Scuds and Patriots CSE 200. History 1 st Gulf war 1991 Iraq attacking US troops using Scud missiles US defense: Patriot missiles.

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Presentation transcript:

Scuds and Patriots CSE 200

History 1 st Gulf war 1991 Iraq attacking US troops using Scud missiles US defense: Patriot missiles

Binary Forms Decimal ~ binary 2 ~ 10 3 ~ 11 8 ~ ~ ~ ~ 0*1/2 + 0*1/4 + 0* 1/8 + 1*1/ *1/32 + 0*1/64 + 0*1/ *1/ =

Patriot Clock Start: 0 secs Elapsed time: how many 1/10 secs 1/10 sec: approximatd by 24 digit binary Off by 25 th binary digit

Patriot Tracking 1. Object detection (Position + velocity) 2. Position prediction after 1sec 3. Based on ballistic trajectory 4. Object at predicted position? -- Fire

The Scud Desaster Patriot System up for 100 hrs Timing off by 0.3 secs Scud position missed by 500+ m Patriot not fired

More… atriot_bug.html