Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design - Global Navigation Satellite Systems Engineering, Policy, and Design
November 24, 2021

Q: What is a factor graph?

Q: What is a factor graph?

A factor graph represents a global function of many variables as a product of local functions with smaller subsets of variables. This is not a method but a framework for modelling any system using its locality structure, that is, each variable is only dependent on a few other local variables and is independent of the others.

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By Inside GNSS
November 22, 2021

Evaluating LEO Constellations for Global Satellite Navigation Service

Low Earth Orbit (LEO) satellites are being launched regularly into space to create satellite constellations for a variety of purposes: communication, surveillance, providing Internet service and more. Global satellite navigation service is provided by satellites in higher orbits, mi-Earth orbit (MEO) roughly 25,000–27,00 kilometers above the Earth. Could satellites in LEO be used to provide global satellite navigation?

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By Inside GNSS
November 19, 2021

Inertial in the Field: Webinar Now Available On Demand

High standards for technology in the lab and in the factory are all very fine, but what matters most is how it works in industrial application. We take a close-up look at inertial measurement and inertial navigation in such real-world cases as
• oil and gas pipeline inspection,
• stabilization of optical camera platforms and
• autonomous cargo transport.

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By Inside GNSS
November 19, 2021

EGNOS SBAS Host Acquired by Telecom Company

Viasat Inc., a global communications company, will acquire Inmarsat, a provider of global mobile satellite communications services, in a transaction valued at $7.3 billion. Two of the four European Geostationary Navigation Overlay Service (EGNOS) broadcasting payloads, part of Europe’s GNSS, ride aboard Inmarsat satellites,

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By Inside GNSS
November 13, 2021

Embedded Timing Solution for Third-Party Hardware

ADVA introduced its OSA 5400 SyncModule  embedded timing solution, enabling technology suppliers to  integrate precise synchronization into their hardware. The M.2 form factor module offers equipment vendors a way to simply and cost-effectively add crucial timing capabilities with key functionality into their switches, routers, open compute servers and other IT devices.

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By Inside GNSS
MORE NEWS
November 13, 2021

Embedded Timing Solution for Third-Party Hardware

ADVA introduced its OSA 5400 SyncModule  embedded timing solution, enabling technology suppliers to  integrate precise synchronization into their hardware. The M.2 form factor module offers equipment vendors a way to simply and cost-effectively add crucial timing capabilities with key functionality into their switches, routers, open compute servers and other IT devices.

Read More >

By Inside GNSS
October 1, 2021

New GNSS Receiver Evaluation Software Released

u-blox announced a new GNSS evaluation software, u-center 2, running on Microsoft Windows and offering anyone working with tenth-generation u-blox GNSS technology a highly intuitive interface to configure GNSS products, evaluate their performance, improve the quality of their software,

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By Inside GNSS
September 30, 2021

Soldiers Test Newest Dismounted GPS Devices, Replacing DAGRs

The U.S. Army has put its replacement for the handheld Defense Advanced GPS Receiver (DAGR) under field testing in reconnaissance and fire missions in a variety of threat scenarios, to understand its performance in a realistic operational environment. The Dismounted Assured Positioning, Navigation, and Timing System (DAPS) could enable warfighters to better shoot, move and communicate in a GPS degraded environment.

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By Inside GNSS
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October 14, 2021

GNSS Expert Mark Psiaki Receives ION Kepler Award

The Institute of Navigation’s (ION) Satellite Division presented Dr. Mark Psiaki with its Johannes Kepler Award during the Institute of Navigation (ION) GNSS+ 2021 Conference. In addition to many other achievements, Psiaki co-authored the Inside GNSS cover story, “TRANSIT on Steroids: Doppler-Based GNSS Meets Large LEO Constellations”

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By Inside GNSS
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October 13, 2021

GNSS, Inertial to Keep Scooters Off Sidewalks

A maker of electric scooters has developed a GNSS- and inertial-based technology to keep its own products off of city sidewalks. Bird, a provider of environmentally friendly electric transportation, announced a smart sidewalk protection technology developed in partnership with u-blox.

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By Inside GNSS
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INDUSTRY VIEW

More Industry News
November 13, 2021

Embedded Timing Solution for Third-Party Hardware

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November 10, 2021

Honeywell Launches New Navigation Systems That Reduce Reliance on GNSS

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November 9, 2021

Spirent Federal Launches New Flex Power Capability

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GNSS TIMELINE

More Timelines
November 19, 2021

Inertial in the Field: Webinar Now Available On Demand

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September 1, 2021

Mission-Critical GNSS Training

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August 27, 2021

Joint Navigation Conference Brings 800+ to Exhibit Hall, Technical Sessions

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COLUMNS & EDITORIALS

September 21, 2021

Smartphone-based GNSS Positioning – Today and Tomorrow

This article reviews some of the recent results analyzing the feasibility of carrier-phase based positioning with smartphone data and highlights limitations largely arising due to the poor antenna quality. It shows how they might be overcome by antenna calibration or coupling to the phone’s inertial sensors. The goal is to perform a successful RTK positioning with the smartphone-quality data.

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By Inside GNSS
MORE COLUMNS & EDITORIALS