International Bureau Asking, Receiving Supplemental NGSO Answers
Satellite operators with non-geostationary orbit (NGSO) constellation applications before the FCC are starting to provide additional technical details to the International Bureau. The bureau in a series of letters in March to some operators requested supplemental constellation information on such…
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issues as mitigation of orbital debris. ViaSat in a letter Tuesday provided more details about its post-mission disposal plans, giving more technical details about its plans to put its satellites into storage orbit at 8,500 kilometers. Boeing's letter elaborated on its plans for keeping apogee, perigee, inclination and argument of perigee values during the satellites' lifetimes, and more details on its intent to comply with application equivalent power flux density limits. The bureau, meanwhile, gave the company a May 10 deadline for providing a variety of supplemental information about its V-band constellation, including its design and operational strategies for mitigating orbital debris and an analysis of collision risk, in a letter Tuesday to Boeing. Karousel's letter Tuesday cited waivers it foresees needing in the 29.1-29.25 GHz and 29.25-29.5 GHz bands for its NGSO constellation since there's no NGSO designation in the bands, and how it will prevent interference with Iridium operations in the 29.1-29.3 GHz bands. The bureau this week also extended LeoSat's deadline to May 15 for it to give more information about the status of the French licensing authority's review of the orbital debris mitigation plans of LeoSat's constellation and an analysis of collision risk during the passive disposal phase. Boeing separately emailed us that its NGSO plans are "in full accordance with FCC requirements and precedent" -- in response to allegations by ViaSat that pending V- and Ka-band constellation applications from Boeing, SpaceX and O3b don't meet FCC requirements (see 1704110028).