Featured Stories

  • Happy 20th Anniversary, GPS!

    The Global Positioning System marks its 20th year of operation on Monday, April 27. Below is a timeline showing important milestones in the 20 years since the constellation reached full operational capability (FOC)... read more

  • 60 Minutes Segment on AFSPC Set for Sunday

    CBS’s 60 Minutes will air a special two-part segment on Air Force Space Command (AFSPC) this coming Sunday, April 26, reflecting a broad array of AFSPC missions — launch, satellite operations, missile warning, acquisition, and the... read more

  • FAA: GBAS Operational at Airports Worldwide

    Delta Airlines made a perfect Ground-Based Augmentation System (GBAS) Landing System (GLS) landing at Liberty Newark International Airport on Feb. 18, according to the Federal Aviation Administration’s SatNavNews newsletter. Delta now joins United... read more

  • Furuno Receiver Adopted for Use in Parrot Bebop Drone

    Furuno Electric Co.’s latest multi-GNSS receiver module, GN-87, has been adopted for the new quadcopter Bebop Drone, made by Parrot SA. Parrot develops advanced technology wireless products. The GN-87 can receive GPS, GLONASS, SBAS, and QZSS concurrently,... read more

  • Applanix Unveils Expanded Marine Product Portfolio

    Applanix has introduced an expanded portfolio of marine georeferencing and motion compensation solutions. Taking advantage of Applanix proprietary technology, the new line-up of marine products offers high-performance solutions to a broader cross-section of the hydrographic... read more

Opinions

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Galileo Update, Ionospheric Model Shared at ENC

April 23, 2015  - By 0 Comments

This year’s European Navigation Conference (April 7–10 in Bordeaux, France) got underway with “Good news from up there .…” Galileo’s seventh and eighth satellites launched successfully in late March, the... read more

From the Magazine

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FIGURE 9. Network used for the triple-frequency PPP study.

Innovation: Carrier-Phase Ambiguity Resolution

April 3, 2015  - By 0 Comments

Handling the Biases for Improved Triple-Frequency PPP Convergence
Precise point positioning (PPP) can be considered a viable tool in the kitbag of GPS positioning techniques. One precision aspect of PPP is its use of carrier-phase measurements rather than just pseudoranges. But there is a catch. Often many epochs of measurements are needed for a position solution to converge to a sufficiently high accuracy. In this month’s column, we look at how using measurements from three satellite frequencies rather than just two can help. read more

Video Spotlight

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The U.S. Air Force’s ninth GPS Block IIF satellite (GPS IIF-9) launched on March 25 aboard a United Launch Alliance (ULA) Delta IV rocket, which has been the workhorse of the GPS fleet for successful launches. ULA provided this video showing highlights of the launch.

Delta IV GPS IIF-9 Launch Highlights

April 2, 2015  - By 0 Comments

The U.S. Air Force’s ninth GPS Block IIF satellite (GPS IIF-9) launched on March 25 aboard a United Launch Alliance (ULA) Delta IV rocket, which has been the workhorse of the GPS fleet... read more

Product Showcase

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Exelis Launches Surveillance Tool for UAV Operators

April 24, 2015  - By 2 Comments

Exelis has launched its first airspace situational awareness tool designed specifically for unmanned aerial system (UAS) operations in the United States. Symphony RangeVue puts real-time Federal Aviation Administration (FAA) surveillance data, flexible background maps and weather information in the hands of UAS operators and... read more

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