Subscribe via RSS

Archives by Date
October 2008
September 2008
August 2008

See all Archives
Archives by Category
'Canes
Afghan Update
Ammo and Munitions
Armor
Around the Globe
Av Week Extra
Axe in Iraq (and Elsewhere)
Bizarro
Blimps
Blog Bidness
Body Armor Blues
Bomb Squad
Brownshoes in Action
Bubbleheads, etc.
Cammo Green
Catch the "Buzz"
Chem-Bio
Civilian Apps
Cloak and Dagger
Commandos
Comms
Contingency Ops
Cops and Robbers
Cyber-warfare
Data Diving
Defense Tech Poll
Dissent Tech
Door Kickers
Drones
DT Administrivia
Eat DT's Dust
Extra! Extra!
Eye on China
Fast Movers
FCS Watch
Fire for Effect
FOS Files
Friday Funnies
Gadgets and Gear
Going Green
Grand Ole Osprey
Ground Vehicles
Guns
Homeland Security
In the Weeds with Eric
Info War
Iraq Diary
Jarhead Jazz
JSF Watch
Just War Theories
Lasers and Ray Guns
Less-lethal
Logistics
Los Alamos and Labs
M4 Monopoly
Medic!
Mercs
Missiles
Money Money Money
Most Wanted
MRAP Edge
Net-Centric
Nukes
Old Skool
Our Shrinking Planet
Planes, Copters, Blimps
Politricks
Polmar's Perspective
Popular Mechanics
Rapid Fire
Raptor Watch
Red Team
Retro-Futuro
Robots
Roll Your Own
Sabra Tech
Ships and Subs
Snipertech
Space
Special Ops
Star Wars
Strategery
Stray Trons
Tactical Development
Terror Tech
The Deadlies
The Defense Biz
The Peoples' Site
The Sunday Paper
The Tanker Tango
The View from Av Week
Those Nutty Norks
Training and Sims
Trimble on the Case
Video Lounge
War Update
Ward'z Wonderz
You can run...

See all Archives
Newsletters

Edited by Christian Lowe | Contact

USAF WANTS SELF-AWARE SATELLITES

msti1-th.gifThe possibility of a sneak attack in space has the Pentagon spooked. And one of the things that makes Rummy & Co. the most nervous is that nobody has a clue what's actually up there in orbit. Imagine how vast and opaque the seas must have seen to World War I-era commanders, and you'll get the idea.

There are an array of efforts underway to try to fix this. But a just-introduced Air Force program wins the coolest name award. And it could be in the running for a biggest-bang-for-the-buck prize, too, if it ever gets off of the ground.

"The Self-Aware Satellite" (scroll waaay down) starts with the premise that orbiters already have a lot of sensors on board. But these instruments are oriented inward, to keep tabs on the satellite's health. What's worse, many of the sensors "are fixed and uni-purpose, and they cannot be accessed in a way inconsistent with this originally envisioned purpose," the Air Force notes.

The Self-Aware Satellite – also known as Satellite-As-A-Sensor, or SAAS – looks to break that rigid mold, and let free up the orbiters' instrumentation.

In SAAS, all sensor data is posted to a centralized database, which can be freely accessed in real-time by a satellite's own processor(s). Sensors can furthermore be redirected to other purposes. For example, a timing, telemetry and control (TT&C) radio can be retargeted to behave as a radio-frequency (RF) threat-warning sensor when not otherwise engaged. Correlations between sensors can be analyzed by the platform on orbit. When combined with an autonomous ability to exploit the information for short-loop responsive actions, a "self-aware" satellite is created.

But pulling off this trick means doing a big time reworking of satellites' closed and centralized software. And it means reprogramming sensors, so they can spot both internal trouble as well as threats from without.

Comments