A: System Categories Archives - Page 14 of 199 - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

September 21, 2021

GNSS Foresight Heralds New Direction for Aviation, UAVs, Air Taxis and Entire PNT Industry

Spirent Communications has launched GNSS Foresight, a cloud-based solution that empowers GNSS users with advance knowledge about the strength and reliability of GNSS signals in exact locations within their operational areas. The service will have early application for aviation, unmanned and autonomous platforms, but Spirent VP Jeremy Bennington told Inside GNSS that its potential is far wider.

By Inside GNSS

September 20, 2021

New Multipath Rejection Method: Multicorrelator Receiver with Extended Kalman Filter

A new method for multipath rejection employs a multicorrelator-based GNSS receiver with an extended Kalman Filter (EKF) as an iterative solver, replacing the conventional delay locked loop (DLL) code tracking. The technique significantly reduces the positioning error and has low complexity. It can therefore be implemented in a real-time processing environment.

By Inside GNSS

September 16, 2021

Army Research Lab Funds Project for Ground Vehicle Navigation in GPS-denied Terrain with Computer Vision and AI

The U.S. Army Research Lab awarded the University of Central Florida a $4.5 million grant to develop a smart, computer vision-based navigation system for when GPS is unavailable or jammed.

By Inside GNSS

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EGNOS Contract for Next-Generation, Dual-Frequency European SBAS Signed

The EU Agency for Space Programme (EUSPA) awarded Thales Alenia Space a contract to provide new capabilities to the European Geostationary Navigation Overlay Service (EGNOS) satellite-based augmentation system.

By Inside GNSS

Figure 1 – Geographical regions of the ionosphere copy

To what degree does the greater ionospheric activity in equatorial regions degrade GNSS positioning? How does this degradation occur? What mitigations are available?

Ionospheric delay is the largest source of range error for GPS Standard Positioning Service (SPS) users, at least during local daytime when solar emissions enhance these delays.

By Inside GNSS

September 15, 2021

EGNOS a Safe, Efficient Locator for Europe’s Trains

Europe’s Certifiable Localisation Unit with GNSS in the railway environment (CLUG) has moved the continent towards a cost-efficient train tracking solution based on satellite technology together with other sensors and data.

By Inside GNSS

Underwater Navigation System with M-Code Emerges

Collins Aerospace announced its Military Underwater Navigation System with M-Code (MUNS-M), a handheld diver navigation system that provides the diver with precise position and includes secure anti-jamming capabilities during deep-sea missions.

By Inside GNSS

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September 14, 2021

Washington View: Big Wheels Keep On Turning – Rolling On The River To 5G

Ligado Networks had an early-year win in the form of a Federal Communications Commission denial of the National Telecommunications and Information Administration Stay Petition involving Ligado’s license for a terrestrial service in the mobile satellite services L-band. The company continues to roll toward deployment of a nationwide 5G network. While filings trickle in from the private sector, the feds work quietly behind the scenes on Congressional due-outs. In short, wheels big and small keep churning down the river to 5G.

GNSS SBAS and Earth Observation Satellites Help Improve Farm Soil Drainage and Variable Rate Fertilization

Using in situ sensors, GNSS corrections and satellite remote sensing, it is possible to obtain information on soil anomalies, enabling farmers to take corrective actions in the field. This information is given through a pre-set field map which identifies areas needing a specific treatment, leading farmers to an improved cost-benefit ration for their agricultural crops.

By Inside GNSS

Italy and Qascom to Land First GNSS Receiver on the Moon

A 2023 lander in the moon’s Mare Crisium will carry the first GNSS receiver to that planet’s surface: the Navigation Early Investigation on Lunar surface (NEIL) receiver with software-defined radio (SDR) technology. The receiver will spring from agreements between the U.S. National Aeronautics and Space Administration (NASA), the Italian Space Agency (ASI) and the Italian firm Qascom srl.

By Inside GNSS

Are Elliptical Galileo Satellites Usable for RTK?

Galileo satellites 5 and 6 (E18, E14) were declared unusable in February 2021 after reports indicating repeatable daily problems with RTK. This article explores the possible impact of deviant elliptical orbits on the performance of RTK and finds that there is no reason to expect any anomalies caused by high orbit eccentricity per se. Thus there is no reason to declare the satellites unhealthy.

By Inside GNSS

September 8, 2021

Three GPS III Space Vehicles Ready, Willing and Able; One Named for Hidden Figure Katherine Johnson

The U.S. Space Force’s Space Systems Command recently declared the eighth GPS III satellite as “Available for Launch.” This marks the third GPS III satellite to be declared available for launch in the past three months.

By Inside GNSS

Atomic Clocks Selected for Galileo’s Second Generation

Orolia received two contracts to provide atomic clocks for the first 12 satellites of the Galileo Second Generation System (G2S).

By Inside GNSS

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A: System Categories

First OSNMA Simulation Tools for Galileo Signal Authentication No...

Enhanced BeiDou Short Message Service Displayed at International ...

GNSS Foresight Heralds New Direction for Aviation, UAVs, Air Taxis and Entire PNT Industry

New Multipath Rejection Method: Multicorrelator Receiver with Extended Kalman Filter

Army Research Lab Funds Project for Ground Vehicle Navigation in GPS-denied Terrain with Computer Vision and AI

EGNOS Contract for Next-Generation, Dual-Frequency European SBAS Signed

To what degree does the greater ionospheric activity in equatorial regions degrade GNSS positioning? How does this degradation occur? What mitigations are available?

EGNOS a Safe, Efficient Locator for Europe’s Trains

Underwater Navigation System with M-Code Emerges

Washington View: Big Wheels Keep On Turning – Rolling On The River To 5G

GNSS SBAS and Earth Observation Satellites Help Improve Farm Soil Drainage and Variable Rate Fertilization

Italy and Qascom to Land First GNSS Receiver on the Moon

Are Elliptical Galileo Satellites Usable for RTK?

Three GPS III Space Vehicles Ready, Willing and Able; One Named for Hidden Figure Katherine Johnson

Atomic Clocks Selected for Galileo’s Second Generation