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GPS

July 31, 2020

Senator Takes a Stand for GPS

U.S. Sen. Jim Inhofe (R-Okla.), chairman of the Senate Armed Services Committee, announced that he has placed a hold on the nomination of Mike O’Rielly to a third term as Federal Communications Commision (FCC) Commissioner until O’Rielly publicly commits to vote to overturn the current Ligado Order.

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By Inside GNSS

Cyber Attack Disables Private Pilots, GPS Fitness Users

Hackers exposed another vulnerable chink in U.S. national infrastructure over the weekend, in an attack on GPS manufacturer Garmin that began late Thursday, July 23.  Although the cybersecurity strike, apparently aimed at extorting a ransom, did not explicitly include the GPS signal, it disabled two large GPS user communities: general aviation (private pilots and some larger commercial flight operators) and fitness enthusiasts. Both found their Garmin devices and apps unresponsive.

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By Inside GNSS
June 26, 2020

New Lobbying Coalition Coalesces around Ligado Opposition

Five organizations representing thousands of companies and millions of Americans have launched a new coalition to protect end users of GPS, following the Federal Communications Commission’s (FCC’s) April 22 decision to permit Ligado Networks to operate a terrestrial wireless network using its satellite spectrum.

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By Inside GNSS
June 23, 2020

Update to GNSS Firewall Software Strengthens Critical Infrastructure Protection

Microchip Technology Inc. has released a software update for its BlueSky GNSS Firewall product, providing a higher level of resiliency against GPS vulnerabilities for systems dependent on GPS signal reception. Such critical infrastructure systems include power utilities, financial services, mobile networks and transportation, all relying on GPS-delivered timing to ensure ongoing operations.

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By Inside GNSS
June 7, 2020

LEO Successor to GNSS Comes Knocking

A group of Stanford Ph.D. and Masters graduates, with work experience among them at SpaceX, Ford Motor Systems, Blue Origin, Booz Allen Hamilton and other firms, has launched a start-up to start up a low-Earth orbit successor to GPS and other GNSS. The existing services, they say, are not up to the challenges of autonomy. They founded Xona Space Systems to supplant the venerable satnav systems.

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By Inside GNSS
June 1, 2020

New GPS Performance Document Gives Glimpses of L2C, L5, Expanded Constellation

The U.S. Air Force updated the GPS Standard Positioning System (SPS) Performance Standard (PS) in mid-April, 2020, the first new Performance Standard document since 2008. It includes mention of and  pre-Initial Operating Capability (IOC) performance standards for the new civil GPS signals L2C and L5 for the first time. In another new feature, the document mentions “expanded capabilities which allow the total size of operational constellation to grow beyond the previous maximum of 32 Navstar satellites” for “more robust constellation availability to enhance the overall SPS SIS performance.”

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By Inside GNSS
May 21, 2020

The New Flex Power Mode: From GPS IIR-M and IIF Satellites with Extended Coverage Area

GPS satellites usually transmit their signals with constant power. However, a so-called “Flex Power” is foreseen to increase the strength of individual signals to better fulfill operational constraints. Flex power operations can be detected in carrier-to-noise density ratio (C/N0) observations provided by GNSS receivers of the global tracking network of the International GNSS Service (IGS).

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By Peter Steigenberger, et al.
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