asteroza + communications   155

How a ground and space network will connect the world – in near-real time - Inside Viasat blog
Interesting, using their observation sats as realtime interorbital relays for other customers as well
realtime  orbital  crosslink  relay  service  satellite  communications 
4 weeks ago by asteroza
Enabling Covert Body Area Network using Electro-Quasistatic Human Body Communication | Scientific Reports
Interesting body area network concept, but the range limits for an adversary depend a lot more on noise floor and antenna quality. Though I suppose this making it hard enough that someone normally needs to touch you to connect may be enough of a security hurdle...
electroquasistatic  human  body  communications  EQS-HBC  BAN  area  network  low  power  hardware  electronics  devices  networking  medicine  health  security 
march 2019 by asteroza
Looks like they were previously pursing flying ducted wind turbine power generators, but pivoted to deployable tethered aerostat flying cellphone towers
aerostat  tethered  flying  wind  turbine  power  generator  cellular  base  station  tower  communications  startup 
march 2019 by asteroza
possible OneSpace phased array ground terminal antenna maker, a side project/startup by Greg Wyler
flat  panel  phased  array  VSAT  grount  terminal  antenna  telecommunications  satellite  communications  newspace 
march 2019 by asteroza
Open-sourcing Magma to extend mobile networks - Facebook Code
This appears to be a fork of the OpenAirInterface EPC (OAI EPC) that runs on LTE gear, so not quite a LTE stack per se
facebook  magma  OAI  EPC  LTE  stack  telecommunications  cellular  communications  network  controller 
march 2019 by asteroza
EOS | Electro Optic Systems | Optical Communications
Demoed a deep space lasercomm with Hayabusa 2 while it was at asteroid Ryugu?
deep  space  lasercomm  laser  communications  JAXA 
february 2019 by asteroza
Publications | Outflank
DoH turning into a Doh! You may begin to hate yourselves...
virus  C2  secondary  communications  channel  beacon  DNS  DoH  HTTPS  SSL  TLS  SPF  security  hacking  pentesting  redteam 
october 2018 by asteroza
experimental anonymous comms network that is trying to be traffic analysis immune, particularly near endpoints which are under local adversarial organization control (aka corp networks)
privacy  anonymity  encryption  anonymous  communications  protocol  research  software 
august 2018 by asteroza
UHD Video Transmission Over Bidirectional Underwater Wireless Optical Communication - IEEE Journals & Magazine
Uses green laser for downlink/primary data, blue for uplink/feedback for compensating for poor water clarity
underwater  laser  communications  lasercomm  UWOC  optical  blue  green  adaptive  link  research  technology  video 
may 2018 by asteroza
SIP Signaling JavaScript Library for WebRTC Developers | SIP.js
Adding some SIP functionality to webRTC to enable PBX/teleconferencing/videoconferencing features
webRTC  SIP  javascript  library  communications  videoconferencing  teleconferencing  webdev 
october 2017 by asteroza
Datenübertragung per Laser: Bestmarken geknackt
10Km terrestrial lasercomm link at 1.72 Tbps, so conditions are roughly equivalent to a ground-to-orbit lasercomm link
DLR  Fraunhofer  EU  europe  germany  space  communications  freespace  optical  networking  laser  lasercomm  research  Delicious 
november 2016 by asteroza
BridgeSat - Satellite data bandwidth ground station network
New commercial smallsat lasercomm terminals for smallsats, plus a ground receiver network? Now teaming with Boeing for the ground network buildout...
lasercomm  space  laser  communication  communications  hardware  electronics  devices  satcom  terminal  smallsat  cubesat  optical  ground  receiver  network 
august 2016 by asteroza
Kepler Communications |
Trying to build an orbital backbone for smallsats, to gather comms to larger high bandwidth birds. Sounds like MIMO phased array antennas?
satellite  constellation  orbital  space  communications  backbone  infrastructure  smallsat  network  MIMO  antenna  phased  array  RF  link  Delicious 
july 2016 by asteroza
OSA | Luminescent detector for free-space optical communication
Facebook improving fresspace lasercomm receivers by doping optical waveguides with frequency shifter dyes to catch scintillation diffracted laser light for a wide field of view.
scintillation  effect  compensation  flourescence  flourescent  dye  doping  luminescent  concentrator  optical  fiber  wave  guide  waveguide  detector  large  FoV  optics  materials  science  research  technology  facebook  freespace  laser  communications  lasercomm  receiver  Delicious 
july 2016 by asteroza
goTenna | No service, no problem.
Uses a low power FM radio as a long-ish range outdoor mesh network repeater/range extender thingy to connect smartphones in the wilderness. Only does voice and text messaging though, but considering the underlying bandwidth that's pretty good.
offline  outdoor  offgrid  communications  wireless  bridge  smartphone  accessories  hardware  electronics  devices  radio  FM  survival  gear  camping  antenna  range  extender  bluetooth  Delicious 
january 2015 by asteroza
LTE Direct Research Project
So a bad mix between ham radio and iBeacons, but you can't randomize your MAC address (IMEI) so you are always identifiable. Won't work for protest situations as a carrier can functionally prohibit by disabling authorization for spectrum. Might be nice for disasters to form mesh networks assuming the authorization infrastructure survives.
LTEdirect  LTE  direct  local  p2p  packet  radio  protocol  communications  infrastructure  security  mesh  network  Delicious 
september 2014 by asteroza
Titan Aerospace - Solar Atmospheric Satellites
Facebook tried to buy this company and reserving exclusive production for over 1100 comm relay aircraft for the initiative. But Google bought them out instead (for project Loon, a competing initiative?
google  ProjectLoon  Facebook  titan  HALE  solar  PV  electric  UAV  drone  aircraft  aviation  technology  research  high  altitude  surveillance  hardware  endurance  long  duration  flight  sensor  communications  relay  platform  Delicious 
september 2013 by asteroza
SpaceGroundAmalgam, LLC
Won a NewSpace business plan competition for developing large diameter inflatable satellite reflector antennas.
space  inflatable  antenna  reflector  materials  science  research  technology  communications  Delicious 
august 2012 by asteroza
Sonardyne announces collaboration with WHOI engineers to launch a unique subsea optical communication technology – BlueComm
No company website yet, but Lumasys will be fielding commercial versions of BlueComm, a 200m range underwater blue LED optical communications platform, capable of 20Mbps. Matching this up with both TCP/IP, and delay tolerant networking (DTN) would make this really useful for underwater ROV teleoperation. Unfortunately, probably still defeated by a container full of tape in the bandwidth department, but beats the pants off acoustic systems (if you can tolerate the range limit or can employ a relay mesh network).
Sonardyne  Lumasys  BlueComm  underwater  optical  communications  protocol  software  hardware  electronics  devices  blue  light  LED  ROV  teleoperation  remote  control  UUV  Delicious 
august 2012 by asteroza
Developing power-over-fiber communications cable: When total isolation is a good thing – Sandia Labs News Releases
Low power for now, but allows remote powering of sensors and provides data transmission capabilities, all in one cable. Endgame probably is a prism on the sensor end, splitting off power frequencies to the photovoltaic power cell, and the communication frequencies to the optical data sensor.
PoF  power-over-fiber  remote  power  supply  communications  fiber  optics  cable  optical  Delicious 
february 2012 by asteroza
SonicNotify: Creating media in presence
Using embedded ultrasonic coded data to transmit information to smartphones, this is the audio equivalent to the QRcode. May have potential a digital watermark on live event music/audio streams. The advertising possibilities are almost endless, since any advertising URL's are automatically embedded (provided your particular audio codec which you use for recording doesn't strip ultrasonics out).
SonicNotify  embedded  high  frequency  ultrasonic  data  code  watermark  information  android  iPhone  app  software  advertising  marketing  secondary  communications  channel  Delicious 
february 2012 by asteroza
Spray On Kit
Apparently this is the real deal, a nanoparticle/nanocapacitor suspension paint. A spray on paint kit to create either a conformal antenna or to enhance an existing antenna. They painted a tree and were able to send VHF signals 14 miles. Boosting existing antennas is anywhere from 10% to 40% (40% was 20dBm for an iPhone 3 test). The videos also talk about potential uses in other EMF applications, such as (?AC) electric motor windings.
surface  aftermarket  spray  coating  antenna  booster  paint  conformal  military  communications  technology  iPhone  kit  nanoparticle  particle  suspension  colloid  capacitor  nanocapacitor  materials  science  research  nanotechnology  Delicious 
february 2012 by asteroza
Building up a comprehensive email so people understand you the first time is hard. The guys behind Screensteps stripped it down so it's focused on making documents for communicating ideas (rather than a full blown tutorial) so this should be pretty good.
BlueMango  Clarify  communication  communications  simplification  tools  utilities  software  service  screencapture  social  media  email  web  Delicious 
september 2011 by asteroza
Tactical Vest Antenna System™ | Wearable Antenna Technologies Inc.
Wearable is kinda stretching the definition here, since this is a hard antenna that fits under a hard plate in an armored vest plate carrier.
tactical  plate  carrier  vest  antenna  insert  wearable  military  communications  technology  radio  Delicious 
july 2011 by asteroza
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