That's incredible.
reply> The terror setting in deeper when the consumer GPS unit stopped responding after 30,000' altitude
replyAh yes, the CoCom export control limits so you can't use it to build an ICBM. Legally they're supposed to stop working above 60,000 ft and 1,200 mph, but some manufacturers interpret that as an "or". The rumor was that some really cheap chips out of China failed to implement either, so if you'd bought a crappier gps module, you might have been fine!
That's an awesome story tho!
Ummmm.
replyAny country with the knowhow to make an ICBM can source or build a gps receive without said restriction. Just saying.
That's like putting a sign "no burglary permitted" and leaving the door wide open.
I've recently seen a very concrete example of a Chinese CRPA GPS/Glonass/Galileo receiver which is being integrated into some Russian UAVs. It's a COTS thing the vendor in China will sell to anyone. In addition to not obeying any arbitrary limits on GPS speed/altitude it's a 4-element small array for better signal discrimination.
replyYou’ve just described a significant amount of ITAR. Am Canadian but have to deal with it occasionally. MWIR/LWIR imagers are another prime example. I can order way better (spec-wise at least) IR sensors from AliExpress than I can from the US. Something about high frame rate IR being useful for some kind of guidance towards hot things shrug
replyExplosions&Fire has an interesting video on this. https://m.youtube.com/watch?v=XHDXk9THJZM
replyWell indirectly about how they work and to counter them.
Just cause the rule is dumb doesn't mean it can be ignored...
reply