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You can't really beat a jammer, sure you can compete for power output, but there is no real stopping it. Aircraft and military positioning concepts are evolvin
by typewithrhythm 1y ago
You can't really beat a jammer, sure you can compete for power output, but there is no real stopping it.
Aircraft and military positioning concepts are evolving towards more map and dead reckoning, lessening the benefit of GPS jamming.
- zinekeller 1y agoThe reason that dead reckoning was inaccurate was because of clock and vector inaccuracies. Looking at the advances in clockpieces and gyroscopes (both of these has benefitted over the optical revolution) over the years, I am not shocked that dead reckoning is back in vogue.
- cameldrv 1y agoDead reckoning is also inaccurate due to unknown winds. Even if you take off with the best available forecast, it’s often wrong by 5mph+. After three hours your position is off by 15 miles. That’s not remotely good enough for most aviation purposes.
- t0mas88 1y agoDead reckoning based on heading and time alone, but if you have a good INS it's not affected by wind only by accuracy of the gyroscopes/sensors. Current systems drift by about 0.5 miles per hour. And that's normal commercial grade systems, I'm sure the military has an option for better systems if they need them.
- deleted 1y ago[deleted]
- zinekeller 1y agoAs t0mas88 said, you don't rely on the measured speed of the aircraft/ship, you rely on gyroscopes (which are much more resistant to external factors), and both clocks and gyroscopes have improved signifcantly (clocks are now better than cesium atoms - read about atomic clocks) and so are gyroscopes (again, optical gyroscopes that are miles better than mechanical ones).
- fanf2 1y agoPortable clocks are not better than static caesium clocks, and optical clocks which are better than caesium clocks are not portable.
- zinekeller 1y agoEh, not smartphone-like portable, sure, but publicly (https://english.kyodonews.net/news/2025/03/c0945eb14bb6-japans-shimadzu-launches-worlds-1st-commercial-optical-lattice-clock.html https://english.kyodonews.net/news/2025/03/c0945eb14bb6-japa...) it can now be fitted on a ship or submarine (and I won't be surprised if there is classified miniturization out there).
- plextoria 1y agoCorrect me if I’m wrong, but wouldn’t a jammer be very easy to disable kinetically? A missile would simply have to follow the jammer’s signal.
- petre 1y agoThe obvious problem with this approach: destroying a jammer in foreign country with a missile is an act of war.
- firesteelrain 1y agoBe an interesting feature to add to the AGM-88E.
- deleted 1y ago[deleted]
- bluGill 1y agoMissels are expensive. Jammers can be farther away than a cheap drone can reach. Jammers often move. Your missle often cannot manovure well enough to hit. jammers often turn off - if you missle is detected they turn the jammer off and move it. They are often running more than one jammer so getting one to turn off isn't going to matter.
- fpoling 1y agoPlus aircrafs can use Earth gravity map. Sensors became accurate enough to detect minuscule changes in gravity strength to position aircraft to few hundred meters.
- bob1029 1y agoYou can defeat a jammer if you are willing to use more spectrum than your opponent and/or can sacrifice information rate.
- lxgr 1y agoTrue, but both very hard to do in a system that's deployed to space and (heavily regulated) avionics part of aircraft that get upgraded very infrequently, to say nothing of the billions of other civilian receivers.
- amelius 1y agoWhat if you used directional antennas?