Reply to post: No, the sky will not fall in

Fun fact: GPS uses 10 bits to store the week. That means it runs out... oh heck – April 6, 2019


No, the sky will not fall in

I was around working on low level GPS hardware at Philips Semiconductors around the last GPS week rollover.

Even then , the average handheld GPS managed to rollover and keep going.

Even a very old Garmin GPS40 single channel handheld achieved lock with fresh batteries after the rollover, with correct date , time amd position.

This was a GPS that had been stored for years in a boat. The new owner of the boat had just completed a purchase of a replacement in a yacht chandlery when I walked back in with the old pre last rollover Garmin GPS40 working properly....

Any GPS that has memory of last week number last time it had a fix and sees it going reliably 'backwards' can infer a rollover and add 1024 to the week number.. ignoring just getting a rough idea of time from an RTC ...

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