Whut's yer fave when it comes to air traffic management?
GPS vs. Radar
Whut's yer fave when it comes to air traffic management?
Both. GPS can be jammed and spoofed fairly easily, but gives very accurate readings. Radar and other instrumentation are much harder to screw with but aren't as accurate.
If you want to be able to defend against a second 9/11 you need radar. GPS needs an active component on the plane, radar doesn't.
That's actually only true for searching radars. Tracking radars are more accurate than GPS. At Oerlikon we could even hit as small objects as a mortar shell.Originally Posted by wiggin
"Wer Visionen hat, sollte zum Arzt gehen." - Helmut Schmidt
It's probably a good idea to have local infrastructure in case things turn sour.
In the future, the Berlin wall will be a mile high, and made of steel. You too will be made to crawl, to lick children's blood from jackboots. There will be no creativity, only productivity. Instead of love there will be fear and distrust, instead of surrender there will be submission. Contact will be replaced with isolation, and joy with shame. Hope will cease to exist as a concept. The Earth will be covered with steel and concrete. There will be an electronic policeman in every head. Your children will be born in chains, live only to serve, and die in anguish and ignorance.
The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil, no good, nothing but blind, pitiless indifference.
All that we really need is perfect inertial navigation, then it'd be a moot point. Amiright?
The black boxes from Return from the stars?
In the future, the Berlin wall will be a mile high, and made of steel. You too will be made to crawl, to lick children's blood from jackboots. There will be no creativity, only productivity. Instead of love there will be fear and distrust, instead of surrender there will be submission. Contact will be replaced with isolation, and joy with shame. Hope will cease to exist as a concept. The Earth will be covered with steel and concrete. There will be an electronic policeman in every head. Your children will be born in chains, live only to serve, and die in anguish and ignorance.
The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil, no good, nothing but blind, pitiless indifference.
I was thinking more like the dead reckoning navigation used on ICBMs, but sure.
Only issue is that close is good enough for nukes and horseshoes, not necessarily other stuff.I have a friend working on a fancy DoD project to do precision airdrop on the cheap, and they've looked at all sorts of cheapish inertial systems to supplement basic altimeter/GPS/windspeed/etc. measurements. Accuracy is a real challenge, since errors tend to accumulate. Oh, well, I guess we'll have to stick with imperfect solutions for now.
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