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sebsebmc / starlink-coverage

Calculating some statistics about Starlink satellites
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Minimum Earth Station Elevation #12

Open RedLineTrain opened 4 years ago

RedLineTrain commented 4 years ago

As you note in README.md, the minimum elevation angle on the initial 1,584-satellite shell has been approved by the FCC at 25%, moving to 40% once the entire 4,409-satellite system is built out. See https://licensing.fcc.gov/myibfs/download.do?attachment_key=1877671. This modification (SAT-MOD-20190830-00087) was approved on December 19, 2019.

On April 17, 2020, SpaceX applied for a number of changes (SAT-MOD-20200417-00037), including asking for minimum elevation angles down to 25% on most of the constellation, but down to 5% on the high inclination portions. This application has not yet been approved by the FCC. See https://licensing.fcc.gov/myibfs/download.do?attachment_key=2274316.

As far as I know, the V-band constellation minimum elevation angle has not been changed.

The 30k-satellite additional constellation application (SAT-LOA-20200526-00055) also is asking for minimum elevation angles down to 25% on most of the constellation, but down to 5% on the high inclination portions . See https://licensing.fcc.gov/myibfs/download.do?attachment_key=2378671.

Thanks for this very nice visualization!

sebsebmc commented 4 years ago

Thanks for the links! I'll take a look at these this week and see how I can incorporate it into the simulation.

sebsebmc commented 4 years ago

I now have added a 25 degree data set but nothing that changes minimum elevation at higher altitudes.