engineering Archives - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

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March 14, 2023

Denmark Planning New GNSS-Based Road User Charging Scheme

As part of its climate change policy aimed at reducing emissions by 70% by 2030, the Danish Government is rapidly moving towards the introduction of a GNSS-based road user charging (RUC) scheme for heavy goods vehicles (HGV). The intention is to introduce the new system starting in 2025, which will replace Denmark’s participation in the Eurovignette scheme, which applies to HGV weighing 12 tons or more.

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By Peter Gutierrez
AdhesiveEQ1
January 1, 2018

Spectral Transparent Adhesive

In the past two decades, satellite navigation systems have undergone great development. The development of new generations of global navigation satellite systems (GNSS), represented by GPS III, Galileo, and the BeiDou global system (BDS), is rapidly advancing.

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By Inside GNSS
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JOERGER-OPG-500PX.jpg

Towards Navigation Safety for Autonomous Cars

Figures 1 – 6, Table 1

There are many good reasons for getting excited about highly automated vehicles, or HAVs, which is the acronym used by the National Highway Traffic Safety Administration (NHTSA). HAVs can make driving more fuel- and time-efficient. They can significantly reduce traffic congestion and emissions by driving a precise speed, minimizing lane changes, and maintaining an exact distance to neighboring cars. They can also increase accessibility and mobility for disabled and elderly persons.

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By Inside GNSS
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GNSS Hotspots | April 2017
April 9, 2017

GNSS Hotspots | April 2017

One of 12 magnetograms recorded at Greenwich Observatory during the Great Geomagnetic Storm of 1859
1996 soccer game in the Midwest, (Rick Dikeman image)
Nouméa ground station after the flood
A pencil and a coffee cup show the size of NASA’s teeny tiny PhoneSat
Bonus Hotspot: Naro Tartaruga AUV
Pacific lamprey spawning (photo by Jeremy Monroe, Fresh Waters Illustrated)
“Return of the Bucentaurn to the Molo on Ascension Day”, by (Giovanni Antonio Canal) Canaletto
The U.S. Naval Observatory Alternate Master Clock at 2nd Space Operations Squadron, Schriever AFB in Colorado. This photo was taken in January, 2006 during the addition of a leap second. The USNO master clocks control GPS timing. They are accurate to within one second every 20 million years (Satellites are so picky! Humans, on the other hand, just want to know if we’re too late for lunch) USAF photo by A1C Jason Ridder.
Detail of Compass/ BeiDou2 system diagram
Hotspot 6: Beluga A300 600ST

1. ANTARCTIC OASIS
Antarctic Peninsula

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By Inside GNSS
GNSS Hotspots | January 2017
January 26, 2017

GNSS Hotspots | January 2017

One of 12 magnetograms recorded at Greenwich Observatory during the Great Geomagnetic Storm of 1859
1996 soccer game in the Midwest, (Rick Dikeman image)
Nouméa ground station after the flood
A pencil and a coffee cup show the size of NASA’s teeny tiny PhoneSat
Bonus Hotspot: Naro Tartaruga AUV
Pacific lamprey spawning (photo by Jeremy Monroe, Fresh Waters Illustrated)
“Return of the Bucentaurn to the Molo on Ascension Day”, by (Giovanni Antonio Canal) Canaletto
The U.S. Naval Observatory Alternate Master Clock at 2nd Space Operations Squadron, Schriever AFB in Colorado. This photo was taken in January, 2006 during the addition of a leap second. The USNO master clocks control GPS timing. They are accurate to within one second every 20 million years (Satellites are so picky! Humans, on the other hand, just want to know if we’re too late for lunch) USAF photo by A1C Jason Ridder.
Detail of Compass/ BeiDou2 system diagram
Hotspot 6: Beluga A300 600ST

Tracking illegal logging in Romania, autonomous mining, ancient calendars and Canadian cows

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By Inside GNSS
GNSS Sol Header_1.jpg
January 24, 2017

Is it possible to build a low-cost system to detect and locate a single GNSS jammer in near-real time?

Q: Is it possible to build a low-cost system to detect and locate a single GNSS jammer in near-real time?

A: GNSS jammers are an ongoing threat to the reliable use of GNSS. The problem of geolocating GNSS jammers can be addressed using a time-difference-of-arrival (TDOA) processing technique; however, this problem is quite different than geolocating jammers in other radio frequency systems. The two main differences are:

(1) No GNSS are available to use as a timing reference.

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By Inside GNSS
Spirent Announces New GNSS/GPS Testing Software
January 11, 2017

Spirent Announces New GNSS/GPS Testing Software

Spirent Communications’ PT TestBench.

Spirent Communications plc has announced the availability of PT TestBench — software designed to help technology, system and application developers build more accurate positioning functions more quickly. According to the company, the testing, analysis and reporting package automates testing of GPS and other global navigation satellite system (GNSS) receivers, so higher quality systems are brought to market faster and more reliably.

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By Inside GNSS
Air Force Continues to Test GPS III Satellite
December 27, 2016

Air Force Continues to Test GPS III Satellite

GPS III satellites in production. Image Source: Lockheed Martin.

The U.S. Air Force Space and Missile Systems Center (SMC) says it continues to work on GPS III ceramic capacitor testing and plans to have an updated launch schedule published late next month.

As Inside GNSS reported, the first GPS III satellite’s delivery, originally scheduled for August, was delayed by four months because of a Lockheed Martin subcontractor’s failure to test a ceramic capacitor.

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By Inside GNSS
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