This XML schema file has been generated from the Information Model.
The Command_Execution_Information class contains
information about how the command that acquired this data was
executed, such as sequence or activity.
The Surface_Mission_Parameters class contains
attributes specific to surface missions which apply across
instrument types.
The Telemetry_Information class contains
downlink-related attributes used primarily during mission
operations.
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 application_id (often abbreviated APID)
attribute identifies the process, or source, which created the
data. This can include information such as an identification of
the instrument which generated the telemetry stream, its
operating mode at the time of data acquisition, and any onboard
compression of the data.
The application_name attribute provides the name
associated with the source or process which created the
data.
The application_subtype_id attribute provides
further distinction (i.e., greater specificity) among
application_id types.
The command_sequence_number attribute provides a
numeric identifier for a sequence of commands sent to a
spacecraft or instrument.
The command_source_id attribute specifies the
flight software element that was the source of a particular
command.
Identifies the communication session used to
acquire this data.
The data_size specifies number of bytes in the
compressed data stream, not including headers.
The download_priority attribute specifies which
data to downlink/transmit, based on order of importance. The
lower numerical priority (higher-ranked number) data products
are transmitted before higher numerical priority (lower-ranked
number) data products. For example, an image with a downlink
priority of 1 will be transmitted before an image with a
downlink priority of 6. Value of 0 specifies use of on-board
default.
The earth_received_start_date_time attribute
provides the earliest time at which any component telemetry data
for a particular product was received.
The earth_received_stop_date_time attribute
provides the latest time at which any component telemetry data
for a particular product was received.
The expected_packets attribute provides the
total number of telemetry packets which constitute a complete
data product, i.e., a data product without missing
data.
The flight_software_version_id attribute
identifies the version of the instrument flight software used to
acquire the image.
The observation_id specifies a unique identifier
for a scientific observation within a data
set.
The product_completion_status attribute
indicates whether or not a product is complete or is in one of a
number of incomplete states. Sample values might indicate that
all portions of the product have been downlinked and received
correctly, that all portions have not yet been received, or that
the product contains transmission errors. The specific values
are mission-dependent.
The provider_id attribute identifies the
organization or subsystem that supplied the telemetry data
product to the producer of the raw (EDR) PDS data product. This
is typically (but not always) the organization responsible for
reassembling packetized data into a single product. These may
vary by mission so the permissible values should be set by the
mission dictionaries.
The received_packets attribute provides the
total number of telemetry packets actually used to construct
this data product. cf. expected_packets.
The request_id is used to group related datasets
together by science or engineering application or theme, such as
frames in a mosaic.
The sequence_execution_count specifies how many
times this sequence has executed since the last reset of the
flight computer.
The sequence_id identifies the command sequence
used to acquire this product.
The sequence_version_id identifies which of
potentially several versions of a sequence_id were used to
acquire this product.
The surface_gravity attribute specifies the
acceleration of gravity (magnitude, not
direction).
The telemetry_source_name specifies the name
source of the telemetry data described in the parent
class.
The telemetry_source_sclk_start attribute
specifies the value of the spacecraft clock (in seconds) at the
creation time of the source product from which this product was
derived.
The telemetry_source_start_time specifies the
creation time of the source product from which this product was
derived. It is the same as the telemetry_source_sclk_start
converted to Spacecraft Event Time (SCET).
The transport_protocol attribute specifies the
protocol used in the creation of the telemetry data products by
the subsystem which generates the telemetry stream.
[
{
"dataDictionary": {
"Title": "PDS4 Data Dictionary" ,
"Version": "1.10.1.0" ,
"Date": "Mon Jul 30 16:09:00 PDT 2018" ,
"Description": "This document is a dump of the contents of the PDS4 Data Dictionary" ,
"PropertyMapDictionary": [
]
}
}
]