Global Navigation Satellite Systems Engineering, Policy, and Design
Global Navigation Satellite Systems Engineering, Policy, and Design
Return to main article: "GNSS Filtering Options"
By Inside GNSS
Return to main article: "GNSS Filtering Options"
By Inside GNSS
One of my fond memories as a boy growing up in rural northeastern Oregon is sitting on an apple box in the basement of our house reading back issues of National Geographic.
All those wonderful color photos. And the maps, with their little illustrated explanations of Roman ruins in England or Babylonian irrigation practices in the Fertile Crescent!
By Inside GNSS
eCall is the European Union (EU) initiative aimed at reducing road casualties by increasing the speed and efficiency of emergency response. It involves a device installed in cars that will automatically dial the EU’s “112” emergency phone number in the event of a serious road accident.
Key data including time, date, and GNSS coordinates will be sent to the Public Safety Answering Point (PSAP) and then relayed to the most appropriate emergency service. The eCall is triggered by airbag deployment and impact sensor information.
By Peter Gutierrez
It’s spring and privacy proposals are popping up in abundance, threatening to complicate the lives of law enforcement officers, spoil the landscape for some location-based businesses, and choke off the U.S. market for commercial unmanned aerial systems (UAS) before it gets off the ground.
By Dee Ann Divis
Working Papers explore the
technical and scientific themes that underpin GNSS programs and
applications. This regular column is coordinated by Prof. Dr.-Ing. Günter Hein, head of Europe’s Galileo Operations and Evolution.
View equations 1-4
View Equations 5-13
Q: What are the differences between least-squares and Kalman filtering?
By Inside GNSS
FIGURE 1: Proposal to have a single chip GNSS receiver with additional pins to allow for the inclusion of an additional radioQ: What will limit the spread of multi-frequency GNSS receivers into the mass market?
A: To set the scene, we need to define our terms of reference. By multi-frequency we mean receivers that operate with navigation signals in more than just the standard upper L-band from about 1560–1610 MHz where we find GPS L1, Galileo E1, Compass B1, and GLONASS L1. The obvious additional frequency is the lower L-band, from about 1170 to 1300 MHz, where again the same four constellations have signals.
By Inside GNSS
