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GNSS & the Law

Markets and Multi-Frequency GNSS

Markets and Multi-Frequency GNSS

FIGURE 1: Proposal to have a single chip GNSS receiver with additional pins to allow for the inclusion of an additional radio

Q: 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.

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By Inside GNSS
The GNSS Merry Go Round

The GNSS Merry Go Round

The whole GNSS world should have a warm spot in its heart for centripetal forces.

After all, a centripetal force — in this case, gravity — is what keeps planets in rotation around our Sun and satellites, around the Earth.

Centrifugal force, of course, is what throws us off a merry-go-round or carousel. Centripetal force is what keeps us on board.

For those on a merry-go-round, the centripetal force is not gravity, but rather the tensile strength of our arms pulling us toward the center of rotation, at right angles to the motion of our seats.

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By Inside GNSS
No Time Like the Present for Europe in Asia

No Time Like the Present for Europe in Asia

Peter Gutierrez

Galileo promoters have always tended to try to link the program to new jobs and economic growth, arguing that once Europe’s global satnav system is up and running, new services will be possible and opportunities for EU companies will abound.

Such arguments needed to be made, to bolster the chronically tenuous political support Galileo has garnered from the European Union (EU) powers-that-be and the chronic lack of faith among just about everybody in Europe’s ability to actually make the system fly.

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By Peter Gutierrez
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More Than Money Worries

More Than Money Worries

Navigation users may benefit from GPS modernization sooner than expected thanks to an apparent shift in the schedule of the modernized GPS ground control segment still under development.

The change means that full operational implementation of the new signals will come earlier in the delayed modernization of the operational control Segment (OCS).

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By Dee Ann Divis
Our Harvest Being Gotten In
November 26, 2012

Our Harvest Being Gotten In

This is, as they say in Hollywood, a wrap.

The final issue of our seventh year heads off to the printer. And tomorrow I will point my car north and west, returning as generations of Americans have done over the centuries to the family farm, the “home place,” for Thanksgiving.

Because this is the season for gathering in and counting up. For gratitude at what we have received in the year past, and for those untoward things that we have avoided.

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By Inside GNSS
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Taking Turns at the Fiscal Cliff
November 18, 2012

Taking Turns at the Fiscal Cliff

The GPS program has taken a fiscal hit that will delay critical plans to begin multi-satellite launches and could ultimately hamper the Air Force’s ability to keep the constellation at its current level of service.

The shortfall is just one of the challenges facing the program over the next four months as the current six-month budget extension winds down, the government’s ability to borrow runs out, and, barring a fast political deal, the onerous budget cuts set up under sequestration kick in.

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By Dee Ann Divis
Brussels View
November 15, 2012

Brussels View

Brussels View offers a European perspective on GNSS developments, particularly on Galileo.

Columnist Peter Gutierrez is based in Brussels, Belgium and has covered the EU satellite navigation programs from the inside out for several years. He received his bachelor’s degree from the University of Texas at Austin and an M.S. degree from the University of Massachusetts at Amherst.

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By Peter Gutierrez
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