Receivers Archives - Page 4 of 6 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

December 31, 2018

Ligado-Related Lawsuit Recommences Jan. 2

Though 2019 is brand new there are a host of GPS-related issues carrying over from 2018. This is one in a series of stories on satellite navigation issues on the table as the new year gets underway.

Virginia-based Ligado Networks and its predecessor firm LightSquared have been pushing since 2011 to change the rules governing how its spectrum can be used — a move essential to building a ground-based communications network that navigation experts insist will interfere with GPS receivers.

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By Dee Ann Divis
November 27, 2018

Septentrio’s AIM+ Designed to Overcome RF Interference on GNSS Signals

GNSS signals are exceptionally vulnerable to radio frequency interference which can happen by accident – think of an amateur radio operator broadcasting locally – but also occur intentionally by jamming and spoofing devices. No matter the application, the stakes can be extremely high when GNSS signals are lost due to radio interference.

This could mean a loss of position in cars, taxis, trucks or robotic vehicles, emergency response vehicles, but also construction machines, marine survey, drone inspection or even financial transaction synchronization, food delivery and ride-sharing services. Interference is not some new phenomenon but with the many markets —demanding reliable positioning — it has become a priority today.

For more than 15 years Septentrio has been developing and perfecting unique interference mitigation techniques to address interference threats on GNSS. The countermeasures employed include adaptive notch filtering, pulse blanking, and unique wide band interference mitigation. Together, these measures along with other analogue and digital advancements form Septentrio’s AIM+ (Advanced Interference Mitigation) technology.

The company has an informational brochure designed to address the ever-increasing number of connected devices operating across the increasingly crowded RF spectrum that can cause unintentional interference of GNSS signals. Maintaining position accuracy, reliability and availability is a serious challenge both today and tomorrow for GNSS receivers operating in this crowded RF interference environment. As more and more new applications for GNSS are developed, challenges grow as more complex forms of interference appear worldwide. Identifying and overcoming interference with the application of advanced mitigation technologies is critical to ensure the quality of GNSS measurements and positioning.

You can download  your free 20 pages GNSS interference brochure and find out how we can help you monitor and mitigate interference in your everyday work and life.

Septentrio has developed a sophisticated RF interference monitoring and mitigation system (AIM+). To mitigate the effects of narrow-band interference, 3 notch filters can be configured either in auto or manual mode. These notch filters effectively remove a narrow part of the RF spectrum around the interfering signal. The L2 band, being open for use by radio amateurs, is particularly vulnerable to this type of interference. The effects of wideband interference, both intentional and unintentional, can be mitigated by enabling the WBI mitigation system. The WBI system also reduces, more effectively than traditionally used pulse-blanking methods, the effects of pulsed interferers.

By Inside GNSS
November 16, 2018

Air Force to Battle Hostile Navigation Environments with High-Assurance GPS Receiver Technology from Rockwell Collins

Rockwell Collins has been selected by the U.S. Air Force Life Cycle Management Center (USAF AFLCMC) to provide its latest-generation Digital GPS Anti-Jam Receiver (DIGAR). With unsurpassed GPS threat protection levels, DIGAR receivers will bring highly-reliable navigation for U.S. Air National Guard and U.S. Air Force Reserve F-16 aircraft operating in contested, electromagnetic environments, according to Rockwell Collins. This will be the first combat fighter aircraft to be installed with the latest version of the receiver.

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By Inside GNSS
October 24, 2018

Power Supply Not Needed for ViaLite’s RF Over Fiber Module

By allowing the customer’s own equipment to power the RF over fiber receiver, ViaLite Communications’ new RF Connector is designed to further simplify the installation of ViaLiteHDRF over fiber links. Available on the Blue OEM for applications in the Broadcast and GPS/GNSS sectors, the connector removes the need to use a separate power supply unit (PSU).

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By Inside GNSS
October 16, 2018

Topcon Introduces Versatile Addition to HiPer Integrated Receiver Series at INTERGEO

Topcon Positioning Group announced today at INTERGEO the latest addition to its HiPer series of integrated receivers — the HiPer VR is designed to provide a versatile solution with the most advanced GNSS technology available.

“The HiPer VR is packed with the most powerful GNSS technology in a housing built to withstand the harshest field environments,” said Alok Srivastava, director of GNSS Product Management. “The Topcon advanced GNSS chipset with Universal Tracking Channels™ technology allows the HiPer VR to automatically track signals from all available constellations — including GPS, GLONASS, Galileo, BeiDou, IRNSS (NavIC), QZSS, SBAS — now and into the future.”

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By Inside GNSS
October 11, 2018

CORE Corp. Expands Line of GNSS Receivers

Tokyo, Japan-based CORE Corporation recently exhibited a line of customizable multi-GNSS receivers and Quasi-Zenith Satellite System (QZSS) centimeter-level receivers at ION GNSS+. Customizable multi-GNSS receiver means users build up with CORE’s circuit design, FGPA and software program, not using any commercial or completed GNSS chips.

The company’s Cohac infinite repetition L6 decoder is designed to deliver positioning centimeter accuracy, and case studies indicate successful results in agricultural machinery, autos, railroad and aviation.

Looking ahead to QZSS service startup in November,CORE has released the new QZSS centimeter-level receiver supporting both CLAS and MADOCA. In addition to GNSS receivers, the company develops total GNSS solutions by fusing with Internet of Things (IoT), the cloud and applications to enable various possibilities for location, automotive, agriculture and train customers.

By Inside GNSS
September 17, 2018

NovAtel Introduces SMART7 Family of Smart Antennas Designed for Agricultural Applications

NovAtel today launched its new SMART7 family of SMART antennas, adding SPAN technology, future-ready Global Navigation Satellite System (GNSS), Wi-Fi and Internet Protocol (IP) connectivity, optimal tracking performance and TerraStar-C PRO corrections to its availability, accuracy, and reliability trusted by major equipment manufacturers for demanding applications like precision agriculture and machine control.

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By Inside GNSS
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