29/03/2019
Are you ready for GPS rollover？
To all TOPFLYtech 2G/4G GPS trackers will not be effect by the GPS rollover.
The Department of Homeland Security in the United States issued a memo to remind GPS receiver users and operators aware of the GPS Week Number Rollover on April 6, 2019 and prepare for it. GPS uses 10 bits to encode the week numbers into data stream. A binary 10 bits can only cover a maximum of 1,024 weeks, which is approximately 19.7 years. Each 19.7 years is known as “epoch” in GPS terms. At the end of each epoch, the receiver resets the week number to zero and starts counting again – a new epoch begins. The first GPS time epoch started on Jan 6, 1980, and ended on August 21, 1999. GPS Time is presently in its second epoch which will end on April 6, 2019. There may be problems caused by the rollover on April 6, 2019. Some GPS receivers, or other systems that utilize date and time function, may malfunction or work disorderly and the time they output may jump backward by nearly 20 years.
Please check with your GPS device suppliers, whether have the their devices have the issue, if yes, whether they have the firmware to upgrade fix it.
More details please check the link
https://www.gps.gov/
