Stephen Braham

Quantum Cosmologist turned Arctic-going IT-exploring Rocket Scientist, plays guitars and synths sometimes. Work on mission-crit networks in spaceflight and public safety.

Stephen Brahamwarp@noc.social
2025-03-12

In principle, for the first time, the type of long-range ODFM/OFDMA planetary exploration wireless network that #SFU has been advocating and supporting at NASA and CSA, in collaboration with CU Boulder and Mars Institute and SETI Institute, since the late 1990s was transmitted by #Nokia Bell Labs on the lunar surface last week. But it couldn't be tested end-to-end. Slowly, though, space wireless is progressing (especially via #CCSDS standards):

nokia.com/about-us/news/releas #LTE #3GPP

Stephen Brahamwarp@noc.social
2025-03-07

Pity, we won't see a rover and hopper test #lunar #LTE this time. #IM2 mission ended, while sitting in a shadow looking at Earth from the easiest place to land in the hard lunar south pole:

intuitivemachines.com/im-2?que

Stephen Brahamwarp@noc.social
2025-03-06

LTE gear, linked to our work at #SFU with #NASA since late 90s, should arrive on the Moon in less than an hour: youtube.com/live/VOPL8nhmQU4?s #Space #3GPP

Stephen Brahamwarp@noc.social
2025-03-02

Landed! Three contact sensors out of 4, data returned still! First 100% successful #NASA #CLPS landing!!!! #blueghost #Firefly

Stephen Brahamwarp@noc.social
2025-02-27

Awesome colleague and co-author in NASA #wireless networking activities, Bernie, on what is on way to #lunar surface:

youtu.be/rdxe6bFdi5s?si=uv5_wW #Space

Stephen Brahamwarp@noc.social
2025-02-26

Phew, had to run out for a few minutes to pick up some peanuts. You don't want an exploration launch with no peanuts. Bad luck! And, given we've pushed/tested for these comms to be launched to moon and Mars for the last 27 years, not going to risk it! #IM2 #LunarComms #LTE #3GPP

Stephen Brahamwarp@noc.social
2025-02-08

With what looks like the third failure of a Falcon 9 S2 in six months, may be reaching the production limit of S2s/max flight rate of F9s. Which is interesting, as recent re-entry rate for Starlinks is close to this maximum replacement rate (but that may be temporary). Reason Starship is primarily designed as a future Starlink launcher (or Starlink can't be improved/maintained):

arstechnica.com/space/2025/02/

Stephen Brahamwarp@noc.social
2025-01-31

My lunar and public safety satcom worlds just crossed over for Verizon's ad for upcoming ASTS-based satcom services, via Buzz Aldrin ;). I almost went for a drive in the Antarctic with Buzz once, so fits ;)

lightreading.com/satellite/ver

Stephen Braham boosted:
MastodonMastodon
2025-01-13

Today Mastodon is taking another step towards its founding ideals: independence and non-profit ownership. We're transferring ownership of key assets to a new, European not-for-profit entity, ensuring our mission remains true to a decentralised social web, not corporate control.

blog.joinmastodon.org/2025/01/

Stephen Brahamwarp@noc.social
2024-12-05

Will be an interesting ride. I think Gateway is the most at risk, as is CLPS, which impacts international collaboration with NASA, both in terms of missions and instruments flown, and crew and science collaboration inside Artemis. But it is also important to realize the contracting method means killing those things saves almost no money, as fixed contracts (it cost $Bs to kill CxP):

spacenews.com/starships-space-

Stephen Brahamwarp@noc.social
2024-11-27

FCC is allowing SpaceX to switch on commercial DTD/DTC service on Starlink but presently requiring that they keep to ITU WRC-23 limits (which they wanted to be 18 times over, and are presently 2 times over) on aggregate OOBE epfd in the PCS band. So we can probably expect permission for AST as well, but they'd have a lot more capacity and throughput due to their lower OOBE to in-band RxP ratio (so can transmit more):

docs.fcc.gov/public/attachment

Stephen Braham boosted:
East Anglia BylinesBylinesEast
2024-10-21
Stephen Brahamwarp@noc.social
2024-10-21
Stephen Brahamwarp@noc.social
2024-10-17

Meanwhile, the suit that will use the cellular #3GPP #EVA concepts we've been developing here at #SFU since 1998, and on which we're doing lots of work these days, now gets Prada, as per yesterday at #IAC2024:

axiomspace.com/release/prada-a

Stephen Brahamwarp@noc.social
2024-09-21

Meanwhile, SpaceX now wants 17 GHz to also allow more transmit power than present plans. Which would interference with #5GAdvanced and #6G terrestrial network potential, but may be more acceptable (this is for broadband and not the issues with their cellular service plans):

fcc.gov/ecfs/search/search-fil

Stephen Brahamwarp@noc.social
2024-09-19

SpaceX files another document with FCC late last night. Replacing their previously filed direct-to-cell antenna pattern, seemingly so that Dish Networks doesn't get the data, according to their own document. Using a standard ITU pattern that would make even off-beam interference pretty strong, for low altitude sites:

fcc.gov/ecfs/search/search-fil

Stephen Brahamwarp@noc.social
2024-08-29

My colleague and co-author Rob Ferl goes into #Space today, to science! Have a great ride, Rob! youtube.com/live/HG8wIiE1HnM?s

Stephen Brahamwarp@noc.social
2024-06-26

Important from @sciguyspace and will be sad if true (and Eric is good). I have written papers on lunar/Mars suit computing and comms with folks in this company, going back decades:

arstechnica.com/space/2024/06/

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