The mission dictionary for NEAR to support the PDS3 to 4 migration.
NEAR mission related
properties
Observation related properties
This section contains the simpleTypes that provide more constraints
than those at the base data type level. The simpleTypes defined here build on the base data
types. This is another component of the common dictionary and therefore falls within the
common namespace.
The INSTRUMENT_TEMPERATURE element provides the
temperature, in degrees Celsius, of an instrument or some part
of an instrument.
The inst_cmprs_quantz_tbl_id element identifies
the reference table used for quantization in the frequency
domain for on-board transform compression. This name or code
should be specific enough to allow the user of the data to have
sufficient information to reference the quantization table used
to compress the data.
The instrument_mode element provides the name of
the mode the grs instrument was operating in at the time of the
observation.
The sequence_table_id element provides an unique
identified 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.
The sequence_title element provides the title
assigned to a particular observation sequence during planning or
data processing.
MET of image acquisition in seconds. MET
corresponds to the last spacecraft 1-Hz pulse before the end of
image integration, i.e., 918 ms before the end of image
integration. See Murchie et al. (1998) [MURCHIEETAL1998] for a
detailed explanation of timing of the 1 Hz pulse relative to
image exposure.
MET of image acquisition in seconds. MET
corresponds to the last spacecraft 1-Hz pulse before the end of
image integration, i.e., 918 ms before the end of image
integration. See Murchie et al. (1998) [MURCHIEETAL1998] for a
detailed explanation of timing of the 1 Hz pulse relative to
image exposure.