DsrtEgl50 - Slashdot User

Anonymous Launches Attack On Sony 347

Posted by samzenpus on Wednesday April 06, 2011 @07:26PM from the attack-of-the-month-club dept.

RedEaredSlider writes "The hacker collective Anonymous has made good on its threat to attack Sony, having launched a distributed denial-of-service attack on Wednesday afternoon. The attack is revenge for the legal action taken against another hacker who modified a PlayStation 3. Sony Computer Entertainment America filed suit against George Hotz, also known as Geohot. Hotz had released a firmware modification that allowed a Sony PlayStation 3 to run other operating systems. Sony had removed that functionality some months before. The suit is still pending."

Comment Re:How does it detect breathing? (Score 1) 86

by DsrtEgl50 on Monday March 21, 2011 @09:16PM (#35567368) Attached to: Mini Drone Detects Breathing and Motion

Doppler shift of the signal against the expanding and contracting thorax. Through static media which can be largely calculated out. Movement of 2 to 7mm is significant enough to detect with a precision UWB STTW radar system, and even easier when it's periodic.

Comment Re:How does it detect breathing? (Score 1) 86

by DsrtEgl50 on Monday March 21, 2011 @07:50PM (#35566616) Attached to: Mini Drone Detects Breathing and Motion

That should be 1/3 - 1/6 Hz signal, ~3 to 6 seconds/breath.

Comment Re:How does it detect breathing? (Score 2) 86

by DsrtEgl50 on Monday March 21, 2011 @07:28PM (#35566388) Attached to: Mini Drone Detects Breathing and Motion

Most of the literature I've read regarding STW and STTW radar monitors the doppler shift on the return signal looking for a periodic ~3 to 6Hz signal corresponding to the typical respiration rate of humans. When found, the source area is flagged for more precise imaging. The motion of breathing is usually subtle enough to be skipped by larger scale motion detection algorithms, and is labeled differently accordingly.

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