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<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1D00.sch" 
    schematypens="http://purl.oclc.org/dsdl/schematron"?>

<Product_Context xmlns="http://pds.nasa.gov/pds4/pds/v1"
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    <Identification_Area>
        <logical_identifier>urn:nasa:pds:context:facility:observatory.dsn</logical_identifier>
        <version_id>1.1</version_id>
        <title>NASA Deep Space Network</title>
        <information_model_version>1.13.0.0</information_model_version>
        <product_class>Product_Context</product_class>
        <Modification_History>
            <Modification_Detail>
                <modification_date>2020-07-30</modification_date>
                <version_id>1.1</version_id>
                <description>
                   Revised and generalized facility/observatory context product for the NASA Deep Space 
                   Network.  Includes internal references to separate facility/observatory context products
                   for the Canberra, Goldstone, and Madrid Deep Space Communications Complexes.
                </description>
            </Modification_Detail>
            <Modification_Detail>
                <modification_date>2017-06-01</modification_date>
                <version_id>1.0</version_id>
                <description>
                    Initial version created for use with InSight mission
                </description>
            </Modification_Detail>
        </Modification_History>
    </Identification_Area>
    
    <Reference_List>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:radiosci.documentation:dsn.810-005</lid_reference>
            <reference_type>context_to_associate</reference_type>
            <comment>
                DSN document 810-005 is the Telecommunication Link Design Handbook for the
                NASA Deep Space Network.  It contains design data for flight projects using the
                NASA DSN. The document is modular, and modules are updated as appropriate.  
                This reference is to a PDS4 collection; products within the collection are 
                versions of the Handbook, released at various times.  Modules include:
                   001 Handbook Introduction
                   101 70-m Subnet Telecommunications Interfaces
                   102 26-m Subnet Telecommunications Interfaces (omitted in 2009 and later versions)
                   103 34-m HEF Subnet Telecommunications Interfaces
                   104 34-m BWG Antennas Telecommunications Interfaces
                   105 Atmospheric and Environmental Effects
                   106 Solar Corona and Solar Wind Effects
                   107 Radio Source Catalog
                   201 Frequency and Channel Assignments
                   202 34-m and 70-m Doppler
                   203 Sequential Ranging
                   205 Command Service
                   206 Telemetry General Information
                   207 34-m and 70-m Telemetry Reception
                   208 Telemetry Data Decoding
                   209 Open-Loop Radio Science
                   210 Delta Differential One-way Ranging
                   211 Wideband Very Long Baseline Interferometry
                   214 Pseudonoise and Regenerative Ranging
                   301 Coverage and Geometry (includes antenna coordinates)
                   302 Antenna Positioning
                   303 Media Calibration
                   304 Frequency and Timing
                   305 Test Support
                   901 Handbook Glossary
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:radiosci.documentation:dsn.820-100</lid_reference>
            <reference_type>context_to_associate</reference_type>
            <comment>
                An overview of the capabilities available from the Deep Space Network to support flight 
                projects and experiment investigations. The capabilities described are focused on deep 
                space missions, near-Earth missions above Geosynchronous Earth Orbit (GEO), 
                and ground-based observational science.  Included are tables summarizing uplink
                commanding, downlink telemetry, radio frequency, and ground communication capabilities
                as well as pricing information for mission support. The document is aimed at mission 
                designers working at the proposal stage; it is updated as appropriate.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:facility:observatory.canberra</lid_reference>
            <reference_type>context_to_associate</reference_type>
            <comment>
                This context product provides more information on the Canberra Deep Space
                Communication Complex as an observatory in its own right.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:facility:observatory.goldstone</lid_reference>
            <reference_type>context_to_associate</reference_type>
            <comment>
                This context product provides more information on the Goldstone Deep Space
                Communication Complex as an observatory in its own right.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:facility:observatory.madrid</lid_reference>
            <reference_type>context_to_associate</reference_type>
            <comment>
                This context product provides more information on the Madrid Deep Space
                Communication Complex as an observatory in its own right.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss11_26m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 26-m DSS-11 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss12_26m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 26-m DSS-12 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss12_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-12 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss13_26m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 26-m DSS-13 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss13_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-13 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss14_64m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 64-m DSS-14 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss14_70m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 70-m DSS-14 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss15_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-15 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss16_26m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 26-m DSS-16 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss23_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-23 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss24_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-24 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss25_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-25 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss26_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-26 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss27_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-27 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:goldstone.dss28_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-28 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:canberra.dss33_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-33 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:canberra.dss34_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-34 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:canberra.dss35_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-35 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:canberra.dss36_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-36 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:canberra.dss42_26m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 26-m DSS-42 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:canberra.dss42_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-42 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:canberra.dss43_64m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 64-m DSS-43 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:canberra.dss43_70m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 70-m DSS-43 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:canberra.dss45_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-45 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:canberra.dss46_26m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 26-m DSS-46 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:madrid.dss53_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-53 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:madrid.dss54_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-54 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:madrid.dss55_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-55 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:madrid.dss56_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-56 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:madrid.dss61_26m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 26-m DSS-61 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:madrid.dss61_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 34-m DSS-61 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:madrid.dss63_64m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 64-m DSS-63 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:madrid.dss63_70m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 70-m DSS-63 antenna.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:madrid.dss65_34m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the DSS-65 antenna before it was relocated in 2005.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:madrid.dss65_34m-post2005</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the DSS-65 antenna after it was relocated in 2005.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:telescope:madrid.dss66_26m</lid_reference>
            <reference_type>facility_to_telescope</reference_type>
            <comment>
                This context product provides more information on the 26-m DSS-66 antenna.
            </comment>
        </Internal_Reference>
        
        <External_Reference>
            <reference_text>
                Basics of Space Flight.
                Section 3: Operations, Chapter 18: Deep Space Network.
                https://solarsystem.nasa.gov/basics/chapter18-1
            </reference_text>
            <description>
                A set of very readable web pages connected by hyperlinks that describes the mission
                of the NASA Deep Space Network and the roles of its many components.
            </description>
        </External_Reference>
      
    </Reference_List>
    
    <Facility>
        <name>Deep Space Network</name>
        <type>Observatory</type>
        <description>
            NOTE: Investigations like radio science that treat the DSN as one entity use this.
            Else, investigations that distinguish Canberra, Goldstone, and Madrid should use
              urn:nasa:pds:context:facility:observatory.canberra
              urn:nasa:pds:context:facility:observatory.goldstone
              urn:nasa:pds:context:facility:observatory.madrid

            The NASA Deep Space Network (DSN) comprises three Deep Space Communications Complexes (DSCCs)
            spaced by approximately 120 degrees in longitude and within about 40 degrees latitude
            of Earth's equator. As the Earth rotates, this configuration provides nearly continuous 
            coverage of spacecraft in the ecliptic -- that is, spacecraft flying to or orbiting most 
            solar system objects.
            
            The Goldstone Deep Space Communications Complex (GDSCC) is near Barstow, California (USA);
            it is managed by the Jet Propulsion Laboratory (JPL) in Pasadena, CA.  The Canberra Deep 
            Space Communications Complex (CDSCC) is in Tidbinbilla, ACT (Australia), near Canberra; 
            it is managed by the Commonwealth Scientific and Industrial Research Organisation.  The 
            Madrid Deep Space Communication Complex (MDSCC) is in Robledo de Chevala, near Madrid,
            Spain; it is operated by Instituto Nacional de Técnica Aeroespacial.  
            
            Each DSCC includes several Deep Space Stations (DSSs, or antennas), a Signal Processing 
            Center (SPC), and administrative and support facilities.  Each DSCC handles several types 
            of data including: frequency and timing, tracking, telemetry, command, monitor, radio science, 
            and very long baseline interferometry. These data types support uplink (to spacecraft) or 
            downlink (from spacecraft) operations or passive reception.
            
            Data received from spacecraft are relayed via the local SPC to the Network Operations Control
            Center (NOCC) at JPL in Pasadena, where they are distributed to the offices responsible for 
            each spacecraft.  Commands, generated in those offices, are sent via the NOCC, SPC, and
            DSS to the spacecraft.
            
            The antennas are divided according to aperture size into subnets.  DSS 14 became operational
            in 1964 so that it could support the Mariner 4 flyby of Mars; it and the other two 64-m 
            antennas were upgraded to 70-m in the 1980s to support the Voyager 2 flyby of Neptune.
            Its other capabilities have evolved over time.  The smaller antennas have become
            operational at various times, and their capabilities have also evolved; some antennas are
            no longer in service.  Readers interested in specifics should consult documentation
            appropriate to the time of interest (for example, the 810-005 Design Handbook).  The
            following list provides only a snapshot of capabilities over time:
            
            70-m subnet (upgraded from 64-m to 70-m in 1982-1988):
              DSS 14 (GDSCC) S/X-band transmit/receive RCP/LCP; L-band receive LCP only (1964-present)
              DSS 43 (CDSCC) S/X-band transmit/receive RCP/LCP; L-band receive LCP only (1972-present)
              DSS 63 (MDSCC) S/X-band transmit/receive RCP/LCP (1974-present)
            
            34-m standard (STD) subnet (upgraded from original 26-m apertures):
              DSS 12 (GDSCC) built in 1959, converted to educational use in 1996, decommissioned in 2008
              DSS 42 (CDSCC) first antenna at CDSCC; extended from 26-m to 34-m in 1980s (1964-2000)
              DSS 61 (MDSCC) decommissioned 1999, transferred to the PARTNeR Project (educational) in 2001
            
            34-m High-Efficiency (HEF) subnet, brought on-line as 34-m STD antennas:
              DSS 15 (GDSCC) S/X-band transmit/receive RCP or LCP (decommissioned in May 2018)
              DSS 45 (CDSCC) S/X-band transmit/receive RCP or LCP (1986 to October 2016)
              DSS 65 (MDSCC) S/X-band transmit/receive RCP or LCP (1987; expected decommission in 2021)
            
            34-m Beam Waveguide (BWG) subnet (these antennas support X-band transmit/receive and some
            combination of S- and/or Ka-band operation; HSB is a high-speed BWG for rapidly moving targets):
              DSS 23 (GDSCC) (X/Ka) (planned for operational use starting October 2024)
              DSS 24 (GDSCC) (S/X) (approximately 1994 to present)
              DSS 25 (GDSCC) (X/Ka-band) (approximately 1996 to present)
              DSS 26 (GDSCC) (S/X/Ka) (approximately 1998 to present)
              DSS 27 (GDSCC) (HSB, S-band) (approximately 1994 until decommissioned in the mid 2010s)
              DSS 28 (GDSCC) (HSB, S/X) (from approximately 1994; converted to educational use in 2008)
              DSS 33 (CDSCC) (X/Ka) (planned to be operational in October 2026)
              DSS 34 (CDSCC) (S/X/Ka) (1997-present)
              DSS 35 (CDSCC) (X/Ka) (2014-present)
              DSS 36 (CDSCC) (S/X/Ka) (2016-present)
              DSS 53 (MDSCC) (X/Ka) (under construction with completion expected in June 2021)
              DSS 54 (MDSCC) (S/X/Ka) (operational since at least 2000 to present)
              DSS 55 (MDSCC) (X/Ka) (operational after 2000 to present)
              DSS 56 (MDSCC) (S/X/Ka) (under construction with completion expected in October 2020)
            
            26-m subnet (for tracking near-Earth spacecraft prior to 2000 through present):
              DSS 16 (GDSCC) S-band up/down; some X-band capabilities
              DSS 46 (CDSCC) S-band up/down (1966-2009)
              DSS 66 (MDSCC) S-band up/down (1983-September 2008)
              
            Other antennas:
              DSS 11 (GDSCC, 26-m) The first antenna in what would become the DSN (1958-1981)
              DSS 13 (GDSCC, 34-m) Research and development (1962-present, BWG replaced original 26-m in 1991)

            DSS 14 is part of the Goldstone Solar System Radar, a fully steerable radar capable of 
            operating in both monostatic and bistatic modes (with cooperating second antennas) for the
            study of solar system objects.
            
            Each complex includes instrumentation which collects meteorological, tropospheric, and ionospheric 
            data used to calibrate radiometric measurements at the DSCC.  
            
        </description>
    </Facility>
</Product_Context>
