Attachment NIMIQ-2 Support

This document pretains to SES-STA-20160328-00300 for Special Temporal Authority on a Satellite Earth Station filing.

IBFS_SESSTA2016032800300_1131596

Drift support of NIMIQ-2 from USN’s Hawaii ground station NIMIQ-2 is a Telesat Canada communications satellite being drifted from 66° East to 148° East. USN has been contracted to support the NIMIQ-2 spacecraft geo spacecraft for a period of up to 90 days as it is drifted to its new orbital position and then a subsequent test period before it becomes operational in its new slot. The Hawaii ground station will have visibility of the spacecraft as it approaches 127° East on its way to 148° East over the western Pacific ocean. Hawaii will be called on to support several hours to days at a time during the drift and orbital checkout. Support will be receive only. Downlink Uplink NIMIQ-2 12202.500 MHz NA NIMIQ-2 12695.000 MHz NA Flux Density impinging on the ground in Hawaii from NIMIQ-2 The Flux density is calculated as: 𝑭𝑭𝑭𝑭𝑭𝑭𝑭𝑭 𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅 = 𝑬𝑬𝑬𝑬𝑬𝑬𝑬𝑬 ÷ (𝟒𝟒 𝝅𝝅 𝑹𝑹𝑹𝑹𝑹𝑹𝟐𝟐 ) Where 𝑹𝑹𝑹𝑹𝑹𝑹 is the distance from spacecraft to the ground? Where 𝑬𝑬𝑬𝑬𝑬𝑬𝑬𝑬 is the Effective Isotropic Radiated Power of the spacecraft? Data from the spacecraft owner indicates that the nominal EIRP for the spacecraft is +8.20 dBW. Being a near circular orbit geo orbit the altitude (and thus the closest distance to earth during an overhead pass) is = 35,800 Km. Converting +8.20 dBW to scalar watts = 6.606 watts transmitted at 12202.5 MHz Therefor: 𝟐𝟐 𝑭𝑭𝑭𝑭𝑭𝑭𝑭𝑭 𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅𝒅 = 𝟔𝟔. 𝟔𝟔𝟔𝟔𝟔𝟔 ÷ (𝟒𝟒 𝝅𝝅 ∗ 𝟑𝟑𝟑𝟑, 𝟖𝟖𝟖𝟖𝟖𝟖, 𝟎𝟎𝟎𝟎𝟎𝟎 𝒎𝒎𝒎𝒎𝒎𝒎𝒎𝒎𝒎𝒎𝒎𝒎 ) Flux density = 4.102 x 10-16 Watts/meter2 Or Flux density = 4.102 x 10-17 mW/cm2 1 of 1


Document Created: 2016-03-28 16:07:19
Document Modified: 2016-03-28 16:07:19
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