GNSS (all systems)

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May 19, 2016

Inter-Signal Correction Sensitivity Analysis

Modernized GPS satellites give civil users the ability to achieve dual L1/L2 PY accuracy using dual L1CA/L2C ionosphere-free measurements and, with IIF satellites, dual L1/L5 signals. Because broadcast GPS ephemeris data is based on an ionosphere-free pseudorange calculated from dual L1PY/L2PY measurements and the civil signals are not all perfectly aligned to it, new broadcast parameters and a new modernized dual-frequency algorithm are needed in order to align new signals with the dual L1/L2 PY signal.

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By Inside GNSS
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Up in the AIRR
March 28, 2016

Up in the AIRR

Anyone who has sat through several iterations of a slide presentation by the Federal Aviation Administration (FAA) can’t help but wonder if there isn’t a better way to do things.

As speakers flip through an exhaustively vetted series of PowerPoint slides, squeezing out a new bullet point or two from one version to the next six months later, watching paint dry seems like a more productive — and briefer — use of one’s time. The agency sometimes brings a whole new meaning to the concept of geological time.

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By Dee Ann Divis
Sandy Kennedy: Here to Stay
March 18, 2016

Sandy Kennedy: Here to Stay

>>Sandy Kennedy’s Compass Points

Sandy Kennedy grew up in Miami. Miami, Manitoba, Canada, that is — a town of 150 people with a school, a café, a defunct railroad station, and an ice skating rink.

Now she’s director and chief engineer in charge of receiver core cards at NovAtel Inc., a developer and manufacturer of high-precision GNSS products headquartered in Calgary, Alberta. It’s a long way from where she started, but then again, maybe not.

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By Inside GNSS
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What are the fundamentals of an effective GNSS test plan?

What are the fundamentals of an effective GNSS test plan?

Q. What are the fundamentals of an effective GNSS test plan?  

A. One aspect of GNSS development that engineers often find challenging is the lack of common testing standards and procedures. This can make life difficult for the engineer tasked with constructing a test plan for a new GNSS-enabled system. How much testing is proportionate, at which stages of development? What are the key performance parameters to measure? What apparatus is best suited to the application, and what are the appropriate pass/fail criteria?

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By Inside GNSS
How Privatizing Air Traffic Control Could Affect Satellite Navigation’s Role in Aviation

How Privatizing Air Traffic Control Could Affect Satellite Navigation’s Role in Aviation

The satellite-based NextGen program is in trouble — no question about it.

The Federal Aviation Administration (FAA) air traffic modernization effort will likely cost triple its original $40-billion program budget and need an extra decade — until 2035 or beyond — to reach completion, according to 2014 testimony by Department of Transportation (DoT) Inspector General Calvin Scovel.

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By Dee Ann Divis
RIN Event: The Future of GNSS
March 17, 2016

RIN Event: The Future of GNSS

The Royal Institute of Navigation will host a one-day event on The Future of GNSS with speaker Prof. Terry Moore on April 21, 2016 at the Warsash Maritime Academy in Southampton, England.

The speaker will outline the future of GNNS and its systems, anticipated changes and the impact of these developments.

This meeting which is joint with the NI and UK Hydro Society will be followed by the RIN Solent branch AGM.

This event is free. Prior booking not required, guests are welcome.

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By Inside GNSS
DGON Inertial Sensors and Systems 2016
March 16, 2016

DGON Inertial Sensors and Systems 2016

The German Institute of Navigation’s (DGON) 2016 symposium on inertial sensors and systems, ISS, and gyro technology will take place in Tulla Hall at the Karlsruhe Institute of Technology (KIT) on September 20 and 21.

As modern systems for navigation, localization and guidance are increasingly making use of supporting data from non-inertial sensors, the conference particularly appreciates papers on hybrid systems, those that fuse inertial with GNSS, visual, infrared, radar or other sensors.

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By Inside GNSS
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