B: Applications

Satellite Development Advances as GPS Survives Budget Cuts, LightSquared

Satellite Development Advances as GPS Survives Budget Cuts, LightSquared

New GPS III Test Chamber (Lockheed Martin photo)

The United States GPS program is without doubt the elder statesman of GNSS, but it has had some close calls recently.

At the 2012 Munich Satellite Navigation Summit in March, a high-level Department of Transportation offical and the head of the Air Force GPS Directorate hailed continuing progress on the Global Positioning System’s third-generation satellite development and next-generation control segment (OCX), while apparently escaping — relatively unscathed — the dual perils of Congressional budget cuts and LightSquared interference.

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By Inside GNSS
IFEN and WORK Microwave Announce More Upgrades for NavX-NCS Simulators
March 28, 2012

IFEN and WORK Microwave Announce More Upgrades for NavX-NCS Simulators

IFEN GmbH and WORK Microwave have announced a new round of enhancements to the NavX-NCS line of GNSS multi-frequency simulators.

Increased usability and control is achieved through the new NCS Control Center software release V1.7, according to the Germany-based companies. The GNSS simulators now feature motion models that simulate the physical behavior of various types of vehicles or vessels, including airplanes, trains, cars, trucks, and ships.

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By Inside GNSS
Arrow Prev
March 27, 2012

Galileo GNSS Through Children’s Eyes

Galileo by Irina of Romania

[Updated March 27] We see lots of graphs, schemata, renderings and photographic images of the GNSS satellites and constellations. Perhaps it’s time to rest the eyes with imaginative images of space and satellites through the eyes of children.

Over a number of years, up to 30 of Europe’s Galileo navigation satellites are expected to reach orbit and each of them will be named after a child from one of the 27 European Union countries.

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By Inside GNSS
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UrsaNav Tests eLoran, LF Timing Potential
March 26, 2012

UrsaNav Tests eLoran, LF Timing Potential

UrsaNav LF transmitter site for timing synchronization trials

Virginia-based engineering firm UrsaNav Inc. has begun transmitting a variety of low frequency (LF) test signals, including enhanced Loran (eLORAN), as part of a cooperative research and development agreement (CRADA) with the U.S. Coast Guard (USCG).

The test program include a comprehensive palette of signals that are being evaluated for their ability to provide a robust, wide-area, wireless precise timing alternative that can operate cooperatively with GNSS technology or autonomously during GNSS unavailability.

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By Inside GNSS
SBIRS Decision Could Undermine Prospects for GPS Dual-Launch
March 22, 2012

SBIRS Decision Could Undermine Prospects for GPS Dual-Launch

SBIRS GEO-2 satellite in Baseline Integrated System Test (BIST-1). Lockheed Martin photo.

The Air Force is poised to forego putting nuclear detonation detection sensors on the Space-Based Infrared System (SBIRS) satellites, a decision that could complicate efforts to maintain the GPS system by hampering plans to launch multiple, lighter GPS satellites on a single rocket.

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By Inside GNSS
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GPS Dot Hanks image.jpg

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
IFEN and WORK Microwave Introduce Enhanced NavX-NCS GNSS Simulator
February 23, 2012

IFEN and WORK Microwave Introduce Enhanced NavX-NCS GNSS Simulator

IFEN, the Poing, Germany–based manufacturer of GNSS navigation products and services, working in partnership with WORK Microwave, have announced an enhanced version of IFEN’s NavX-NCS Professional, a multi-frequency GNSS simulator.

Optimized for research and development of GNSS safety and professional applications, the enhanced version of the NavX-NCS Professional incorporate the following key features:

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By Inside GNSS
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