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December 16, 2014

Official: Foreign GNSS Signals Need FCC Authorization for Use in United States

A rule largely aimed at opening trade in telecommunication services will require Russia and other international providers of GNSS services to apply for authorization before their navigation signals can be legally used in the United States, a Federal Communications Commission (FCC) official has told GPS experts on the Space-based Positioning, Navigation, and Timing (PNT) Advisory Board.

October 5, 2015 - October 9, 2015
Bordeaux, France
Inside GNSS • November/December 2014

GNSS Hotspots

1. Tariffs
Beijing, China

Thinking Aloud • November/December 2014

Year 10

Every so often, anthropologists — and maybe a few mathematicians — have a field day puzzling over the origins of our positional base-10 numeral system.

Oh, not the historical origins themselves, the Hindu-Arabic innovations beginning in the 5th and 6th centuries. That’s all pretty much agreed.

No, I’m referring to the possible physiological inspirations, the readily visible digits at the ends of our limbs: 10 fingers, 10 toes.

Coincidence? Does nature have coincidents, or does it abhor them like vacuums — o horror vacui?

December 15, 2014 - December 19, 2014
San Francisco, California, U.S.A.
Inside GNSS • November/December 2014

Evaluating the Performance of Navigation Payloads

As a navigation satellite transmits multiple signals on single frequency (e.g., Open Service and Restricted Service over L5 Band), these are combined on a common carrier to comprise a composite signal. This composite signal passes through navigation payload subsystems such as an up-converter, traveling wave tube amplifier (TWTA), filters, and so on. These subsystems may introduce adverse effects on the signal, such as amplitude and phase distortion, nonlinear effects, gain imbalance, IQ imbalance, and phase noise.

Inside GNSS • November/December 2014

Higher Aspirations for GNSS

New space missions such as the robotic repair and recovery of damaged or errant communication satellites may become possible with the aid of an emerging class of receivers that is able to use GPS signals for navigation in orbits thousands of kilometers above the middle Earth orbit (MEO) GPS constellation itself.

June 17, 2015 - June 19, 2015
Gdynia, Poland
New Builds • November 14, 2014

Topcon Engineers Track New GLONASS Signal

Topcon Positioning Group has announced that its latest GNSS reference receiver has tracked a new signal from the GLONASS constellation.

The GLONASS-M 55 satellite was launched in June and is equipped
with an experimental payload capable of transmitting CDMA signals in the
Russian GNSS system's L3 frequency band centered at 1202.025 MHz. According to the company, Topcon engineers successfully tracked the signal using the NET-G5
receiver during a series of recent tests at the Topcon Technology Center
in Moscow, Russia.

New Builds • November 6, 2014

u-blox Introduces Tiny Multi-GNSS Module

Swiss-based u‑blox launched its new EVA‑M8M stand-alone positioning module today (November 6, 2014), bringing concurrent multi-GNSS capabilities into the company’s compact EVA footprint.
 

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