Microcontroller Driven GPS Clock

Abstract

ABSTRACT

GPS satellites (and now GNSS also) generally include more than three (or four) atomic clocks which are monitored and controlled for being highly synchronized and traceable to coordinated universal time as national and international standards. Thus for synchronization of time, the GPS signal is first received, then processedwith help of a“local master clock”, time server, or primary reference, and passed on to "slaves" or other devices such that their "local clocks" are properly synchronized to coordinated universal time The accuracy ranges from better than 1 microsecond to a few milliseconds depending on the protocol used for synchronization. Synchronization is the process of GPS that provides atomic clock complete accuracy without using a local atomic clock. Local atomic clocks are sometimes further desired as a solution for long-term back-up in case of loss -of –GPS information, GPS interference, weather-related outage, or other scenarios.Synchronization of GPS clock removes the necessity ofphysical clock setting which was an error-prone method, to provide traceability to UTC, a national and international standard so thatseveraloutcomes can be associated even if they are time-stamped by different clocks. This includes numerous benefits such as: legally validated time stamps, secure networking, regulatory compliance, and operational efficiency.

 Keywords: GPS module, Microcontroller,power supply,AVR,satellite, UTC, IST, NMEA

Cite this Article:Geetanjali Raj, Upasana Sharma.Microcontroller Driven GPS Clock. International Journal of Telecommunications & Emerging Technologies. 2020; 6(1): 32–36p.