Survey and Mapping

New Navigator Seminar
June 8, 2012

New Navigator Seminar

Business School, University of Nottingham Jubilee Campus

The Royal Institute of Navigation will hold a new navigator seminar and networking opportunity at the University of Nottingham on June 14, 2012 for new navigators, engineers, scientists and surveyors who are seeking careers in the industry.

Masters and doctoral level students will present on navigation and positioning topics, advanced undergraduates and postdocs will be in attendance. A number of industry and government representatives will exhibit or attend to listen to new research and meet the new talent.

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By Inside GNSS
GSA Issues Second GNSS Market Report: 1.1 Billion Units by 2020
May 31, 2012

GSA Issues Second GNSS Market Report: 1.1 Billion Units by 2020

The European GNSS Agency (GSA) has published its second GNSS market report, including a special focus on maritime and surveying application markets and refining its projections of unit and sales revenue volumes through 2020.

According to the new GSA report, the worldwide GNSS market is growing rapidly with total market size expected to increase at an average of 13 percent per year until 2016. At that point, increasing market saturation, price erosion, and platform convergence will reduce the growth rate.

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By Inside GNSS
NovAtel, Interstate Electronics Team on SAASM RTK Receiver Board
May 30, 2012

NovAtel, Interstate Electronics Team on SAASM RTK Receiver Board

NovAtel Inc. today (May 30, 2012) announced the development of their OEM625S Selective Availability/Anti-Spoofing Module (SAASM) GNSS receiver, the first product emerging from a collaborative effort with L-3 Interstate Electronics Corporation (IEC).

The OEM625S, which becomes available for purchase in the third quarter of this year, will combine a commercial dual-frequency NovAtel GNSS receiver with an L-3 IEC XFACTOR SAASM in a single card solution, reducing overall size and power requirements for end customer applications.

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By Inside GNSS
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Demystifying GLONASS Inter-Frequency Carrier Phase Biases
May 25, 2012

Demystifying GLONASS Inter-Frequency Carrier Phase Biases

EQUATIONS 1 -11

GLONASS currently uses a frequency division multiple access (FDMA) technique to distinguish the signals coming from different satellites in the Russian GNSS constellation. The GLONASS L1 and L2 bands are divided into 14 sub-bands, and each satellite transmits in one of these.

The sub-bands are identified by frequency numbers k, from -7 to 6. The GLONASS L1 and L2 carrier frequencies, in hertz, at a frequency number k are defined by:

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By Inside GNSS
Truth on the Range

Truth on the Range

Typical Rack-Mounted UHARS System

A next-generation “truth” reference system for the U.S. Air Force (USAF) — the Ultra High Accuracy Reference System (UHARS) — is currently under development by the 746th Test Squadron (746 TS) at Holloman Air Force Base, New Mexico.

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By Inside GNSS
TRANSNAV 2013: Marine Navigation and Safety of Sea Transportation
May 23, 2012

TRANSNAV 2013: Marine Navigation and Safety of Sea Transportation

Transnav 2011

The 10th TRANSNAV symposium will be held June 19-21, 2013 at Gdynia, Poland, a seaport and resort city on the south coast of the Baltic.

The biennial event is an opportunity for scientists and professionals in navigation, transport, ocean engineering and maritime technology to share knowledge and research on all aspects of maritime navigation and safety of sea transportation. The symposium is held in English.

The organizers expect 300 participants from 50 countries or more.

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By Inside GNSS
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Trimble to Acquire SketchUp — Google 3D Modeling Tool
April 26, 2012

Trimble to Acquire SketchUp — Google 3D Modeling Tool

Example of site logistic design by M.A. Mortenson Company using Google’s SketchUp 3D modeling tool

Trimble announced plans today (April 26, 2012) to acquire SketchUp, a popular 3D modeling tools, from its Silicon Valley neighbor, Google, Inc.

Sunnyvale, California–based Trimble signed a definitive agreement with Google, headquartered in Mountain View, with the transaction expected to close in the second quarter of 2012. Although the companies did not disclose financial terms of the deal, a Trimble news release said the transaction “is not expected to be material to 2012 earnings per share.”

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By Inside GNSS
GNSS Modernization
April 3, 2012

GNSS Modernization

Christopher Hegarty

Perhaps for the first time in the nearly 40 years of satellite navigation, all four GNSS programs and regional systems appear to have firm — if not always unencumbered — development paths ahead of them.

GPS, GLONASS, Galileo, Compass/Bei- Dou, Japan’s MSAS and QZSS, and India’s GAGAN and IRNSS systems are bringing new or modernizing elements into the world. Key program enablers — such things as budgets, satellite construction, launches and launch vehicles, new signal designs — all appear favorably aligned.

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By Inside GNSS
LightSquared Fallout May Prompt Push for GPS Receiver Standards
March 29, 2012

LightSquared Fallout May Prompt Push for GPS Receiver Standards

The firefight between LightSquared and the GPS community has sparked regulatory brush fires around Washington with the Federal Communications Commission  (FCC), Congress, a half dozen executive agencies, and numerous companies moving to address a new and likely larger battle over receiver standards, radio frequency spectrum efficiency, and RF spectrum protection.

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By Dee Ann Divis
GPS Dot Hanks image.jpg
March 15, 2012

The GPS Dot and its Discontents

In-home construction of the first civilian-owned civil GPS spoofer.

Over the last few years, several of us in the GNSS community have done our best to convince our colleagues, policymakers, and the general public that unsavory characters with GNSS jammers or spoofers are a genuine threat to GNSS and an orderly society.

"But who would want to use a jammer or spoofer?” people ask.

My response? Hackers, because they can. Thieves planning to snatch expensive cargo. A moonlighting employee in the company car. Worse yet, state actors or terrorists targeting our national infrastructure.

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By Inside GNSS
One-Centimeter Accuracy with PPP

One-Centimeter Accuracy with PPP

The navigation message has always been considered an inherent and essential feature of a global satellite navigation system. Its primary objective is to provide receivers with information on the errors of satellite clocks and parameters to compute the positions of satellites, as well as other parameters that help generate more accurate measurements.  

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By Inside GNSS
GPS Program Budget: A Lot, But Is It Enough?
February 29, 2012

GPS Program Budget: A Lot, But Is It Enough?

The details of President Obama’s 2013 budget have been gradually filtering out and, in general, the GPS system and those programs closely linked to satellite navigation, have escaped deep cuts.

On the hardware side the White House has requested $58.2 for GPS IIF satellite procurement. According to Air Force budget documents, the plan is to then wrap up the total IIF procurement of 12 satellites with a request for $77.6 million in FY14 and $7.3 million in FY15.

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By Inside GNSS
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