GPS

GNSS Hotspots | August 2012

GNSS Hotspots | August 2012

One of 12 magnetograms recorded at Greenwich Observatory during the Great Geomagnetic Storm of 1859
1996 soccer game in the Midwest, (Rick Dikeman image)
Nouméa ground station after the flood
A pencil and a coffee cup show the size of NASA’s teeny tiny PhoneSat
Bonus Hotspot: Naro Tartaruga AUV
Pacific lamprey spawning (photo by Jeremy Monroe, Fresh Waters Illustrated)
“Return of the Bucentaurn to the Molo on Ascension Day”, by (Giovanni Antonio Canal) Canaletto
The U.S. Naval Observatory Alternate Master Clock at 2nd Space Operations Squadron, Schriever AFB in Colorado. This photo was taken in January, 2006 during the addition of a leap second. The USNO master clocks control GPS timing. They are accurate to within one second every 20 million years (Satellites are so picky! Humans, on the other hand, just want to know if we’re too late for lunch) USAF photo by A1C Jason Ridder.
Detail of Compass/ BeiDou2 system diagram
Hotspot 6: Beluga A300 600ST

1. PAPER CUTS
Washington, Oklahoma, Ohio, Georgia, Pennsylvania
√ State transportation departments in Georgia, Pennsylvania, Oklahoma, and Ohio are printing fewer state highway maps, says the Associated Press. Washington did away with them entirely. Blame it on the double whammy of public sector budget cuts and smartphone, handheld, and in-car GPS. But there are lots of holdouts. As one Indiana man said, without a paper map, “You’re beholden to the GPS lady, you know?”

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By Inside GNSS
PNT Advisory Board Seeks Details on Economic Benefits of GPS

PNT Advisory Board Seeks Details on Economic Benefits of GPS

To help counter pressures from federal budget cutters and wireless advocates searching for more broadband spectrum, the National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board is crafting a study documenting the economic benefits of GPS.

“We have a new assignment . . . to discover and disclose the economic contributions of the Global Positioning System,” Chairman Jim Schlesinger told the board at an August 15, 1012 meeting of the advisory board.

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By Dee Ann Divis
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L-3 Interstate Electronics Demonstrates of New TruTrak Evolution Type II SAASM GPS Receiver at AUVSI
August 8, 2012

L-3 Interstate Electronics Demonstrates of New TruTrak Evolution Type II SAASM GPS Receiver at AUVSI

L-3 Interstate Electronics Corporation (IEC) will conduct an operational demonstration of its new TruTrak Evolution (TTE) Type II Selective Availability Anti-Spoofing Module (SAASM) GPS receiver at AUVSI’s Unmanned Systems North America 2012 conference taking place this week (August 6–9, 2012) in Las Vegas, Nevada.

The demonstration will highlight the new TruTrak receiver’s multi-use capabilities as a high-performing Ground-Based GPS Receiver Applications Module (GB-GRAM) for use on UAS platforms and precision weapons.

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By Inside GNSS
Trimble Launches AP20-C GNSS Inertial OEM Module MEMS Sensors

Trimble Launches AP20-C GNSS Inertial OEM Module MEMS Sensors

Trimble AP20-C GNSS/inertial OEM board with MEMS sensors

Trimble introduced its AP20-C, the latest addition to its AP Series of embedded GNSS-inertial OEM boards, at AUVSI’s Unmanned Systems North America 2012 Conference and Exhibition today (August 7, 2012).

Incorporating a compact, custom-built inertial measurement unit (IMU) based on commercial micro-electromechanical mechnical system (MEMS) sensors, the AP20-C enables system integrators to achieve high-rate position and orientation measurements with exceptional accuracy, according to the company.

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By Inside GNSS
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UAVs: Homeland Security Under Pressure to Take a Greater Role in GPS Anti-Spoofing
July 31, 2012

UAVs: Homeland Security Under Pressure to Take a Greater Role in GPS Anti-Spoofing

A congressional committee overseeing activities at the Department of Homeland Security (DHS) appears poised to push the agency into a more substantive role in overseeing the use of drones in the United States — a move that could force DHS to move more forcefully to protect GPS users from spoofing.

The Subcommittee on Oversight, Investigation and Management within the House Homeland Security Committee is looking to DHS to manage the civil use of unmanned aerial vehicles (UAVs) or drones.

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By Dee Ann Divis
House, Defense Department Move to Bridge GPS Modernization Funding Gap

House, Defense Department Move to Bridge GPS Modernization Funding Gap

Photo by DAVID ILIFF. License: CC-BY-SA 3.0

Both Congress and the Pentagon are putting money on the table to bridge the gap created by delays in the development of the new GPS ground system.

As Inside GNSS first reported earlier this year the Next Generation Operational Control System, or OCX, is running roughly two years behind schedule. It had been expected to be delivered in 2015, however, General William L. Shelton, the commander of Air Force Space Command, said this spring that OCX would be delayed until 2016 or 2017.

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By Inside GNSS
Election Politics May Stall Final LightSquared Decision
July 17, 2012

Election Politics May Stall Final LightSquared Decision

Tim Farrar, TMF Associates

While members of the GPS community are pushing to formally end the threat of signal interference from LightSquared’s proposed wireless network, the political realities of an election year suggest they will have to wait for a decision.

“There are not a lot of reasons to rush,” said Tim Farrar of TMF Associates, a consulting firm that closely follows mobile communications industry, adding it was “unlikely” there would be any progress ahead of the vote in November.

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By Dee Ann Divis
UAVs Vulnerable to Civil GPS Spoofing
July 16, 2012

UAVs Vulnerable to Civil GPS Spoofing

University of Texas–Austin drone

In June a research team from the University of Texas at Austin (UT-Austin) demonstrated for the first time that a civilian unmanned aerial vehicle (UAV) can be commandeered in mid-flight by a civil GPS spoofing attack. The result will likely factor into the Federal Aviation Administration’s (FAA’s) plans to draw up rules for integrating UAVs into U.S. airspace by 2015.

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By Inside GNSS
Galileo SVs Test ‘Dummy’ MBOC Signal in Space
July 13, 2012

Galileo SVs Test ‘Dummy’ MBOC Signal in Space

Galileo IOV’s Composite Binary Offset Carrier (CBOC) modulation on E1 Open Service signal, courtesy of ESA Off-line Analysis SIS Software

The first two Galileo in-orbit validation (IOV) satellites in space have achieved a new milestone, transmitting dummy signals in a modulation scheme designed to allow full interoperability with GPS once operational services start.

“This is an advanced modulation technique that offers robust protection against signal interference and the misleading signal reflections known as ‘multipath’,” said Marco Falcone, Head of Galileo System Services.

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By Inside GNSS
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