<?xml version="1.0" encoding="UTF-8"?>
<?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"
    xmlns:pds ="http://pds.nasa.gov/pds4/pds/v1" 
    xmlns:ctli="http://pds.nasa.gov/pds4/ctli/v1"
    xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation=
    "http://pds.nasa.gov/pds4/pds/v1  https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1D00.xsd">
    
    <Identification_Area>
        <logical_identifier>urn:nasa:pds:context:telescope:madrid.dss53_34m</logical_identifier>
        <version_id>1.0</version_id>
        <title>DSS-53 34-m Radio Telescope</title>
        <information_model_version>1.13.0.0</information_model_version>
        <product_class>Product_Context</product_class>
        
        <Modification_History>
            <Modification_Detail>
                <modification_date>2020-07-19</modification_date>
                <version_id>1.0</version_id>
                <description>
                    Original context file for the 34-m DSS-53 antenna near Madrid, Spain.
                </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>instrument_to_document</reference_type>
            <comment>
                This reference is to a PDS collection containing several versions of the NASA Deep 
                Space Network (DSN) Telecommunications Link Design Handbook (Document 810-005).
                The Handbook is maintained in a modular format to provide interface 
                design data to flight projects using the DSN.  Modules are updated as appropriate.
                Each member product in the PDS collection is the set of modules as they applied
                at that point in time.  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 Differrential One-way Ranging
                211 Wideband Very Long Baseline Interferometry
                214 Pseudonoise and Regenerative Ranging
                301 Coverage and Geometry
                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:context:facility:observatory.dsn</lid_reference>
            <reference_type>telescope_to_facility</reference_type>
            <comment>
                This context product provides more information on the NASA Deep Space Network as a whole.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:facility:observatory.madrid</lid_reference>
            <reference_type>telescope_to_facility</reference_type>
            <comment>
                This context product provides more information on the Madrid Deep Space Communications Complex.
            </comment>
        </Internal_Reference>
        
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:instrument:dsn.rss</lid_reference>
            <reference_type>telescope_to_instrument</reference_type>
            <comment>
                This context product provides more information on the commanding, radio tracking, and
                radio science instrumentation at the telescope.
            </comment>
        </Internal_Reference>
        
        <External_Reference>
            <reference_text>https://www.mdscc.nasa.gov/index.php/en/history/</reference_text>
            <description>
                An overview of the Madrid Deep Space Communications Complex with photographs.
                DSS-53 is scheduled to become operational in early 2021.
            </description>
        </External_Reference>
        
    </Reference_List>
    
    <Telescope>
        <aperture unit='m'>34</aperture>
        <telescope_longitude unit='deg'>355.746592</telescope_longitude>
        <telescope_latitude unit='deg'>40.427081</telescope_latitude>
        <telescope_altitude unit='m'>844.888</telescope_altitude>
        <coordinate_source>WGS 84 Ellipsoid</coordinate_source>
        <description>
            Deep Space Station 53 (DSS-53) is scheduled to become operational in early 2021.
            The antenna is very similar in structure to earlier 34-m DSN antennas; however the 
            transmission and reception equipment is located underground rather than in a cone at 
            the focal point of the dish. The radio signal is guided from the subreflector through 
            a hole in the surface of the dish to the receiving equipment via a system of reflecting
            mirrors inside a large tube. The reverse path allows transmission. This 'beam waveguide' 
            (BWG) design reduces weight on the reflecting surface, insulates electronics from 
            environmental factors including dish movement, and simplifies maintenance. DSS-53 can 
            transmit up to 20 kW at 7.1 GHz.  It can receive simultaneous right- and left-circular
            polarization at 8.4 GHz and 32.0 GHz. Antenna coordinates were converted from Table 5
            in module 301 (revision L) of the DSN Telecommunications Link Design Handbook 
            (DSN document 810-005). 
            
            The Madrid Deep Space Communications Complex (MDSCC) has been managed since December 2012 by
            Ingeniería de Sistemas para la Defensa de España.  MDSCC is located about 65 km west of
            Madrid, near the town of Robledo de Chevala, Spain.
        </description>
    </Telescope>
    
</Product_Context>
