asteroza + differential   15

GDGPS:
Huh, sub 10cm on average, sub 3cm most of the time. GLONASS helps most of the time...
differential  GPS  service  navigation 
4 days ago by asteroza
Generating Light from Darkness: Joule
Using narrowband emitters to emit heat through the atmospheric IR window, you can make a plate cold on the sky facing side, creating a heat difference a thermoelectric generator can utilize
narrowband  IR  emitter  surface  treatment  atmospheric  window  heat  differential  night  sky  thermoelectric  generator 
4 weeks ago by asteroza
Storing data in music | ETH Zurich
Embedding small data in music, preferably with lots of dominant notes in 9.1-10KHz range, so pop music. Might be useful for data smuggling in the open, if you are within 24m and can stand 400 baud...
data  smuggling  low  tone  audio  modem  communication  transmission  embed  music  sound  dominant  smartphone  OFDM  differential  acoustic  research  technology  security  hacking  pentesting 
july 2019 by asteroza
SpideyApp - Stingray Detector
Try to detect Stingray interception equipment usage by police by taking baselines of cell tower ID's and characteristics. It attempts to discover "new" local towers that aren't normally there.
android  app  software  MitM  detection  local  cell  tower  change  stingray  police  intercept  interception  detector  countersurveillance  antisurveillance  OPSEC  security  research  LAC  scan  differential  diff  Delicious 
june 2014 by asteroza
One Per Cent: Green Machine: Storing wind power beneath the waves
This seems to be describing an underwater CAES setup, but I though the original concept was actually a pumped hydro based concept. Basically, a strong in compression concrete sphere has a positive displacement pump/generator placed on it, and pumps water out of the sphere at depth. This emulates a pumped hydro dam/lake/reservoir but with a huge hydraulic head. With a deep underwater CAES setup, you run the risk of the sphere becoming buoyant, which kinda defeats the secondary purpose of being an offshore floating wind turbine platform's anchor. Maybe it isn't actually CAES but a simple pressure regulation system to maintain minimum pressure to prevent excess vapor formation (and the risk of ice accumulation)?
CAES  ORES  ocean  offshore  renewable  energy  storage  concrete  sphere  pressure  differential  pumped  hydroelectric  power  generator  green  energy  grid  hydraulic  Delicious 
december 2011 by asteroza

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