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Why The US Military Made GPS Free-To-Use

MilkmanDan says...

Interesting and good, but it missed an opportunity to talk about another reason that Clinton removed the scrambling that reduced accuracy to ~100m in 2000:

It was fairly easily circumvented.

Your GPS device isn't sending anything TO the satellites -- just receiving FROM them. So, the scrambling had to be done on a system-wide scale; it couldn't skew your location 37m to the west and your friend a block away 62m northeast. So, every device in a particular area (that can see the same satellites) would be skewed by essentially the same distance and direction.

That means that all you needed to circumvent the scrambling was a GPS device relatively nearby at a known latitude and longitude. Then you took the GPS reported coordinates of that device and compared them to the known coordinates, and badda-bing you've got the skew figured out.

I remember that system being used to overcome the scrambling in the late 90's for robotics / AI competitions where things like early versions of drones or other robots had to autonomously navigate a maze or move towards some particular target coordinates.

Basically, if nerdy robotics enthusiasts could circumvent the scrambling, surely a motivated enemy military or terrorist group could too. So, there wasn't much point in continuing it. Ending the scrambling was a good thing for Clinton to do, but I'm sure that impracticality played just as much if not more of a part in his decision as benevolence towards citizens of the Earth / potential economic rewards for American companies did...

20 Games That Defined the Texas Instruments TI-99/4(A)

Adam Savage rebuilds the hedge maze from The Shining

spawnflagger (Member Profile)

Charlie Brooker's 2014 Wipe

dannym3141 says...

This is the only thing i look forward to about new years. Lol at max clifford "mimicking a human".

A-FUCKING-MAZING bit at the middle about non-linear rule based on confusion. God, god i wish everyone could get to grips with that. That's everything i ever wanted to say about politics.

It's even got a rap-off between david cameron and alex salmond.... we're not even done!

Android 207 stop-motion short

oritteropo says...

The indieflix link above has died, but archive.org has it - http://goo.gl/6fz17Z - and confirms the film is from Paul Whittington.

He has posted it on his yt channel... updating embed from that and also *length=598

Also, in the description, he has a dvd available from Amazon with this film and some others http://goo.gl/t7LFqG

Films included are:
- Android 207 (an android is trapped inside of a large maze)
- L19: Disposed (the last few minutes of an android's life)
- The Kitchen Trilogy (three films that showcase a menacing look at the baking, carving, and juicing of food)
- Inanimate Objects (when the humans are way the objects will play)
- Table Kid Kirby (a five part stop-motion animated series about a small clay man stuck on a table)
- Dead Fish (a wasteland of dead fish an those who feed on them)
- Isabel Knew Too Much (a friendly dog begins to comprehend the world around her)
- Plus more...

Maze game prank 2014 - funny videos

When British People Give Commentary On American Football

CC's corn chips - 'can't say no' (Australian ad, 1988)

Photographer Poses Strangers As Family

Congratulations to Pumkinandstorm on reaching Galaxy! (Sift Talk Post)

PlayhousePals says...

Ahhh-MAZING! I am so proud to be your "pal". You are indeed an inspiration ... a shining beacon of tenacity. Thank you for leading the way Jen ... and for guiding me to the Sift. Cat Ladies Rule [making Sifters Drool] ... Mee-OWW!

@dag Loved the ditty!

Very Unusual Chocolate Exhibit...wait for it....

Billy Joel - Sings to the piano accompaniment of student

DARPA's Pet-Proto Robot Navigates Obstacles

mintbbb (Member Profile)



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