January 20, 2015

DoD Seeks Sources for 50,000 eLoran Receivers

In a nod to the usefulness of international enhanced Loran (eLoran) systems the U.S. Department OF Defense (DoD) in January began a search for companies able to supply some 50,000 eLoran receivers. Meanwhile a multi-agency team continues sketching out the structure of a potential U.S. eLoran system for federal officials weighing a relaunch of the program as a backup to GPS. (more)

Galileo Upgrade Will Cause Temporary Decline in Service

Galileo's operation controllers will temporarily stop updating satellite orbital positions in the system's navigation messages beginning near the end of this month in order to help implement upgrades in the ground mission segment, the European Space Agency (ESA) announced today. (more)

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5 Critical Performance Factors to Know When Choosing a Gyro or IMU

Designers and engineers need to compare the attributes of various gyro technologies to determine which sensors offer the required performance parameters. The valuable information in this guide compares gyro and inertial measurement technologies of both fiber optic gyros (FOGs) and Micro-Electro-Mechanical Systems (MEMS) using five distinct critical performance areas of industrial and tactical grade gyros.
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RTCA Begins Standards Work on Quartet of New GNSS-Related Aviation Devices

The group that sets standards for aircraft navigation receivers is planning work on four new types of devices including the first multi-signal and multi-constellation aviation receivers and a more cost effective navigation system to help planes traverse GPS-impaired areas. (more)

GNSS Hotspots

Slave Trade, Greenland: Swiss Cheese on Ice, QZSS Plays Defense, Beastquake. (more)

Thinking Aloud: The Party Crashers

These days getting the United States, Russia, China, and Europe to agree on a common policy seems to be an increasingly rare event. (more)

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