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PNT in the kitchen

Posted By Andy Proctor, 08 December 2022

In our inaugural event on the 1st November we hosted around 100 senior Positioning, Navigation and Timing (PNT) leaders from across industry, academia and government at the Royal Society to discuss where PNT is in the UK, where the group thought it needed to be and how to get there. The meeting was held under Chatham House rules. 



A primary keynote was given keynote on the economic benefits of resilient PNT to the UK. This reflected a hypothesis that ‘the UK can generate value and sustainable leadership from investing in resilient PNT, benefiting government, academia, industry and, ultimately, individuals.’ The London Economics concept paper that this is based on, which can be downloaded HERE, notes that the UK has significant economic value at risk to even a temporary outage of GNSS, with the road transport, emergency, and justice services, and maritime found to be most precariously positioned. 

The London Economics paper continues to assess that major critical infrastructure sectors across the economy remain insufficiently prepared to face the consequences of outages or disruption to satellite-derived time and position, and that backup systems mitigate against the economic value risk. 

A recommendation was made that additional work is needed to identify and rank mitigation strategies in order of priority based on strategic and economic factors, that these need to be funded to prove the concepts and that the sector itself should organise itself to present a coherent face to global partners and customers. 

This echoed the introductory talks which discussed success being delivered through three functions; [having the right] infrastructure, [putting in place the right] leadership and governance, and [having a pipeline of] skills. The latter being identified through the day as a red flag for all concerned. Examples of open PNT roles were given by delegates, validating the point.

The main focus of the day was two excellent panel sessions, the first focussing on UK strengths, the second being concerned with examples of success but where there is room for improvement. The organisers were aiming for interactive discussion, and this was achieved, with many points being made by the wide range of delegates. 

 

Some of the key messages and points made include: 
the ability to monetise PNT services is a challenge when competing against “free”1  with GPS. 
The role, if any, for better use of legislation, regulation, and standards in resilient PNT – this requires systems thinking and a market focus, moving away from silos that sometimes we fall into.
The afternoon panel discussed the important point of careers and heard from all panellists about the need to create skills and career pathways from academia [including further education, not just universities] into industry and then structure for CPD. 
Overall, a strong call for co-ordinated action, led by government, on skills to have a greater focus that has been given thus far. It was recognised that individuals will invest their own careers in sectors with high growth and consistent investment. A strong strategy and programme for PNT in the UK would provide impetus and confidence for investment across the ecosystem, arguably reducing government’s own commitment required as well as reducing risks for all stakeholders. 
There was a clear wish for collaboration, particularly on governance and skills. There was a recognition that a range of short, medium and longer term actions will be needed. There was a strong call for RIN to be more proactive, and support for RIN taking leading roles in these areas.  

Where the group saw the role of Government was an urgency to announce a strategy and associated governance and programmes. Such leadership and structure itself would build confidence and create/enable the conditions for industrial growth. There were several specific examples cited where the current lack of clear decisions is having real impacts on business decisions, with investment and skills going elsewhere, including overseas. Government leadership and targeted initial investments in R&D and skills, possibly infrastructure too, with a well-targeted legislative approach, would build confidence. This, in turn, would lead to increased investment across the sector, and from individuals wanting to invest their careers in PNT. 
 


There was some discussion on how to support and encourage Government towards strategy and programme announcements. The MoD was cited as a good example where high priority has been given to [resilient] PNT. The attendees also were briefed on US experiences and that a more visible public information campaign and a visible and high-profile champion for PNT in the UK could be helpful.

Overall, the key messages from the meeting are below
 

 

What therefore is the role of the RIN in PNT going forward? 

 

The RIN is a learned society and as such is very well-placed addressing long term thinking, strategies and providing input to setting goals with Government. There was a call for the RIN to be the voice of PNT and Resilient PNT in the UK which means not only “helping Government walk backwards over the bridge” but in building the bridge in the first place! The call for RIN to take a proactive and leading role in this way received wide and universal support. 

The PNT Advisory Group (PNTAG), a special interest group under the Technical Committee, was warmly welcomed as the place to coalesce the UK’s PNT thoughts and directions but on the condition that it does something and not becomes a YATS (Yet Another Talking Shop). To that end I, in my summing up showed the PNTAG’s plan of action: 

 

The immediate task for the PNTAG is to update this workplan2 to reflect the outcomes from the event and the community input. 

Next will be to act on the plan and show that the RIN can deliver on leadership, long term thinking, support our colleagues in Government and to provide advice/guidance to the sector. We agreed we will plan to hold a repeat event around the same time next year where we will track progress – holding ourselves to account! The enthusiasm in the room on the day certainly gave me confidence that the plan is achievable. 

To summarise and to channel one of the speakers’ comments a little, the takeaway for me is that for PNT in the UK, we have all the ingredients of success and growth, but need the recipe and hunger to cook the meal.  

Our job is to pull the recipe for resilient PNT together and create the hunger for its implementation.

 

I would like to end with a call offers to contribute to the various work streams – please do get in touch with me if you are able to support this work.

Andy Proctor, MA CEng, FRIN, FIET
Chair, RIN PNT Advisory Group

 

[1] I know implementing GNSS services is not strictly free, but GPS is free to access, which is what I mean.

[2] If any readers would like information on any of the workstreams, I would be pleased to receive questions. (andy.proctor@rethinkpnt.com)

 

 

Tags:  PNT  position navigation and timing  resilient pnt 

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New Book: Position, Navigation, and Timing Technologies in the 21st Century (“PNT21”)

Posted By Jade Morton, 07 December 2020
Updated: 02 November 2020

by Jade Morton, Frank van Diggelen, Bradford Parkinson

After more than five years of hard work by 131 authors from 18 countries, “Position, Navigation, and Timing Technologies in the 21st Century” (“PNT21”) is finally ready to meet the readers. Published by Wiley-IEEE Press, and written by world-renowned experts, PNT21 offers uniquely comprehensive coverage of the latest developments in the field of PNT .

PNT21 is a two-volume set containing 64 chapters organized into six parts. Volume 1 focuses on satellite navigation systems, technologies, and applications. It starts with a historical perspective of GPS and other related PNT development. Vol 1 Part A consists of 12 chapters on fundamentals and latest developments of global and regional satellite navigation systems (GNSS and RNSS), the need for their coexistence and mutual benefits, signal quality monitoring, satellite orbit and time synchronization, and satellite- and ground-based augmentation systems that provide information to improve the accuracy of navigation solutions. Part B contains 13 chapters on recent progress in satellite navigation receiver technologies such as vector processing, assisted and high sensitivity GNSS, precise point positioning (PPP) and real time kinematic (RTK) systems, direct position estimation techniques, and GNSS antennas and array signal processing. Also: the challenges of multipath-rich urban environments, in handling spoofing and interference, and in ensuring PNT integrity. Part C finishes the volume with 8 chapters on satellite navigation for engineering and scientific applications. A review of global geodesy and reference frames set the stage for discussions on the broad field of geodetic sciences, followed by a chapter on GNSS-based time and frequency distribution. Three chapters are dedicated to severe weather, ionospheric effects, and hazardous event monitoring. Finally, comprehensive treatments of GNSS radio occultation and reflectometry are provided.

Volume 2 addresses PNT using alternative signals and sensors and integrated PNT technologies for consumer and commercial applications. An overview chapter provides the motivation and organization of the volume, followed by a chapter on nonlinear estimation methods which are often employed in navigation system modeling and sensor integration. Vol 2 Part D devotes 7 chapters to PNT from various radio signals-of-opportunity transmitted from sources on the ground, from aircraft, or from low Earth orbit (LEO) satellites. In Part E, there are 8 chapters covering a broad range of non-radio frequency sensors operating in passive and active modes to produce navigation solutions, including MEMS inertial sensors, advances in clock technologies, magnetometers, imaging, LiDAR, digital photogrammetry, and signals received from celestial bodies. A tutorial-style chapter on GNSS/INS integration methods is included in this Part E. Also included in Part E are chapters on the neuroscience of navigation and animal navigation. Finally, Part F presents a collection of contemporary PNT applications such as surveying and mobile mapping, precision agriculture, wearable systems, automated driving, train control, commercial unmanned aircraft systems, aviation, satellite orbit determination and formation flying, and navigation in the unique Arctic environment.

Because of the diverse authorship and topics covered in PNT21, the chapters were written in a variety of styles. Some offer high-level reviews of progress in specific subject areas, while others are tutorials. A few chapters include links to MatLab or Python example code as well as test data for readers who desire hands-on practice. The collective goal is to appeal to industry professionals, researchers, and academics involved with the science, engineering, and application of PNT technologies. A website (pnt21book.com) provides downloadable code examples, data, homework problems, select high-resolution figures, errata, and a way for readers to provide feedback.

If you wish to purchase this book through www.wiley.com you can use a discount code for 30% off - please use code: VBS10 between 21st October and 31st December 2020.


Tags:  navigation  new book  PNT  position navigation and timing  technology 

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