Difference between revisions of "Time"

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* [http://ieeexplore.ieee.org/document/5608862 Artificial intelligence in GPS navigation systems | Jeffrey L. Duffany]
 
* [http://ieeexplore.ieee.org/document/5608862 Artificial intelligence in GPS navigation systems | Jeffrey L. Duffany]
 
* RoadTagger: [http://newatlas.com/technology/gps-system-ai-upgrade/ GPS system upgrade utilizes AI to make sure you're in the right lane | David Nield - New Atlas]  ...[http://www.inceptivemind.com/artificial-intelligence-roadtagger-digital-maps-improve-gps-navigation/11525/ Artificial intelligence to update digital maps and improve GPS navigation | Amit Malewar - InceptiveMind]
 
* RoadTagger: [http://newatlas.com/technology/gps-system-ai-upgrade/ GPS system upgrade utilizes AI to make sure you're in the right lane | David Nield - New Atlas]  ...[http://www.inceptivemind.com/artificial-intelligence-roadtagger-digital-maps-improve-gps-navigation/11525/ Artificial intelligence to update digital maps and improve GPS navigation | Amit Malewar - InceptiveMind]
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* [http://www.gps.gov/ GPS.gov]
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* [http://www.gps.gov/ GPS.gov]  ...[http://www.gps.gov/applications/timing/ Timing]
 
* [http://insidegnss.com/ Inside GNSS] ...Global Navigation Satellite Systems
 
* [http://insidegnss.com/ Inside GNSS] ...Global Navigation Satellite Systems
 
* [http://www.space.com/19794-navstar.html Navstar | Space.com]  ...is a network of U.S. satellites that provide GPS services
 
* [http://www.space.com/19794-navstar.html Navstar | Space.com]  ...is a network of U.S. satellites that provide GPS services
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== <span id="Jamming and Spoofing"></span>Jamming and Spoofing ==
 
== <span id="Jamming and Spoofing"></span>Jamming and Spoofing ==

Revision as of 10:56, 27 June 2021

YouTube search... ...Google search


Whenever we have developed better clocks, we’ve learned something new about the world.
- Alexander Smith New Time Dilation Phenomenon Revealed: Timekeeping Theory Combines Quantum Clocks and Einstein’s Relativity - Dartmouth College


The Earth's rotation is so accurate it varies only in milliseconds ...do you feel the Earth rotation slowing down?


DARPA Making Progress on Miniaturized Atomic Clocks for Future PNT Applications | US Defense Advanced Research Projects Agency (DARPA)

TIME AI
Robert Edward Grant Crown Sterling http://timeai.io/

The Clock That Changed the World (BBC History of the World)
leedsmuseums Of international scientific importance, the Harrison Clock is only one of only three precision pendulum clocks made by John Harrison and instrumental in solving the Longitude problem. The clock was made in 1727 with an amazing fully working wooden mechanism. Plans are in place to display it as part of an interpretive display at Leeds City Museum. With thanks to the BBC

A Brief History of Timekeeping
SciShow It’s time for another leap second! Join SciShow as we celebrate by exploring the long and strange history of timekeeping. Hosted by: Michael Aranda Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Justin Lentz, David Campos, John Szymakowski, Peso255, Jeremy Peng, Avi Yaschin, and Fatima Iqbal. Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: http://www.patreon.com/scishow

TimeLine - A Brief Introduction To The History Of Timekeeping Devices
SpotImageryLtd An animated documentary about how time was measured in the past, and how we measure it in present day.

This 3D Quantum Gas Clock Could Redefine Time
Seeker Time may be a human construct but that hasn't stopped physicists from perfecting it. Read More: JILA’s 3-D Quantum Gas Atomic Clock Offers New Dimensions in Measurement http://www.nist.gov/news-events/news... “JILA physicists have created an entirely new design for an atomic clock, in which strontium atoms are packed into a tiny three-dimensional (3-D) cube at 1,000 times the density of previous one-dimensional (1-D) clocks. In doing so, they are the first to harness the ultra-controlled behavior of a so-called “quantum gas” to make a practical measurement device.” Jun Ye: Let There Be Light (and Thus, Time) http://www.youtube.com/watch?v=bbBmk... Dr. Jun Ye, professor of physics at the University of Colorado at Boulder and a fellow of both the National Institute of Standards and Technology and JILA, explains how lasers are used to manipulate atoms inside and out for ultra-precise clocks. Ultra-Accurate Clocks Lead Search for New Laws of Physics http://www.quantamagazine.org/ultra-.. Atomic clocks are letting physicists tighten the lasso around elusive phenomena such as dark matter. Sign Up For The Seeker Newsletter Here - http://bit.ly/1UO1PxI Seeker inspires us to see the world through the lens of science and evokes a sense of curiosity, optimism and adventure. Visit the Seeker website http://www.seeker.com/

David Wineland Public Lecture: Keeping Better Time - The Era of Optical Atomic Clocks
Perimeter Institute for Theoretical Physics David Wineland, 2012 Nobel Laureate in Physics, will explore the theoretical and technological know-how needed to build ultra-precise atomic clocks during his Perimeter Institute Public Lecture on Wednesday, Nov. 4, 2015. Find information about future Perimeter institute Public Lectures here: http://ow.ly/UiOr5

A brief History of the Calendar and Time Keeping
School of Business and Economics Tuesday 23 February, 20h00 • Aula Minderbroedersberg 4-6 • Dr. Donna Carroll, Lecturer of Physics, Maastricht University How many times a day do you check your calendar or look at your clock? These days our lives are driven by deadlines, schedules and timetables. Time and its many divisions (hours, days, weeks, months, and years) have completely shaped our lives and yet we seldom take the time to consider how these concepts arose. The calendar is inextricably linked to the mechanics of our solar system, and the way in which we describe our periods of time has arisen from ancient speculation in astronomy, mathematics and religion. In this talk, Donna Carroll will provide a brief history of our calendar and an introduction to time measurement. A fascinating field where astronomy, astrology, mathematics, politics, agriculture, superstition and religion all come together. For more information please visit: SG Maastricht: http://www.sg.unimaas.nl/ Talkin'Business: http://www.talkinbusiness.nl/ University Maastricht: http://www.maastrichtuniversity.nl/

WSU: Space, Time, and Einstein with Brian Greene
World Science Festival Join Brian Greene, acclaimed physicist and author, on a wild ride into the mind of Albert Einstein, revealing deep aspects of the world that defy everyday experience. Using a visually rich canvas of animations, Greene leads you through all the startling conclusions of special relativity, from time travel to space warps to E = mc2. In the span of 2+ hours, this short master class will change your conception of reality. This is a mostly non-mathematical version of the WSU Master Class “Special Relativity with Brian Greene.” http://youtu.be/XFV2feKDK9E #WorldSciU The Special Theory of Relativity - 00:05 Speed - 00:05:50 The Speed of Light - 00:18:23 Relativity of Simultaneity - 00:27:42 Time in Motion - 00:37:42 How Fast Does Time Slow? - 00:47:49 Time Dilation: Experimental Evidence - 01:05:31 The Reality of Past, Present, and Future - 01:14:37 Time Dilation: Intuitive Explanation - 01:28:38 Motion's Effect on Space - 01:32:34 The Pole in the Barn: Quantitative Details - 01:49:48 The Twin Paradox - 02:10:39 Implications for Mass - 02:19:17 Special Relativity - 02:29:06

Timing in Mission-Critical Systems
GPS World You’ll hear from our expert speaker panel about real-life timing challenges in mission-critical applications, such as satellite and military communications, test ranges and radar; time transfer accuracy and stability via GPS or PTP; and what technologies to look for in your next-generation instrument class clock to cost-effectively deliver accurate and stable time and frequency signal types, signal output flexibility and robust security. Speakers: Paul Skoog, Microsemi Corporation; Scott Williams, G.L. Williams Associates; and James L. Wright, Range Generation Next Original Broadcast Date: March 31, 2016

The Importance of Time Synchronization - I&C Short Tips
Affinity Energy Learn more at http://affinityenergy.com - Time synchronization is overlooked in terms of specification of applications in terms of hardware, proper controls, and data acquisition. Here's an example of why time synchronization is so important in a double ended substation.

Positioning, Navigation and Timing (PNT)

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Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another.[1] The field of navigation includes four general categories: land navigation, marine navigation, aeronautic navigation, and space navigation. Navigation | Wikipedia

Navigation Systems
ERAU SpecialVFR

How did Planes Fly Before GPS?
How did Planes Fly Before GPS?: The Wright Brothers first took to the skies in 1903 but GPS wasn't publicly available until 1983, so how did planes traverse the world in those 80 years? From celestial navigation to dead reckoning, to the firsts forms of radio telemetry (like adock range stations and LORAN) we'll be discussing them all in this video. Discord: http://discord.gg/DUvyS8n Amazon Affiliate Link*: http://amzn.to/3kNTHhK

PNT Requirements Definition – Some Principles with John Pottle
Royal Institute of Navigation. Presenter: John Pottle, Director of the Royal Institute of Navigation

Hosted PNT as a Service (PNTaaS)
NAVSYS Corporation. The threat to GPS drives demand for a back-up position, navigation, and timing (PNT) solution that can operate in the event of denial of service to the GPS satellite signals. The military is dependent on PNT for their warfighting operations, and national critical infrastructure is also reliant on GPS for positioning and timing. In this video, we describe our PNT as a Service (PNTaaS) concept that will leverage capabilities already existing on certain commercial broadband internet satellite constellations to allow their signals to be used for PNT.

Global Positioning System (GPS)

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GPS receivers that use the L5 band can pinpoint to within 30 centimeters or 11.8 inches. The GPS concept is based on time and the known position of GPS specialized satellites. The satellites carry very stable atomic clocks that are synchronized with one another and with the ground clocks. Any drift from time maintained on the ground is corrected daily. In the same manner, the satellite locations are known with great precision. GPS receivers have clocks as well, but they are less stable and less precise. Each GPS satellite continuously transmits a radio signal containing the current time and data about its position. Since the speed of radio waves is constant and independent of the satellite speed, the time delay between when the satellite transmits a signal and the receiver receives it is proportional to the distance from the satellite to the receiver. A GPS receiver monitors multiple satellites and solves equations to determine the precise position of the receiver and its deviation from true time. At a minimum, four satellites must be in view of the receiver for it to compute four unknown quantities (three position coordinates and clock deviation from satellite time). Global Positioning System | Wikipedia

Why The US Military Made GPS Free-To-Use
Create a free account on SimScale here: https://goo.gl/qByVRB Find all recordings of the Drone Design Workshop here: https://goo.gl/hSh5nA Listen to our new podcast at: Showmakers YouTube channel at: https://goo.gl/Ks1WMp

Satellite Navigation Systems Overview with John Pottle
Royal Institute of Navigation. John Pottle, Director of the Royal Institute of Navigation, will put into context what the hundreds of navigation satellites in space are all for and how they work together. This webinar will explain the similarities and differences between global and regional satellite navigation systems, how they are co-ordinated, and by whom. The space-based augmentation systems will also be covered: what are these and how do they help? *During the webinar Q&A there was a question about whether or not GNSS could be used for moon missions - please see: Website: http://rin.org.uk/

GPS, How does it work? | ICT #12
GPS has already become an integral part of our lives, and you can see a few useful applications from these examples. GPS is really an interesting technology. It uses a system of 24 satellites continuously orbiting the earth, and requires at least four satellites to track your location; it uses an atomic clock, and the time error of your mobile phone is also a matter of great concern. Moreover, Albert Einstein’s theory of relativity plays an important role in GPS technology, finally, a real-life application for the theory of relativity! Let’s put aside all these complications and understand the technology of GPS in a step by step and logical manner. Be a Learn Engineering supporter or contributor: http://www.youtube.com/channel/UCqZQ...

MIT's AI System helps to improve GPS navigation in places with limited map data | RoadTagger
Rajamanickam Antonimuthu An AI model developed at MIT and Qatar Computing Research Institute uses only satellite imagery to automatically tag road features in digital maps. This innovation could improve GPS navigation, especially in countries with limited map data.

GPS vs AI: The Challenges of Losing Satellite Signal | Roborace
How do trees affect satellite and GPS acquisition during a Roborace test run? #Education #Roborace #AutonomousVehicles Trees have a detrimental effect on the GPS and Satellite system for the DevBot 2.0, as it is one of the most important factors for autonomous racing. Roborace is the world’s first competition for human + machine teams, using both self-driving and manually-controlled cars. Race formats will feature new forms of immersive entertainment to engage the next generation of racing fans. Through sport, innovations in machine-driven technologies will be accelerated. Roborace will redefine the way you think about autonomous technology. To be a part of our autonomous journey, subscribe to our channel: http://goo.gl/TNbPAB

Why GPS wouldn't work if we didn't know about relativity
One technology you probably use everyday that wouldn't work if it wasn't for Einstein's theories is GPS, or the global positioning system.

A9G GPS & GPRS Module Tutorial | Ai-Thinker | AT Commands
PCBWAY: http://www.pcbway.com/ Wanna help us out? GitHub Consider donating any amount: http://www.paypal.me/akarsh98 CETech@FB: http://www.facebook.com/CETech4u/ Our email: akarshagarwal98@gmail.com Track: Raiko - Revenger [NCS Release] Music provided by NoCopyrightSounds. Watch: http://youtu.be/Vj_V0RfdTSY Free Download / Stream: http://ncs.io/Revenger

AWS re:Invent 2017: GPS: Industry 4.0: AI and the Future of Manufacturing (GPSTEC326)
Advances in artificial intelligence, machine learning, and deep learning, along with the rapid deployment of Internet of Things (IoT) devices, are changing how physical products are designed and built. In this session, learn how Amazon AWS partners Siemens and Autodesk use AWS to enhance the design process and how they're incorporating AWS services into their products and smart factories. We explore how these trends impact the future of design and manufacturing.

Deep-Space Positioning System (DPS)

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Space Is Hard | There Is No GPS in Space
There is no mapping app for deep space, at least not yet. If we're going to explore there we'll need new navigation tools. Here's how NASA is going to keep its rockets on target. Still haven’t subscribed to WIRED on YouTube? http://wrd.cm/15fP7B7 CONNECT WITH WIRED Web: http://wired.com

Jamming and Spoofing

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2019-06-19_The History of GPS Spoofing
Incose Chesapeake Mr Dana Goward discussed the development of Global Positioning System (GPS) spoofing from a fiction account in film to being an everyday problem.

How to fool a GPS - Todd Humphreys
TED-Ed Todd Humphreys forecasts the near-future of geolocation when millimeter-accurate GPS "dots" will enable you to find pin-point locations, index-search your physical possessions ... or to track people without their knowledge. And the response to the sinister side of this technology may have unintended consequences of its own. (Filmed at TEDxAustin.) Talk by Todd Humphreys.

Orolia Presents: GPS World Webinar – Resilient PNT for a 5G World
Panelists will discuss key factors for the successful implementation of 5G technology for 5G infrastructures, automotive, and mission critical applications: 

- Testing requirements needed to ensure consistent operations
- Resilient Positioning, Navigation and Timing (PNT) technologies that can help ensure accurate, continuous operations for critical applications during interference or signal loss.

Which is the bigger problem? Risk assessment for PNT with Dana Goward
This webinar is part of the Resilient Positioning Navigation and Timing Seminar Series. Find out more about this series at: https://rin.org.uk/events/EventDetail... Presenter: Dana Goward, President & Director, Resilient Navigation and Timing Foundation

Assured-Positioning, Navigation and Timing (A-PNT)

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Like the GPS units in many automobiles today, a simple receiver and some processing power is all that is needed for accurate navigation. But, what if the GPS satellites suddenly became unavailable due to malfunction, enemy action or simple interference, such as driving into a tunnel? Unavailability of GPS would be inconvenient for drivers on the road, but could be disastrous for military missions. Extreme Miniaturization: Seven Devices, One Chip to Navigate without GPS | US Defense Advanced Research Projects Agency (DARPA)

National Positioning, Navigation, and Timing (PNT) Architecture | U.S. Department of Transportation


System Performance and Resilience or: What could possibly go wrong? with Prof Marek Ziebart
Royal Institute of Navigation. Presenter: Prof Marek Ziebart, Director, Space Geodesy and Navigation Group, University College London Website: http://rin.org.uk/

GPS/GNSS Spoofing and How To Detect It
GPSPATRON GNSS Interference Issues What is GNSS Spoofing? Spoofing Detection Solution In this video, we describe GNSS spoofing/jamming and how to detect it. GPSPATRON is facilitated to protect GNSS-dependent infrastructure against spoofing/jamming or other GNSS signals anomalies that cause time/position accuracy degradation More about GNSS spoofing detection: http://gpspatron.com/detecting-gnss-... Links: http://rntfnd.org/2018/04/24/5-gps-s... http://www.c4reports.org/aboveusonly... http://www.gpsworld.com/ http://insidegnss.com/ http://www.gps.gov/

When GNSS fails, what will you do? - MarRINav!
Royal Institute of Navigation. This webinar, called 'When GNSS fails, what will you do? - MarRINav! ' features presentations and comments form Jonathan Turner (NLA Int.), Dr Alan Grant (GLA), and Dana Goward (RNTF). The webinar provides analysis and insights from Phase 1 of the Maritime Resilience and Integrity of Navigation (MarRINav) project. To download the full transcript of Jonathan's presentation please follow this link: https://rin.org.uk/resource/resmgr/fi... Many thanks to all co-sponsors of this webinar: Resilient Navigation and Timing Foundation, Institute of Navigation, GPS World, The Maritime Executive, and of course the MarRINav project. Website: http://rin.org.uk/

The Coming Revolution in MEMS Gyroscopes and MEMS Inertial Sensors
Wireless Integrated MicroSensing & Systems - WIMS2 Relevant for automotive robotic drone wearable applications.

Enabling the Next Generation of GPS Technology with Supercorrelation with Dr Ramsey Faragher
Royal Institute of Navigation. Focal Point Positioning have developed a new method for processing GNSS radio signals called Supercorrelation which dramatically improves the performance of the earliest stage of radio processing. The software update removes multipath interference at the correlator level, and provides the ability to determine signal arrival angle without adding any new hardware to a standard GNSS device. In this webinar Dr Ramsey Faragher, Founder/CEO of FocalPoint will explain how the technology works, will cover some of the challenges that FocalPoint have overcome in deploying it on very low cost platforms, and will show off the new capabilities that it unlocks. Website: http://rin.org.uk/

AgilLOC Global Navigation Satellite System (GNSS) Anti-Jamming and Spoofing Capability
AgilLOC Antenna Element Compact (AEC) & Resilient Time Source (RTS) provide assured access to Position, Navigation and Timing (PNT) information for mission-critical systems. AEC provides GNSS anti-jam capability under denied environment through adaptive nulling of interference sources. RTS provides add-on GNSS anti-spoof capability and timing resiliency to ensure the integrity of the GNSS.

GRCon20 - Software defined radio based Global Navigation Satellite System real time spoofing....
Software defined radio based Global Navigation Satellite System real time spoofing detection and cancellation Presented by Jean-Michel Friedt,, D. Rabus and G. Goavec-Merou at GNU Radio Conference 2020 http://gnuradio.org/grcon20 Global Navigation Satellite Systems (GNSS) -- most significantly the Global Positioning System (GPS) -- have become ubiquitous to most daily activities, from positioning and navigation to long range time synchronization or distributed energy production ("smart grid"). While initially developed as a military system hardly accessible to civilians, the advent of Software Defined Radio jamming and spoofing capabilities emphasize the low security of GNSS weak signals emitted from satellites orbiting the Earth 20000 km away. While a properly spoofing signal cannot be detected after a consumer-grade receiver has decoded the radiofrequency signal, addressing at the radiofrequency wave level the signal integrity provides the solution of identifying spoofing with all satellites appearing at the same direction of arrival. This classical beamforming analysis -- Controlled Reception Pattern Antenna (CRPA) with multiple antenna reception and phase analysis -- is demonstrated using commercial, off the shelf software defined radio platform receivers (Ettus Research B210) running the real-time GNSS decoder gnss-sdr based on GNU Radio running on embedded boards such as the Raspberry Pi4.

PULP-DroNet -- Autonomous Artificial Intelligence-powered Nano-Drone
PULP-DroNet is a deep learning-powered visual navigation engine that enables autonomous navigation of a pocket-size quadrotor in a previously unseen environment. Thanks to PULP-DroNet the nano-drone can explore the environment, avoiding collisions also with dynamic obstacles, in complete autonomy -- no human operator, no ad-hoc external signals, and no remote laptop! This means that all the complex computations are done directly aboard the vehicle and very fast. The visual navigation engine is composed of both a software and a hardware part. The former is based on the previous DroNet [1] project developed by the RPG [2] from the University of Zürich (UZH). DroNet is a shallow convolutional neural network (CNN) which has been used to control a standard-size quadrotor in a set of environments via remote computation. The hardware soul of PULP-DroNet is embodied by the PULP-Shield an ultra-low power visual navigation module featuring a Parallel Ultra-Low-Power (PULP) GAP8 System-on-Chip (SoC) from GreenWaves Technologies [3], an ultra-low power camera, and off-chip Flash/DRAM memory; the shield is designed as a pluggable PCB for the Crazyflie 2.0 [4] nano-drone. Then, we developed a general methodology for deploying state-of-the-art deep learning algorithms on top of ultra-low power embedded computation nodes, like a miniaturized drone. Our novel methodology allowed us first to deploy DroNet on the PULP-Shield, and then demonstrating how it enables the execution the CNN on board the CrazyFlie 2.0 within only 64-284mW and with a throughput of 6-18 frame-per-second! Finally, we field-prove our methodology presenting a closed-loop fully working demonstration of vision-driven autonomous navigation relying only on onboard resources, and within an ultra-low power budget. We release here, as open source, all our code, hardware designs, datasets, and trained networks. Reference: D. Palossi, F. Conti, and L. Benini An Open Source and Open Hardware Deep Learning-powered Visual Navigation Engine for Autonomous Nano-UAVs Preprint: https://arxiv.org/abs/1905.04166 PULP-Platform Project Webpage: https://www.pulp-platform.org/

GPS Spoofing and Jamming: Learn how to protect against threats to GNSS systems
Steatite

Securing Positioning & Timing 7: Improving Performance by Augmenting GPS/GNSS
Royal Institute of Navigation. The seventh, and final, of a series of webinars from the Securing Positioning & Timing short course. This webinar covers Improving Performance by Augmenting GPS/GNSS. Presented by Prof Terry Moore. Supported by the UK Space Agency. Website: http://rin.org.uk/

Assess performance & reduce risks across a multisensor, multi-system integration with Peter Rylands
Royal Institute of Navigation. Presenter: Peter Rylands, Product Manager, Oxford Technical Solutions Ltd

Resilient PNT for Unmanned Systems
Orolia. Demand for unmanned systems is growing exponentially across defense and civil/commercial organizations, for applications ranging from military missions and intelligence surveillance to border security and precision agriculture.

Resilient Positioning, Navigation and Timing (PNT) data and GPS/GNSS signals are critical for unmanned systems in order to successfully pilot and control aircraft, vehicle and vessel onboard systems.

Geolocation: Locating GPS/GNSS Jamming and Spoofing

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Securing Positioning & Timing 3: Detecting and Characterising GPS/GNSS Jamming & Spoofing
Royal Institute of Navigation. The third of a series of webinars from the Securing Positioning & Timing short course. This webinar covers Detecting and Characterising GPS/GNSS Jamming & Spoofing. Presented by Dr Mark Dumville. Supported by the UK Space Agency. Website: http://rin.org.uk/

Securing Positioning & Timing 4: Locating GPS/GNSS Jamming and Spoofing
Royal Institute of Navigation. The fourth of a series of webinars from the Securing Positioning & Timing short course. This webinar covers Locating GPS/GNSS Jamming and Spoofing. Presented by Mike Jones. Supported by the UK Space Agency. Website: http://rin.org.uk/

GNSS Jamming - Crowd Sourcing Detection and Geolocation
GNSS Jamming - Crowd Sourcing Detection and Geolocation webinar by InsideGNSS

Harris Corporation - Detect and Locate GPS Jamming with Signal Sentry™ 1000
Harris Corporation The Global Positioning System—GPS—is an essential element of the global information infrastructure. GPS jamming devices are becoming cheaper and more accessible, creating a greater need to protect from a diverse range of threats. Harris Signal Sentry 1000 is a GPS interference detection and geolocation solution. It provides a web-based visualization tool to support timely and effective actionable intelligence.

Why isn’t my GPS receiver consistently more accurate? with John Pottle
Royal Institute of Navigation. Presenter: John Pottle, Director of the RIN Website: http://rin.org.uk/

Current threats to GNSS: An update of incidents and impacts with Guy Buesnel
Royal Institute of Navigation. Presenter: Guy Buesnel, PNT Security Technologist Spirent Communications plc. Website: http://rin.org.uk/

Software-defined Global Navigation Satellite Systems (GNSS)

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Dr. Carles Fernandez: An Open Source Global Navigation Satellite Systems Software-Defined Receiver
Software Defined Radio Academy GNSS-SDR (see https://gnss-sdr.org) is an open source, software-defined Global Navigation Satellite Systems (GNSS) receiver. This software application takes care of all the digital signal processing chain (from the output of the Analog-to-Digital Converter of a radio-frequency front-end, or from raw sam- ples stored in a file), performing signal acquisition and tracking of the available satellite signals, decoding the navigation message and computing the observables needed by positioning algorithms, which ultimately compute the navigation solution. Several outputs are provided in standard formats, including RINEX observation and navigation files, RTCM-104 v3.2 message streaming via TCP/IP and NMEA-0183, as well as KML, GeoJSON, and GPX files for Geographic Information Systems, map representation and Earth browsers. Currently, the software is able to process GLONASS L1 C/A, GPS L1 C/A, Galileo E1b/c, BeiDou B1I, BeiDou B3I, GLONASS L2 C/A, GPS L2C, GPS L5 and Galileo E5a signals, in all possible combinations, including multi-constellation and multi-frequency configurations. The software leverages on the GNU Radio framework, inheriting multithreading scheduling and a modular, scalable architecture. The software is designed to facilitate the inclusion of new signal processing techniques, offering an easy way to measure their impact in the overall receiver performance under fair conditions, as well as the expansion to other signals.

GRCon20 - Software defined radio based Global Navigation Satellite System real time spoofing....
Software defined radio based Global Navigation Satellite System real time spoofing detection and cancellation Presented by Jean-Michel Friedt,, D. Rabus and G. Goavec-Merou at GNU Radio Conference 2020 http://gnuradio.org/grcon20 Global Navigation Satellite Systems (GNSS) -- most significantly the Global Positioning System (GPS) -- have become ubiquitous to most daily activities, from positioning and navigation to long range time synchronization or distributed energy production ("smart grid"). While initially developed as a military system hardly accessible to civilians, the advent of Software Defined Radio jamming and spoofing capabilities emphasize the low security of GNSS weak signals emitted from satellites orbiting the Earth 20000 km away. While a properly spoofing signal cannot be detected after a consumer-grade receiver has decoded the radiofrequency signal, addressing at the radiofrequency wave level the signal integrity provides the solution of identifying spoofing with all satellites appearing at the same direction of arrival. This classical beamforming analysis -- Controlled Reception Pattern Antenna (CRPA) with multiple antenna reception and phase analysis -- is demonstrated using commercial, off the shelf software defined radio platform receivers (Ettus Research B210) running the real-time GNSS decoder gnss-sdr based on GNU Radio running on embedded boards such as the Raspberry Pi4.

Long Range Navigation (LORAN)

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Long Range Navigation (Loran-c and eLoran)
Wade Cumberland AVN400 Presentation

BBC Click no GPS radio eLoran instead. Filmed at the Port of Felixstowe
BBC Click report at the Port of Felixstowe demonstrating the loss of GPS and using eLoran as an alternative

Quantum Sensors in Navigation

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  • Quantum
  • UK Research and Innovation
  • Review of Quantum Navigation | Donghui Feng - IOP Conference Series: Earth and Environmental Science
  • Quantum Sensing Technology Growing Rapidly to Enable Ultra Sensitive Quantum RADARS, Imaging, and Navigation | Rajesh Uppal - International Defence Security & Technology

Typically, the performance of measurement devices is limited by deleterious effects such as thermal noise and vibration. Notable exceptions are atomic clocks, which operate very near their fundamental limits. Driving devices to their physical limits will open new application spaces critical to future DoD systems. Indeed, many defense-critical applications already require exceptionally precise time and frequency standards enabled only by atomic clocks. The Global Positioning System (GPS) and the internet are two key examples. Measurement systems based on atomic physics benefit from the exquisite properties of the atom. Among these are (a) precise frequency transitions, (b) the ability to initialize, control, and readout the atomic state and (c) environmental isolation. In addition, atomic properties are absolute, and do not “drift” over time. In this sense, atoms are self-calibrated, making them ideal for precision sensing. Quantum-Assisted Sensing and Readout (QuASAR) | US Defense Advanced Research Projects Agency (DARPA)

Quantum Sensors in Navigation with Roger McKinlay, George Shaw and Kai Bongs
Royal Institute of Navigation Co-hosted by the UK Quantum Technology Hub Sensors and Timing and the Royal Institute of Navigation Presenters: Professor Kai Bongs, Principal Investigator at the UK Quantum Technology Hub Sensors and Timing; Roger McKinlay, Challenge Director for Quantum Technologies, UK Research and Innovation; George Shaw, Principal Systems Engineer, General Lighthouse Authority In this trio of presentations Roger, George and Kai discuss quantum sensors in navigation... Roger covers systems considerations in PNT and vulnerabilities in GNSS, UK industry opportunities and IUK programmes George covers current maritime navigation challenges, the resilient PNT system-of-systems approach and opportunity for Quantum Sensor technology insertion Kai covers quantum Sensor developments towards navigation solutions Website: http://rin.org.uk/

Nanoscale Quantum Sensing - Prof. Jorg Wrachtrup
Bar-Ilan University Nanoscale Quantum Sensing - a lecture by Prof. Jorg Wrachtrup of the Institute for Quantum Science and Technology in Germany. This lecture was given during the conference QUEST - Quantum Entanglement Science & Technology, held by Bar-Ilan University's Physics Department in June 2017.

Natural Navigation

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Henrik Mouritsen on How do migratory birds find their way?
Prof. Henrik Mouritsen (University of Oldenburg, Germany) on "How do migratory birds find their way?", at the FENS Hertie Winter School 2017 on Neural Control of Behaviour - Series 1: Navigation, 10-16 December 2017, Obergurgl, Austria.

Animal Navigation || Radcliffe Institute
Lizabeth Cohen 00:16 Dean, Radcliffe Institute for Advanced Study Howard Mumford Jones Professor of American Studies Department of History Harvard University John Huth 7:32 Donner Professor of Science Codirector of the Science Program Radcliffe Institute for Advanced Study Harvard University ANIMAL NAVIGATION 16:50 Susanne Åkesson 19:53 Professor and Principal Investigator Centre for Animal Movement Research, Lund University (Sweden) Introduced by Scott Edwards 17:51 Professor of Organismic and Evolutionary Biology Curator of Ornithology Alexander Agassiz Professor of Zoology in the Museum of Comparative Zoology Harvard University

Time & Music

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