![Increasing the Accuracy of Orbital Position Information from NORAD SGP4 Using Intermittent GPS Readings | Semantic Scholar Increasing the Accuracy of Orbital Position Information from NORAD SGP4 Using Intermittent GPS Readings | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/5aa9876051d6ea92372ed8171c8bc2b4fa019f10/3-Figure1-1.png)
Increasing the Accuracy of Orbital Position Information from NORAD SGP4 Using Intermittent GPS Readings | Semantic Scholar
![Once again, GPS to Help NORAD Track Santa Claus' Journey - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design Once again, GPS to Help NORAD Track Santa Claus' Journey - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design](https://insidegnss-com.exactdn.com/wp-content/uploads/2018/12/use-NORAD.png)
Once again, GPS to Help NORAD Track Santa Claus' Journey - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design
KVUE - WONDER WHERE SANTA IS? Norad's Santa Tracker is online tracking his journey! http://www.kvue.com/features/santa-norad | Facebook
![Norad Santa Tracker - Apps for kids to follow Father Christmas' journey online, on mobile | Express.co.uk Norad Santa Tracker - Apps for kids to follow Father Christmas' journey online, on mobile | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/59/590x/Norad-UK-GPS-Tracking-746894.jpg)