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This week SpaceX petitioned the FCC to reconfigure their Starlink constellation and Elon Musk outlined their beta testing plan. As shown below, the most significant configuration change is reducing the altitude of four of the five groups of orbital planes by around 50%. The total number of satellites and the number orbiting at a 53-degree inclination, which gives good coverage over relatively affluent regions, are not changed very much. more
OneWeb has filed for Chapter 11 bankruptcy. OneWeb CEO Adrian Steckel stated that they were "close to obtaining financing" but failed as a "consequence of the economic impact of the COVID-19 crisis." That is plausible, but they were also far behind SpaceX Starlink in launch cost and capacity. (SpaceX, remains open as an essential industry working on defense contracts, but two employees have tested positive for COVID-19) and financial analyst Tim Farrar said SpaceX faced a "near-term cash problem" even before the pandemic). more
I've been watching the progress of the low-orbit satellite providers, which are promising to bring broadband solutions across the planet. There has been some serious movement since the last time I discussed their status. On January 29, Starlink launched its latest round of low-orbit satellites, bringing the number in space to 242. Not all of these will be delivering broadband. The first half dozen satellites were test units to try out various concepts. more
Word has leaked out that Apple is working on a satellite project. The company is at the beginning of the research project, so there is no way to know exactly what they have in mind. For example, is the company considering launching satellites, or would they lease capacity from one of the other planned satellite networks? The fact that Apple is working on the concept is a good segue to discuss the many ways that satellite connectivity could be useful to Apple or other companies. more
The Geely Holding Group (GHG) is a private Chinese conglomerate that is highly diversified but best known as an auto manufacturer that envisions itself as a "global mobile technology group." GHG announced this week that it has begun construction of an intelligent satellite production and testing facility that will include modular satellite manufacturing, satellite testing, satellite R&D, and cloud computing centers.
Update Mar 2, 2024:
Geely launched eleven satellites in the same 50-degree inclination plane as the first nine, but there was a considerable delay between the two launches. The first nine were launched in June 2022 and the second 11 were launched in February 2024. The delay may have been caused by a satellite re-design -- The mass of these satellites is 130 kg whereas the first nine satellites had masses of 100 kg.
The launch cadence will have to speed up if they are to reach their goal of beginning service with 72 t satellites next year. more
In a study of the Internet in China in the late 1990s, my colleagues and I observed that "China has been able to execute plans effectively by allocating resources to competing, government-owned enterprises," and Kai-Fu Lee shows that they have pursued a similar strategy with respect to AI. Now they are doing the same with low-Earth orbit (LEO) broadband satellite constellations. more
I posted reviews of important LEO-satellite Internet service developments during 2017 and 2018. I've been updating those posts during the years and have 16 new posts for 2019. In 2019 we saw four inciteful simulations, Leosat suspending operations and Amazon announcing the availability of a new ground station service and plans for a LEO constellation, progress in phased-array antennas but a lowering of expectations for inter-satellite laser links (ISLLs), new competition from China... more
Handley's simulation shows that, while not as fast as an equivalent ISLL path, long bent-pipe paths would typically have lower latency than terrestrial fiber routes between the same two points. Mark Handley, a professor at University College London, has made two terrific videos based on runs of his simulation of the first – 1,584 satellite – phase of SpaceX's Starlink Internet-service constellation. I discussed the first video, which assumes that the satellites have inter-satellite laser links (ISLLs), in recent post. more
ETECSA reports that over 110,100 Cuban households have DSL connectivity using their Nauta Hogar service. There are also shared facilites – 986 WiFi hotspots (127 in Havana) and 347 Navigation Rooms (44 in Havana) with 1,309 computers (304 in Havana). These services are dead-ends on the road to hoped-for "computerization." The Cuban population is around 11 million so, after three years, roughly one person in 100 lives in a Nauta home and the services are limited geographically... more
Last May, SpaceX founder Elon Musk tweeted "6 more launches of 60 sats needed for minor coverage, 12 for moderate" and SpaceX President and CEO Gwynne Shotwell recently said they planned to be offering service in parts of the US in mid-2020, which would require six to eight 60-satellite launches. The first of those launches will be in the middle of this month on a thrice-flown Falcon 9 booster. (They will also need customer terminals and Elon Musk has used a prototype to post a tweet from his home). more
Inter-satellite laser links (ISLLs) and electronically steerable flat panel antennas are critical technologies for constellations of low-Earth orbit (LEO) Internet-service satellites. Low-cost antennas are critical for the mass consumer market, and ISLLs are required for an effective Internet backbone in space. In an earlier post, we saw that progress is being made on antennas; this one looks at ISLLs. more
Emily Jackson interviewed Dan Goldberg, Telesat President and CEO, in a recent episode of the Down to Business podcast. The interview followed the announcement that the Canadian Government would contribute $85 million (all amounts are in Canadian dollars) to support research and development in support of Telesat's planned constellation of low-Earth orbit (LEO) satellites and another $600 million to subsidize Internet connectivity in rural Canada. more
In spite of being a latecomer to the race to deploy a constellation of low-Earth orbit (LEO) broadband Internet satellites, Amazon's Project Kuiper will be a formidable competitor. SpaceX, OneWeb and Telesat already have test satellites in orbit, but Amazon has several strategic advantages. For a start, each of the LEO broadband competitors plans to end the digital divide by providing global connectivity to end-users and small organizations in underserved areas... more
Compared to Miami, Havana is an Internet desert, but Havana may have 5G wireless connectivity before Miami. 5G architecture, US politics and policy, and the 5G timetable favor Havana. Let's start with 5G architecture. 5G will require many "small cells" because it uses high-frequency radio signals that don't travel as far as 4G signals and are more easily blocked by obstructions like trees and buildings. more
SpaceX on Thursday successfully launched 60 Starlink satellites with its Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Air Force Station, Florida. more
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