives the X coordinate of the first CCD pixel used on the IR FPA. This quantity determines the correspondence between wavelength and spectral channels. -
attribute definition:
packing_flag
The packing_flag element indicates whether multiple spectral cubes were packed and stored as a single spectral cube product, due to their small size and lack of unique timing information. -
attribute definition:
time_range_number
The time_range number is unique to AMMOS-MGN ephemeris files and identifies groups of time ranges in the catalog object. -
attribute definition:
map_number
The map_number element provides a numeric identifier for a given map. -
attribute definition:
test_phase_name
The TEST_PHASE_NAME element identifies the phase of a test for instrument calibration. -
attribute definition:
range_sharp_prof_corrs_index
The range_sharp_prof_corrs_index element provides the value of the index of the element in range_sharp_echo_profile that corresponds to the first element in best_range_sharp_model_tmplt[0]. The indices start at zero. -
attribute definition:
ch1:obs_geometry_file_name
The CH1:OBS_GEOMETRY_FILE_NAME element provides the name of the observation geometry file used as input to produce an M3 reflectance image. -
attribute definition:
orbit_number
The orbit_number element identifies the number of the orbital revolution of the spacecraft around a target body. Note: In PDS Magellan altimetry and radiometry labels, the orbit_number data element refers to the Magellan orbit number corresponding to the following files: ephemeris, altimetry, and radiometry. -
attribute definition:
mro:wavelength_filter
The MRO:WAVELENGTH_FILTER keyword identifies which of four CRISM onboard menus of rows was selected for downlink. The four choices are 0, 1, 2, or 3. Each filter is a vector of 480 0's or 1's, one per row of the detector. 0 indicates that data are not saved; 1 indicates that data are saved. The values in the four vectors are in the file named by MRO:WAVELENGTH_FILE_NAME. -
attribute definition:
order_status_id
The order_status_id element identifies the status of an order. -
attribute definition:
minimum_longitude
The minimum_longitude element specifies the easternmost (right_most) longitude of a spatial area, such as a map, mosaic, bin, feature, or region. See longitude. Note: The minimum longitude data element is obsolete and should no longer be used. The assumed coordinate system was planetographic for prograde rotators (PDS Cartographic Standards V3.0). See coordinate_ system_type, easternmost_longitude and westernmost_longitude. -
attribute definition:
data_type
The data_type element supplies the internal representation and/or mathematical properties of a value being stored. When DATA_TYPE is used within a FIELD object definition, its value applies only when the field is populated. Note: In the PDS, users may find a bit-level description of each data type in the Standards Reference document. -
attribute definition:
best_range_sharp_model_tmplt
The best_range_sharp_model_tmplt element provides the value of the theoretical echo profile, at one-baud (0.21 microsecond) intervals, that best approximates the peak of the range_sharp_echo_profile array. The optimal fit is made by matching the best_range_sharp_model_tmplt[i] element with the range_sharp_echo_profile[i+range_sharp_prof_corrs_index] element, where i is a value from 0 to 49. -
attribute definition:
template
The template element provides the identifier that appears in a physical template header. -
attribute definition:
mro:sphere_temperature
The MRO:SPHERE_TEMPERATURE element gives the temperature of the CRISM onboard integrating sphere. It is used for modeling the output radiance of the sphere as a function of sphere temperature. -
attribute definition:
band_sequence
The band_sequence element identifies the order in which spectral bands are stored in an image or other object. Note: In the PDS, this data element is used to identify the primary colors composing a true color image. The standard values that appear in sets of three support color image display. They are not appropriate for describing multi-spectral bands. For these, it is advisable to use the sampling_parameter keywords defined elsewhere in the PSDD. -
attribute definition:
sampling_parameter_unit
The sampling_parameter_unit element specifies the unit of measure of associated data sampling parameters. -
attribute definition:
mro:numerical_filter_type
The MRO:NUMERICAL_FILTER_TYPE element is the parameter used by the SHARAD ground processing software for the selection of the method used for building the numerical filter used in the range compression of the signal. -
attribute definition:
mro:ikf_model_order_y
The MRO:IKF_MODEL_ORDER_Y 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 Y direction used in the Iterative Kernel Filter procedure. -
attribute definition:
pressure
The PRESSURE element identifies the type of pressure used in instrument calibrations. -
attribute definition:
sub_spacecraft_line
The sub_spacecraft_line element is the image line containing the sub-spacecraft point. The subspacecraft point is that point on a body's reference surface where a line from the spacecraft center to the body center intersects the surface. -
attribute definition:
target_name
The target_name element identifies a target. The target may be a planet, satellite,ring,region, feature, asteroid or comet. See target_type. -
attribute definition:
line_resolution
The LINE_RESOLUTION element provides the vertical size of the pixel at the center of an image as projected onto the surface of the target. -
attribute definition:
msl:software_parameter_value
The MSL:SOFTWARE_PARAMETER_VALUE element specifies the value of a parameter value used as input to the primary generating software named in SOFTWARE_MODULE_NAME. Array values can be nested. Example: 'SOFTWARE_PARAMETER_VALUE = (value 1, (value2A, value2b),value3)' For MSL, this keyword may be placed in a xxx_HISTORY_PARMS group, where 'xxx' is the task name. There may be multiple groups to accommodate multiple software tasks. -
attribute definition:
lro:dlre_orientlat_min
The LRO:DLRE_ORIENTLAT_MIN element gives the minimum recorded orientation latitude value in a DLRE RDR data product. -
attribute definition:
frame_type
MER to supply at a later date. -
attribute definition:
c_axis_radius
The c_axis_radius element provides the value of the semiminor axis of the ellipsoid that defines the approximate shape of a target body. 'C' is normal to the plane defined by 'A' and 'B'. -
attribute definition:
rotational_element_desc
The rotational_element_desc element describes the standard used for the definition of a planet's pole orientation and prime meridian. The description defines the right ascension and the declination values used to define the planet pole, and the spin angle value of the planet referenced to a standard time (typically EME1950 or J2000 time is used). Periodically, the right ascension, declination, and spin values of the planets are updated by the IAU/IAG/COOSPAR Working Group On Cartographic Coordinates and Rotational Elements because an unambiguous definition of a planet's coordinate system requires these values. -
attribute definition:
oblique_proj_z_axis_vector
Unit vector in the direction of the Z axis of the oblique coordinate system used in the OBLIQUE CYLINDRICAL projection, in terms of the X, Y, and Z axes of the standard body-fixed coordinate system. In each system, the X axis points from the body center toward longitude and latitude (0,0) in that system, and the Z axis to (0,90), and the Y axis completes a . right-handed coordinate system. The OBLIQUE_PROJ_X/Y/Z_AXIS_VECTORS make up the rows of a rotation matrix that when multiplied on the left of a vector referenced to the standard coordinate system converts it into its equivalent in the oblique coordinate system. This rotation matrix is the product of successively applied rotations by +/- OBLIQUE_PROJ_POLE_LONGITUDE around the Z axis, 90 - OBLIQUE_PROJ_POLE_LATITUDE around the once-rotated Y axis, and OBLIQUE_PROJ_POLE_ROTATION around the twice-rotated Z axis. For the first of these rotations, a positive sign is used if the OBLIQUE_PROJ_POLE_LONGITUDE is given as an east longitude, and a negative sign if it is expressed as a west longitude. -
attribute definition:
msl:spec_image_type
The MSL:SPEC_IMAGE_TYPE element provides an identifier for the type of ChemCam spectrometer image. 0 = 1D [dark] average, 1 = 1D [dark] single, 2 = 1D [passive] single, 3 = 1D average, 4 = 1D single, 5 = 2D [diagnostic], 6 reserved. The [dark], [passive] and [diagnostic] are ineffective descriptors, only the Ds and single/average matter. Default = 2. -
attribute definition:
grating_positions
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 number of grating positions is determined by the instrument mode, typically 24 in the LONG MAP and LONG SPECTROMETER modes, 12 in the FULL modes, 6 in the SHORT modes and 1 in the FIXED modes. 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:
peer_review_id
The peer_review_id element provides a unique identifier assigned by the bulk loading software to each peer review information set saved in the PDS data base. -
attribute definition:
quaternion_desc
The QUATERNION_DESC element is a pointer to an accompanying quaternion description file used to describe the formation rules for the quaternion and the specific rotation accomplished by application of that quaternion. This keyword is required to be used in conjunction with the QUATERNION keyword. The file to which this keyword points is to be included in the /doc subdirectory of an archive product. This particular definition is focused on the PDS use of quaternions. In typical space science usage (and especially within the SPICE context) a quaternion is used to rotate a Cartesian 3-component position vector given in one reference frame (the 'From' frame) to a second frame (the 'To' frame). The quaternion description file must clearly provide three pieces of information. These items are as follows. 1) Define the structure or organization of the quaternion: specify which component provides the angle of rotation and which three components specify the vector about which the rotation is to occur. It is best if this description includes the actual equations used to form a rotation matrix from the quaternion elements being specified. As an example, in the SPICE context, the equations for forming a rotation matrix (a C-matrix) from the four quaternion elements are: +- -+ | 2 2 | | 1 - 2 ( q2 + q3 ) 2 (q1 q2 - q0 q3) 2 (q1 q3 + q0 q2) | | | | | | 2 2 | CMAT = | 2 (q1 q2 + q0 q3) 1 - 2 ( q1 + q3 ) 2 (q2 q3 - q0 q1) | | | | | | 2 2 | | 2 (q1 q3 - q0 q2) 2 (q2 q3 + q0 q1) 1 - 2 ( q1 + q2 ) | | | +- -+ 2) Provide a clear, unambiguous identification (and mathematical specification, if not readily available elsewhere) of the base frame (the 'From' frame) in which an input vector is given; 3) Provide a clear, unambiguous identification (and mathematical specification, if not readily available elsewhere) of the target frame (the 'To' frame) into which the input vector will be rotated by direct application of the quaternion. It is strongly suggested that equations showing how to apply the rotation matrix derived from the quaternion be provided. As an example, in the SPICE system: A C-matrix is a 3x3 matrix that transforms Cartesian coordinates referenced to a ``base frame'' to coordinates in a target frame, which is often a frame fixed to an instrument, antenna, or other spacecraft structure for which knowing the orientation ('the pointing') is important. The C-matrix transforms coordinates as follows: if a vector v has coordinates ( x, y, z ) in some base reference frame (like J2000), then v has coordinates ( x', y', z' ) in instrument-fixed coordinates, where [ ] [ x ] [ x'] | C-matrix | | y | = | y'| [ ] [ z ] [ z'] With regards to the quaternion structure issue, unlike for some geometric quantities there is no standard for how to form a quaternion. Two formation rules are in common use (see below), and it is strongly suggested that users pick one of these. But whatever is the rule being used in the particular instance must be carefully noted in the QUATERNION_DESC file. In the descriptions below, one system defines the four components with indices of 0 through 3. The other system uses indices 1 through 4. The use of one or the other numbering system is not important, but the two schemes are shown here to be consistent with other documentation or SPICE code that the user may encounter. The first system defines components zero through three, with the 0th component as the scalar, and the 1st, 2nd and 3rd the vector components, where q0 = cos(a/2), q1 =-sin(a/2)*u1, q2 = -sin(a/2)*u2, q3 = -sin(a/2)*u3, where a is the angle (radians) representing the magnitude of the rotation, and u1, u2, u3 are components of the unit vector representing the axis of rotation. The order of the components in the QUATERNION keyword would be ( q0, q1, q2, q3 ) under this system. This is the structure employed in SPICE C-Kernels and Toolkit subroutines, and is therefore the PDS recommended structure. The SPICE Toolkit provides an assortment of routines that deal with quaternions. The second system defines components one through four, with the fourth component as the scalar, and the 1st, 2nd and 3rd as the vector components, where q1 = sin(a/2)*u1, q2 = sin(a/2)*u2, q3 = sin(a/2)*u3, q4 = cos(a/2), where a is the angle (radians) representing the magnitude of the rotation, and u1, u2, u3 are components of the vector representing the axis of rotation. The order of the components in the QUATERNION keyword will be ( q1, q2, q3, q4 ) under this system. This is the structure often found in spacecraft telemetry. The equations for forming a rotation matrix from the four quaternion elements as defined in this alternate scheme are: +- -+ | 2 2 | | 1 - 2 ( q2 + q3 ) 2 (q1 q2 + q4 q3) 2 (q1 q3 - q4 q2) | | | | | | 2 2 | ROT = | 2 (q1 q2 - q4 q3) 1 - 2 ( q1 + q3 ) 2 (q2 q3 + q4 q1) | | | | | | 2 2 | | 2 (q1 q3 + q4 q2) 2 (q2 q3 - q4 q1) 1 - 2 ( q1 + q2 ) | | | +- -+ The rotation matrix transforms coordinates as follows: if a vector v has coordinates ( x, y, z ) in some base reference frame (like J2000), then v has coordinates ( x', y', z' ) in instrument-fixed coordinates, where [ ] [ x ] [ x'] | ROT | | y | = | y'| [ ] [ z ] [ z'] (With ROT defined as shown above, this equation transforming a vector in the base frame to a vector in the target frame is the same as shown earlier for the SPICE-style quaternions. The name CMAT has been replaced with the name ROT to help emphasize that this second system is NOT what is used within SPICE.) -
attribute definition:
comment_id
The comment_id element is a unique key used to identify a particular set of user comments. -
attribute definition:
mro:stimulation_lamp_flag
The MRO:STIMULATION_LAMP_FLAG element is a set of three flags that identify which of the three HiRISE stimulation lamps have been turned on or off. Stimulation lamps are used to evaluate relative changes in instrument calibration throughout the mission. Stimulation lamps are always turned off for science observation data. -
attribute definition:
sequence_name
The SEQUENCE_NAME element provides the title assigned to a particular observation sequence during planning or data processing. This element replaces the older SEQUENCE_TITLE, which should no longer be used. -
attribute definition:
ch1:sc_orientation_epoch_tdb_time
The CH1:SC_ORIENTATION_EPOCH_TDB_TIME provides the T0 TDB time (dark side equator crossing time for this orbit). -
attribute definition:
sequence_table_id
The sequence_table_id element provides an unique identifier for the sequence table that was used for a set of observations. The sequence table provides the image acquistion sequences that specify the camera and filter image sequencing. It indicates the order in which cameras are shuttered and the order for which filters are used. -
attribute definition:
note
The note element is a text field which provides miscellaneous notes or comments (for example, concerning a given data set or a given data processing program). -
attribute definition:
lro:dlre_scalt_min
The LRO:DLRE_SCALT_MIN element gives the minimum recorded spacecraft altitude value (distance from surface of moon to spacecraft) in a DLRE RDR data product. -
attribute definition:
channels
The channels element provides the number of channels in a particular instrument, section of an instrument, or channel group. -
attribute definition:
mro:ikf_kernel_size_z
The MRO:IKF_KERNEL_SIZE_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 size of the kernel in the Z direction used in the Iterative Kernel Filter procedure. -
attribute definition:
msl:software_parameter_type
The MSL:SOFTWARE_PARAMETER_TYPE element specifies the value of a parameter type used as input to the primary generating software named in SOFTWARE_MODULE_NAME. For MSL, this keyword may be placed in a xxx_HISTORY_PARMS group, where 'xxx' is the task name. There may be multiple groups to accommodate multiple software tasks. Use of this keyword is optional. NOTE: The value of this keyword will be relevant to SOFTWARE_LANGUAGE. -
attribute definition:
journal_name
The journal_name element identifies, where applicable, the published work (e.g., journal or report) which contains a reference document. -
attribute definition:
spacecraft_solar_distance
The spacecraft_solar_distance element provides the distance from the spacecraft to the center of the sun. See also: solar_distance. -
attribute definition:
msl:n_shots
The MSL:N_SHOTS element specifies the commanded number of LIBS laser shots to perform. This is used in conjunction with N_SHOTS_2_IGNORE and N_SHOTS_2_AVG to determine the actual quantity and quality of LIBS spectra downlinked. -
attribute definition:
sequence_id
The SEQUENCE_ID element provides an identification of the spacecraft sequence associated with the given product. This element may replace the older SEQ_ID element.
Data Sets and Information