shuttler
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Well i remember the 1-gen GLONASS launched from 1990s, but 2-gen GLONASS-M u r RIGHT !20 years? Who told you that? Second-generation satellites Glonass-M, which now form the basis of the orbital group are serving 7 years.
The next generation Glonass-K1, which is now in trial operation will serve 10 years.
At present, GLONASS - the only competitor to GPS. Only GPS and GLONASS have complete constellation, and can navigate anywhere on the planet Earth.
Beidou Navigation Satellite System 2012
Before satellites, getting from A to B without radio signals involved cumbersome inertial systems found only on advanced civilian and military aircraft. Those are still the best backup for GPS, and working with the University of Michigan, DARPA has found a way to reduce the once fridge-sized units to half the width of your fingernail. The chips contain everything needed for precise navigation including an accurate master clock, a three-axis gyroscope and three accelerometers, all contained in three hair-width layers. If it gets out of the lab, it would give soldiers another option in the event of an enemy GPS attack or when they're in a tunnel, and might even guide you to that Macy's restroom if it ever hits civilian form.
India is getting its own satellite systemGood News, latest "BeiDou" terminal receiver for PLA soldier.
In the world only three great countries can build the global position system and satellite chain:
1. U.S's "GPS", still wildly used in all areas.
2. Russia's "GLONASS" , most satellites served more than 20 years.
3. China's "BeiDou", challenge GPS and work for China needs.
Next War is the GPS WAR ~!
Looks COOL, where can I buy it from 淘宝网 - 淘!我喜欢 ??? I also wanna one.
This thread is not about India...India is getting its own satellite system
Looks very interesting. Is there some literature on this?With ASATs this is going to be essential:
Tiny DARPA chip has six-axis inertial guidance for military GPS backup
Hope China is working on something similar.