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I wondered why they didn't go for a mesh network where planes transmit location data over short wave to any other planes in the "area". They would only need to
by lbriner 8y ago
I wondered why they didn't go for a mesh network where planes transmit location data over short wave to any other planes in the "area". They would only need to keep the data for a relatively short period of time before considering the data unneeded. Even in the Indian Ocean, there are usually planes within a few hundred miles that should be able to receive the broadcasts?
- dingaling 8y agoPartly because such events are so rare that such complexity wasn't even considered necessary. It would be designing for the literal one-in-100-million case. And partly because they already transmit ACARS, CPDLC and ADS-B over VHF SATCOM[0]. Why mesh when you can upload directly into the network and settle the bills cleanly with SITA. [0] and also CPDLC over HF
- eitland 8y agoFWIW ships do this. Many of you might know, but for some of you this might be your lucky day to learn about AIS : ) All passenger ships and most other commercial ships are required to have working AIS transmitters (the only exception I know of are fishing vessels while fishing - as to not be forced to shout out their exact location). AIS is picked up by other vessels, coast guard installations, military, a number of receivers in peoples homes and also on satellite (one example I'm familiar with: http://www.kystverket.no/en/EN_Maritime-Services/Reporting-and-Information-Services/Automatic-Identification-System-AIS/Satellite-based-AIS/ http://www.kystverket.no/en/EN_Maritime-Services/Reporting-a...) On https://www.marinetraffic.com/ https://www.marinetraffic.com/ you can watch ship traffic live, and they even have a program where they might give away free receivers. Source: I used to work with large scale radio and radar systems.