NASA VIASAT ku band Coordination Agreement

0450-EX-CN-2017 Post Grant Documents

Leidos, Inc.

2017-10-16ELS_199739

Coordination Agreement Between the National Aeronautics and Space Administration ("NASA") and VIASAT, Incorporated (VIASAT) for Operation of the VIASAT Arclight® AMSS Terminals in the 14.0 — 14.5 GHz—Band VIASAT seeks to operate aeronautical mobile—satellite service (AMSS) stations over the United States and Possessions (US&KP) in the 14.0 — 14.5 GHz band. The AMSS stations are part of the ViaSat Arclight® communications system earth stations aboard aircraft (ESAA) using transponders in the geostationary satellite orbit (GSO) arc. This Coordination Agreement has been prepared in compliance with the rules of the Federal Communications Commission (FCC) and the recommendations of the International Telecommunication Union (ITU). 1 Overview 1.1 Within the US&P, the 14.0 — 14.5 GHz—band is currently allocated to the fixed—satellite service, including the use by earth stations aboard aircraft (ESAA), on a primary basis. FCC requires all ESAA using this band to protect Space Research Services (SRS) earth stations and the Tracking and Data Relay Satellite System (TDRSS) that operate and require protection in this band, 1.2 ViaSat, Inc. holds a license authorization to operate ESAA units in the 14.0 — 14.5 GHz— band. 1.3 The ViaSat Arclight® ESAAs receive from, and transmit to, GSO satellite transponders under control of a Ground Earth Station (GES) and Network Operations Center (NOC). They, and the terrestrial network to which they are connected, comprise the VIASAT system. 1.4 This Coordination Agreement has been prepared to ensure that operation of the ViaSat Arclight® ESAAs conform to FCC requirements for protection of the NASA SRS Network. 1.5 ViaSat, Inc. has the authority to negotiate and sign this Coordination Agreement for its Arclight® AMSS system and NASA has the authority to negotiate and sign this agreement for the TDRSS and SRS Network sites listed in Section 3.1. 2 AUTHORITY 2.1 NASA concludes this agreement pursuant to 42 USC §2473(c)(5) and (6) and section 203(5) of the National Aeronautics and Space Act of 1958 as amended, in addition to the Manual of Regulations and Procedures for Federal Radio Frequency Management (National Telecommunications & Information Administration Redbook), May 2013 Edition. NASA Coordination Agreement 1 of 6

3 Space Research Service Earth Stations 3.1 Table 1 provides a list of TDRSS earth station sites requiring interference protection. The TDRSS satellite orbital locations supported by each earth station site are also shown. Earth Station Site Latitude Longitude TD&iiiStsgeel.me _ degrees degrees Degrees East Continental United States —174 —171 ~167.5 White Sands, New Mexico —~150 Antenna Size — 18.3 meter 32.5434N 106.6121W «79 Antenna Gain —66.4 dBi —62 Elevation — 1456 m ~49 —46 ~41 Continental United States —~12 Blossom Point, MD —41 Antenna Size — 20 meter 38.4289N 77.0839W 46 Antenna Gain — 67.2 dBi —49 Elevation — 5 m —62 United States Territory 85 Guam 89 Antenna Size ~ 11 meter 14.588 1N 144.$410E —~174 Antenna Gain — 61.9 dBi —171 Elevation — 129 m 1165705 Table 1 TDRSS Earth Station Sites 3.2 New TDRSS Earth Station Sites: NASA may unilaterally add additional TDRSS earth station sites to the list in Table 1 above, NASA will notify NTIA/FCC when it knows that a new earth station is being planned and has the coordinates of the newly planned site and public notice(s) will be issued by the FCC. as appropriate. NASA Coordination Agreement 2 of 6

3.3 Earth Site Protection Limits: 3.3.1 The TDRSS protection limits are listed in Table 2 below for the WSC, Guam and BP sites. Frequency Band Interference Threshold Limit Reference Percentage Measured at Antenna Qutput of Time 13.40 —14.00 GHz —176 dBW/kHz Never to be Exceeded 14,00—14.05 GHz —146 dBW/MHz Never to be Exceeded 14.05 — 14.20 GHz —100 dBW (WSC/Guam); Never to be Exceeded —85 dBW (BP) Table 2. TDRSS Protection Limits 3.3.2 For interference calculations, the TDRSS spacecraft can have an inclination angle up to 15 degrees. In calculating the interference threshold levels in Table 2, the antenna patterns in Figure 1 below should be used. 80.00 q <——~ winhss onwrmmmmmmcnes en * fnseati 70.00 60.00 [ ‘I R 50.00 | %40.00 ——WSC "€30.00 ——BP W § 20.00 cssc G 2N & €10.00 4 0.00 —10.00 fncummmnsed ~20.00 0.01 0.10 1.00 10.00 100.00 Antenna off—axis angle (degrees) Figure 1. TDRSS Earth Station Antenna Gain Patterns Note: The antennaoff—axis patterns shown for WSC and Guam in Figure 1 are calculated using Annex III of Appendix 8 of the ITU Radio Regulations, with the following modifications: G= 5+ 15log(D/X) q. =12.02 (D/ 1y NASA Coordination Agreement 3 of 6

where Gmax and D are given in Table 1. The antenna sidelobe pattern for BP is improved by 3 dB compared to that of WSC and Guam. 4 Operational Coordination Agreement 4.1 —NASA and VIASAT agree to the following: 4.1.1 The purpose of this Coordination Agreement is to provide protection to the TDRSS earth station sites listed in Table 1 and any future TDRSS earth station sites. 4.1.2 The level of protection afforded to the earth stations in Table 1, and any future TDRSS earth station sites which NASA adds to Table 1 pursuant to Section 3.2.2 of this Agreement, shall be equal to or greater than the Interference Threshold Limits shown in Table 2. 4.2 This Coordination Agreement may be reviewed periodically by the signatories to the agreement following commencement of service by VIASAT under an operational license from the FCC. The purpose of the review is to assess the effectiveness of this agreement and update this, or subordinate operational agreements, as appropriate. 4.3 Each party shall inform the other party in a timely manner of changes in the points of contact as defined in Section 7. 4.4 VIASAT agrees to: 4.4.1 Monitor, control and cease transmissions from any ESAA that would exceed the thresholds given in Table 2 within radio line—of—sight of the sites listed in Table 1. 4.4.2 Monitor, control and cease transmissions from any ESAA that would exceed the thresholds given in the Table 2 within radio line—of—sight of such additional sites as NASA may require. 4.4.3 Respond expeditiously to a NASA request for protection of the sites listed in Section 3.1, in accordance with the threshold limits of Section 3.3. 4.4.4 Respond expeditiously to a NASA request to isolate a source of interference to a TDRSS earth station suspected to be from an ESAA. 4.4.5 Provide a central point of contact accessible and available (on a 24 hour, 7 day basis) for interference resolution and other contact. 4.5 NASA agrees to: 4.5.1 Maintain an open dialog with VIASAT concerning any perceived breach of interference thresholds that may be attributable to an ESAA that is not in compliance with this Coordination Agreement. NASA Coordination Agreement 4 of 6

4.5.2 Provide timely notification to VIASAT of changes or additions to TDRSS earth station sites, TDRSS spacecraft orbital positions or interference thresholds listed in this Coordination Agreement. 5 Financial Obligations 5.1: Each party shall be responsible for funding its own responsibilities under this Agreement. No provision of this Agreement shall be interpreted to require obligation of funds in violation of the Anti—Deficiency Act 31 U.S.C § 1341. 6 Assignment and Termination 6.1 This Coordination Agreement shall be binding upon the parties hereto and their respective successors and assigns. 6.2 This Coordination Agreement may be terminated by either party upon 6 months written notice to the other. 5.3 CONTINUING OBLIGATIONS: The obligation of VIASAT to protect the NASA TDRSS earth stations from interference as described in this agreement will survive termination or expiration ofthis Agreement. 7 Points of Contact 7.1 Points of contact concerning issues of a policy nature concerning this Coordination Agreement, or the designation of future technical contacts for updating or revising this Agreement: Name:; Victor Sparrow Name: Dary! T. Hunter, P.E. Title: Director NASA Spectrum Policy Title: Senior Director, Regulatory Affairs Organization: NASA Organization: : ViaSat, Inc. Address: NASA Headquarters Address: 6155 El Camino Real 300 E Street SW Carlsbad, CA 92009 Washington D.C. 20546—0001 Telephone: (202) 358—068 1 Telephone: (760) 476—2583 e—mail: Victor.D.Sparrow@nasa.gov e—mail: daryl.hunter@viasat.com 7.2 Points of contact for technical issues or questions related to this Coordination Agreement: Name: Vincent Scott Galbraith Name: Daryl T. Hunter, P.E. Title: Goddard Spectrum Manager Title: Senior Director, Regulatory Affairs Organization: NASA Organization: ViaSat, Inc. Address: Goddard Space Flight Center Address: 6155 El Camino Real Exploration and Space Communications Office Carlsbad, CA 92009 NASA Coordination Agreement 5 of 6

Greenbelt, MD 20771 Telephone: (301) 286—5089 Telephone: (760) 476—2583 Facsimile: (301) 286—1769 Facsimile: (760) 929—3941 e—mail: vincent.s.galbraith@nasa.gov e—mail: daryl.hunter@viasat.com 8 Signatures This Coordination Agreement is being made in good faith by both parties and is effective on the date on of final signature, For: The National Aeronautics and Space For: ViaSat, Inc. Administration: | ILLLDb vra on f By: 2 c’(/bflz W/{{Q{ By: AQ[J/\/‘;(ZSZ /(:/v!_:?‘(‘/‘flx Name: Victor Sparrow/ Name: Daryl ]{ Hunter, P.E. Title: Director, Spectrum Plans and Policy Title: Senior Director, Regulétory Affairs Date: /5/ Ma;}/ 20/7 Date: /; /L/\ 7 LJ_’ 7 0 /7 NASA Coordination Agreement 6 of 6


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Document Modified: 0001-01-01 00:00:00
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