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[pdf] ELROI: A License Plate For Your Satellite, Feb 2018, arXiv
Palmer & Holmes
Abstract
Space object identification is vital for operating spacecraft, space traffic control, and space situational awareness, but initial determination, maintenance, and recovery of identity are all difficult, expensive, and error-prone, especially for small objects like CubeSats. Attaching a beacon or license plate with a unique identification number to a space object before launch would greatly simplify the task, but radio beacons are power-hungry and can cause interference. This paper describes a new concept for a satellite license plate, the Extremely Low Resource Optical Identifier or ELROI. ELROI is a milliwatt-scale self-powered autonomous optical beacon that can be attached to any space object to transmit a persistent identification signal to ground stations. A system appropriate for a LEO CubeSat or other small space object can fit in a package with the area of a postage stamp and a few millimeters thick, and requires no power, data, or control from the host object. The concept has been validated with ground tests, and the first flight test unit is scheduled for launch in 2018. The unique identification number of a LEO satellite can be determined unambiguously in a single orbital pass over a low-cost ground station.
satellite  identity  tracking  arXiv 
20 hours ago by pierredv
OneWeb scales back baseline constellation by 300 satellites - SpaceNews.com, Dec 2018
"Greg Wyler, OneWeb’s founder, said the company will need only 600 satellites or so instead of 900 after ground tests of the first satellites demonstrated better than expected performance."

"OneWeb had been under increased scrutiny within the satellite industry amid speculation that its satellite costs had grown well beyond their initial $500,000 target. Wyler confirmed the satellites had passed $500,000 a unit, but said the exceedance was minimal. "

"Wyler said 600 is the minimum needed for global coverage. Beyond that, OneWeb is deciding whether it will add 300 first-generation satellites or shift to a second-generation constellation designed to layer on more capacity. "
SpaceNews  OneWeb  NGSO  constellations  satellite  business  Greg-Wyler 
3 days ago by pierredv
Satellite Map
Satellite location visualization - replacement for jtrack3D
satellite  visualization  instruction  tutorials  3D 
3 days ago by aviris
Google Earth Studio
うぉー、すごい。素晴らしい。
google  photography  earth  satellite 
5 days ago by summerwind
Orange Business Services connects cargo ships on Northern Sea Route
t also simplifies communication with contractors and port authorities, allocates a local phone number to each ship, and provides unlimited internet and video calls via the Wi-Fi network in the ship // internet of ships:-)
orange  ovum  maritime  satellite 
8 days ago by yorksranter

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