Becareful if you have an older GPS enabled device.
 

If you have a GPS enabled device that is older than 10 years, and it is uses the week counter, you might have some issues.


This won't affect the vast majority of GPS systems, but those exercise logging systems, for example, that are linked to GPS might have a problem next month.


GPS systems made 10 years ago, stored the week in a 10 bit format. The GPS week started at 6 Jan 80. These GPS systems can “only” count up to about 19.7 years. So on 21 Aug 99, all the GPS systems flipped and reset their date clocks the same way that an odometer rolls over. When is the next time GPS flips? 6 April 2019.



The issue is that in 1999 there were a lot less consumer GPS products on the market, especially compared to 2019. I think my toaster is GPS enabled. :D


Not a lot of consumers were affected by the 1999 GPS rollover. But some consumers may be affected on 6 Apr 2019.


The US Naval Observatory is predicting that this flipping won’t affect navigation systems but can affect data systems, especially ones at the consumer level. This will most likely be another Y2K non event, but consumers should be aware of a possible glitch in some of their GPS systems, especially if they are older GPSs.

GPS systems made more recently than 10 years ago store the date in a new 13 bit format. This means that these new GPS systems will flip in the year 2137.

Got any links for this Platy?

That was also my initial thought :yep:

I have no use for GPS...

...people are always telling me where to go...








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Google GPS rollover 2019, We got a special internal notice at my work.

Most sources are claiming this will be a minor event if anything.

"Turn left at the Level Crossing"

"Recalculating... ... ...recalculating..."...





<O>

https://ics-cert.us-cert.gov/sites/d...n_GPS_2019.pdf

The references at the end of the document may also be of interest.

Note that "some manufacturer implementations interpret the WN parameter relative to a date other than January 5, 1980. These devices should not be affected by the WN rollover on April 6, 2019 but may experience a similar rollover event at a future date. For example, a particular GPS device may interpret the WN parameter relative to a firmware creation date and would experience a similar rollover event 1024 weeks after that firmware creation date."

Thankfully I was expected to know how to use these. I was told they would come in handy when the Soviets took out our Transit and GPS systems. They also came in handy when we cruised on our sailboat. :arrgh!:

https://www.militaryaerospace.com/co...Oct%202012.jpg

https://www.skipjackmarinegallery.co...-boxed-reg.jpg

^ Where are the USB charging ports?...







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hehe, We had Capt who at the end of the patrol and making liberty turns for home. Would saunter up to the bridge and announce "BOOM the enemy just blew up the satellite find your way home now"

There's a Patrick Robinson novel, the name escapes me, where a terrorist plot is thwarted by shutting down the worldwide GRS systems; in the story, once it happens, ships all around the world either go aground or collide because the navigators on board have become so dependent they either can't remember or don't know how to navigate without GPS...








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Do they even teach orienteering any more in the Military?

If I were in charge, I would run a full exercise with no satnav, no Internet, and no satcom.

I fear that we could not fight without them

I do believe the Military is aware of vulnerabilities concerning electronic and satellite navigation systems and does practice the ancient art :D navigating with a compass and map