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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.
November 17, 2014

Europe Prepares Its Part of GNSS-Enhanced Search & Rescue Service

The European Space Agency (ESA) has announced completion of tests that indicate the readiness of the European component of a modernized, GNSS satellite–aided search and rescue service known as Cospas-Sarsat.

ESA has completed construction and testing of a trio of located on three islands at the far corners of the continent, ready to pick up distress calls via satellite from across Europe and its surrounding waters.

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.

Inside GNSS • November/December 2014

EU and Russia: Lost in Space?

Russia’s involvement in the Ukraine crisis has turned much of public opinion in the West against that country, in particular souring the relationship between the European Union (EU) and Russia. And, while the ceasefire signed in September technically is still in force, the EU-Russia rift is far from smoothed over.

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

Tallysman Launches Smart GPS-GLONASS Antenna

Tallysman has introduced the TW5340 “smart” antenna that pairs Tallysman‘s Accutenna technology with STMicroelectronics’ Teseo II GNSS receiver.

The TW5340 is a multi-constellation GNSS antenna that provides simultaneous GPS/GLONASS/SBAS reception and is designed for use in professional grade applications such as precision timing, network synchronization, or low-current  and tracking/positioning applications.

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