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Homeland Security’s National Risk Estimate on GPS Disruption: Still a Lot of Unknowns

Homeland Security’s National Risk Estimate on GPS Disruption: Still a Lot of Unknowns

The U.S. Department of Homeland Security has released an abbreviated fact sheet and a summary report on its evaluation of the risks to U.S. critical infrastructure from GPS disruptions.

The unsurprising “bottom line,” as the public summary put it: “U.S. critical infrastructure sectors are increasingly at risk from a growing dependency on GPS for positioning, navigation, and timing (PNT) services. Such dependencies are not always apparent.”

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By Inside GNSS
ESSP Signs €450 Million EGNOS Contract to Augment GPS, GNSS Services
June 27, 2013

ESSP Signs €450 Million EGNOS Contract to Augment GPS, GNSS Services

The European GNSS Agency (GSA) has announced the award of an eight-year, €450 million (US$585.4 million) EGNOS Service Provision (ESP) contract to ESSP, the European Satellite Services Provider.

ESSP has provided EGNOS (European Geostationary Navigation Overlay Service) services since 2009 under the current contract with the European Commission, which continues until the end of this year. The new contract will cover the period 2014-2021 (inclusive).

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By Inside GNSS
Trimble Launches UAS Photogrammetry System
June 19, 2013

Trimble Launches UAS Photogrammetry System

Trimble has introduced its next-generation unmanned aircraft system (UAS) — the UX5 aerial imaging rover with the Trimble Access aerial imaging application.
 
According to the Sunnyvale, California– based company, the new UAS enhances the image quality and workflows its predecessor, the Trimble Gatewing X100. Combined with the Trimble Business Center photogrammetry office software module, the Trimble UX5 is provides a UAS photogrammetric mapping solution specifically designed for surveyors and geospatial professionals.   
 

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By Inside GNSS
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House Committee Makes Deeper Cuts to FY14 GPS Budget
June 18, 2013

House Committee Makes Deeper Cuts to FY14 GPS Budget

The House Appropriations Committee has made a series of cuts to GPS programs that, if agreed to by the Senate, suggest an overall slowdown in the pace of GPS modernization.

While lawmakers on the House Authorization Committee agreed to the full amount of each of the president’s GPS-related requests, their counterparts on the Appropriations Committee cut a total of just over 9 percent from the total budget request for GPS spacecraft, ground systems, and user equipment.

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By Inside GNSS
SMC Signs CRADA to Certify SpaceX Falcon Launcher

SMC Signs CRADA to Certify SpaceX Falcon Launcher

The Space and Missile Systems Center (SMC) at Los Angeles Air Force Base, California, has signed a cooperative research and development agreement (CRADA) with Space Exploration Technologies Corp., better known as SpaceX, to certify the company’s Falcon launcher for future National Security Space (NSS) missions.

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By Dee Ann Divis
Inside GNSS Columnist Wins Journalism Award — Again
June 17, 2013

Inside GNSS Columnist Wins Journalism Award — Again

Dee Ann Divis, a contributing editor for Inside GNSS, has won the 2013 Dateline award for Washington Correspondent from the Society of Professional Journalists – DC Chapter for the second year in a row.

The award recognizes a series of stories published over the past year in Inside GNSS about a controversial British Ministry of Defense attempt to patent technology underlying new GNSS signals, including GPS and Galileo.

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By Inside GNSS
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CNAV Tests Begin on GPS L2C and L5 Signals
June 16, 2013

CNAV Tests Begin on GPS L2C and L5 Signals

The U.S. Air Force Space Command (AFSPC ) began testing modernized civil navigation (CNAV) message capabilities on the GPS L2C and L5 signals for the first time yesterday (June 15, 2013).

This first test period is scheduled to continue through July 1 (Julian Day 182), according to a Notice Advisory to NAVSTAR Users (NANU 2013034), although a tentative CNAV test plan shows the tests ending on June 29.

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By Inside GNSS
Air Force Proposes Dramatic Redesign for GPS Constellation
June 4, 2013

Air Force Proposes Dramatic Redesign for GPS Constellation

[Updated June 3, 2013] With the budget vise tightening, top Pentagon managers are readying some potentially dramatic changes to the GPS constellation — changes that promise to lower both the cost of the satellites and the expense of putting them into orbit.  

The first changes would be subtle and are linked to buying the next block of GPS III satellites — a decision that sources confirm will be made by the end of September.  

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By Dee Ann Divis
GNSS Hotspots | May 2013
May 28, 2013

GNSS Hotspots | May 2013

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. PESTS

State of California, USA
√ The California Agriculture department is using collective intelligence and GPS to “report a pest.” State residents can download the new CDFA smartphone app and use it to photograph and report bad bugs when they see ‘em. Those with iPhones can choose to send GPS coordinates for quick response to invasive pest emergencies.

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By Inside GNSS
Di Qiu: Opportunities of Signals

Di Qiu: Opportunities of Signals

Di Qiu at the site of her current employer

SIDEBAR: Di Qiu’s Compass Points

Landing all-weather aircraft safely in storms. Protecting sensitive data not only through encryption but based on the location at which it is being accessed. Ensuring that accurate and timely information reaches first responders responding to emergencies. 

Although still in the early part of her career, Di Qiu has already made significant contributions to these crucial applications of navigation technology. 

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By Inside GNSS
Calculating Time Offsets
May 23, 2013

Calculating Time Offsets

Q: How do you deal with timing differences between GNSSs? 

A: All GNSSs inherently depend on precise timekeeping to measure the satellite/receiver time of flight of signal propagation with sufficient accuracy to compute ranges/distances for multilateration calculations. Each GNSS ground segment therefore dedicates considerable effort to maintaining a highly stable atomic time scale as well as the corresponding offset to global standards such as UTC (Coordinated Universal Time).

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By Inside GNSS
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