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Anything else >> General and other topics >> How fast can you communicate London to New York. https://www.satsig.net/cgi-bin/yabb/YaBB.pl?num=1568914867 Message started by Eric Johnston on Sep 19th, 2019 at 6:41pm |
Title: How fast can you communicate London to New York. Post by Eric Johnston on Sep 19th, 2019 at 6:41pm
I found a reference to Hibernia Express, a new transatlantic cable, able to reduce the transit time to under 60ms for the distance London-New York of 5572km. This was to gain financial advantage in trading, supposedly worth £63 million per year per mS.
I appreciate that GEO orbits path lengths have long ruled out GEO satellite as a competitor but I was wondering about using a constellation of interlinked LEO satellites with 47 deg inclination at a height of say 300km, with a couple of O3b type VSATs on an office block at each end. I was hoping that allowing say 600km (2mS) for the slant paths for the first and last satellite, plus 6 lots of 1000km for the intermediate links (8 x 3.3mS). Making total of 9200 km or 31 mS. Can anyone check the orbit idea and the maths and say if it shows any promise, please ? I have tried to invent a constellation, possibly 36 orbit planes with 16 satellites in each plane. Any ideas as to how many satellites are needed to keep about 8 or 9 of them in an approximate line with mutual visibility across the north atlantic ? Best regards, Eric. |
Title: Re: How fast can you communicate London to New York. Post by Admin1 on Mar 1st, 2020 at 2:25pm
Can the Star Link constellation provide connectivity between London and New York along an approximately great circle line to minimise the total path length delay ?
I've drawn an orange path - a bit of a zig-zag. Image credit and more relevent ideas: https://www.nextbigfuture.com/2018/11/spacex-low-latency-starlink-satellite-network-will-be-massively-profitable.html It strikes me as a way to make a profit from fast communications. |
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