the future of geospatial and positioning infrastructure€¦ · npi that supports positioning,...

The Future of Geospatial

and

Positioning Infrastructure

Amy Peterson and Rob Sarib

DLPE - Survey Services

29 May 2015

DEPARTMENT OF LANDS PLANNING and the ENVIRONMENT

NT Spatial 2015 - New Positioning Technologies and Spatial Techniques Forum

• What is a modernised Geospatial and Positioning Infrastructure?

• What are the trends from an international perspective?

• Status and future plans of the NT Geospatial Reference System (GRS)

• A New Geodetic Datum • Challenges ahead

Presentation Content


International Fédération of Surveyors Fédération Internationale des Géomètres Internationale Vereinigung der Vermessungsingenieure

The International Federation of Surveyors Federation of national associations; Represents all surveying disciplines; UN-recognised non-government organisation (NGO); Its aim is to ensure that the disciplines of surveying and all who practise them meet the needs of the markets and communities that they serve; It provides an international forum for discussion and development aiming to promote professional practice and standards Liaise with like minded organisations - UN GGIM, IAG

The International Federation of Surveyors (FIG)

The International Federation of Surveyors

The International Federation of Surveyors (FIG)

TEN FIG Commissions Commission 1 – Professional Standards and Practice

Commission 2 – Professional Education Commission 3 – Spatial Information Management

Commission 4 – Hydrography Commission 5 – Positioning and Measurement

Commission 6 – Engineering Surveys Commission 7 – Cadastre and Land Management

Commission 8 – Spatial Planning and Development Commission 9 – Valuation and the Management of Real Estate Commission 10 - Construction Economics and Management

Young Surveyors Network

What is the “geodetic reference frame” and what is it

used for ?

From an FIG perspective….. • The geodetic reference frame is Geospatial Infrastructure

• Critical to geoscience activity as it measures and monitors the

dynamics of the earth

• Primary purpose is to define and realise the horizontal and vertical spatial datums

• Is the reference or fundamental layer that underpins most spatial datasets or information or systems

FIG Perspective

From an FIG perspective….. • Is the backbone for positioning frameworks and location

intelligence

• It is recognised as essential and enabling infrastructure supporting sustainable economic development

• It is “fit for purpose” infrastructure

• Integral component of geospatial activity in surveying, mapping, GIS, LIS, “ubiquitous” positioning applications, imagery data collection and analysis

FIG Perspective

What does “modernisation” mean from a FIG perspective

?

What does “modernisation” mean

from a FIG perspective ?

Geospatial infrastructure and / or reference frame which has ………. • Been mathematically aligned with International Terrestrial Reference Frame (ITRF) realisations

• A hierarchy of rigorously propagated co-ordinates (position) and uncertainties for the geodetic / survey control network

• Integrity, reliability and is survey accurate

• Interoperability and unification amongst geospatial information datasets and systems at all levels – local, national, regional, and global

FIG Perspective

• Several International GNSS Service (IGS) compliant GNSS CORS contributing to Asia Pacific Reference Frame (APREF).

• Defined and derived a geoid and / or the relationship

between “height” systems

Geospatial infrastructure and / or reference frame which has ……….

• Adhered to international standards and practices

• The capability to benefit from a multi – GNSS environment

FIG Perspective

• The capability to support global observing systems for accurate scientific research modelling such as inter / intra tectonic plate deformation, sea level monitoring, climate change, atmospherics

Geospatial infrastructure and / or reference frame which has ……….

FIG Perspective

• Is aligned with new mass-market wide area positioning technology and applications i.e. national, regional and global real time positioning services delivered by satellite, digital communications, and the Internet

Geospatial infrastructure and / or reference frame which ……….

FIG Perspective

• Can utilise or benefit from quality imagery / satellite data, the development of new mapping technologies and products

Geospatial infrastructure and / or reference frame which ……….

FIG Perspective

FIGs perspective on the modernisation of geospatial infrastructure / geodetic reference frame ........

• Implement an ITRF / APREF based geospatial or geodetic

reference frame

• Densify multi GNSS CORS infrastructure as it is the most cost effective way to integrate, maintain and ensure compatibility across various geospatial systems and datasets at the local, regional, national and global level.

Significant FIG Messages

FIGs perspective on the modernisation of geospatial infrastructure / geodetic reference frame ........

• ITRF / GNSS CORS infrastructure provides opportunities to use

and access traditional and future positioning related applications / services

• Utilise copious amounts of data from earth observing / monitoring systems as it will be available and be collected with respect to ITRF

• Key to success – There must be a unified and collaborative approach with common objectives to achieve “fit for purpose” infrastructure.

Significant FIG Messages


?

So what are the Territory’s / drivers, objectives and plans for GRS (geodetic

framework) modernisation?

50 mm

300 mm Distortions!

Drivers for Modernisation 1 – Limitations of GDA !

1.4 m


Meckering, WA Oct 1968

Canterbury , NZ 2010/11

Drivers for Modernisation 2 – Deformation demands datum maintenance !


http://www.google.com.au/url?sa=i&rct=j&q=subsidence&source=images&cd=&cad=rja&docid=lNXJosD3lIYIBM&tbnid=YSGNDg_RY6yBUM:&ved=0CAUQjRw&url=http://www.ngs.noaa.gov/GRD/GPS/Projects/CB/SUBSIDENCE/subsidence.html&ei=Zi8rUaq8B8zMmgWIh4C4AQ&bvm=bv.42768644,d.dGY&psig=AFQjCNFMhufZKownaqgrqW9tPAvhd9Jr2g&ust=1361871046554154

Imagery Elevation Transport/ Utilities Addresses Boundaries Water

Survey Control

The Real World Volumes of data generated and geo-referenced by GNSS techniques on ITRF!

Datum - GRS

Drivers for Modernisation 3 – Demand for and reliance on high quality spatial data is insatiable !


http://copter.ardupilot.com/wp-content/uploads/sites/2/2013/06/ag_GPS_Operation_New_low_res.jpg

Canterbury , NZ 2010/11

Drivers for Modernisation 4 – Precise Co-ordinates will be easy to obtain !


Real-time precise positioning will become more easy, affordable, accessible, reliable in a multi GNSS environment .... the datum / GRS must respond to such changes and also to other advancements in positioning technologies, applications, infrastructures!

• Propagation of co-ordinates and uncertainties via a rigorous, nationwide adjustment of geodetic information.

• Accurate traceable connection to ITRF

• Support positioning with HORIZ uncertainties < 20mm, VERT < 50mm

• 3D with a national Geoid model

• Seamlessly aligned with positioning infrastructure and services.

• Enable time-based correction plate and deformation models.

• Users contribute measurements to an automated system for exchange of geodetic data.

• Products and services are delivered through web based systems

Characteristics of a modernised NT GRS



?

GRS = geospatial reference system = geodetic framework !

To upgrade the accuracy and integrity of our GRS

and this includes GDA !

To cater for the users demand for high accuracy and reliable positioning!

To utilise vast amounts of geospatial data!

To mange the dynamics of the earth - Initially 1.8m change and then after it is managing tectonic plate

movement of 70mm / year and local deformation

Summary to date......

Progress towards a modernised NT GRS


1. Continue GNSS CORS Infrastructure Development

Kidman Springs May 2015

• 12 m diameter radio telescope ; co -

located with GNSS CORS; 1 of 3 telescopes in Australia.

• Busiest in the southern hemisphere array – South Africa, NZ

• 178 days of observing in 2014; will observe

235 sessions in 2015. • Assist’s with -

a. The enhancement of the International Celestial Reference Frame

b. Measuring and monitoring the motion and deformation of the Australian plate

c. Improves the overall quality of data and measurement error – from “cm” to “mm”



2. Support VLBI infrastructure – Katherine CDU



3. Refinement and adoption new survey control standards and processes for the modernised datum (SP1, GDA Tech manual etc)

4. Prepare and maintain a RINEX archive of GNSS measured survey control points. 5. Cleanse and validate existing survey control datasets 6. Perform GNSS field observations to connect the existing GDA94

datasets to the new ‘GNSS CORS’ GRS framework 7. Convert survey control datasets into DynaNet format 8. Ensure survey control database is operational 9. Plan and begin working with users to implement a new geodetic

datum (includes tools and utilities to support change)

XXV FIG Congress 16-21 June 2014, Kuala Lumpur, Malaysia Progress Towards a New Geodetic Datum for Australia

National GNSS CORS Solution

National Adjustment

of Australian Terrestrial Reference Frame (ATRF)

National GNSS Campaign Solution

Jurisdictional Adjustments

AUSPOS 6hr+ GNSS sessions

APREF



10. Propagate GDA2020 Co-ordinates and Uncertainties to a reference epoch of 1 January 2020

Fully rigorous geometric adjustment aspire for an all station and observations adjustment (down to the street corner) phased adjustment strategy work flows managed automatically (using e-Geodesy technology)



11. Develop time based correction, plate tectonic and deformation models.

12. Maintenance of “working surfaces” ( i.e. AHD ) and on going

development of tools / utilities to support these surfaces and datasets.

13. Expand recognised value standards of position – densification of Regulation 13 certificates

Time

GDA94

2010 2015 2020

Interim ‘GDA2020’ Semi-dynamic Epoch: 2020.0 + Deformation

Re-adjust annually

Dynamic

Epoch: Current + Deformation

Defined 1994

ATRF


Roadmap of the NT GRS and GDA2020

• Promoting, marketing, “selling” the concepts and change!

• Tools and education of users to assist implementation! • Justification of activities – RESOURCING!

• Working surfaces • Quality and integrity of datasets

Challenges


Presentation material sourced from

• FIG Comm 5

• UN GGIM AP

• ICSM PCG

THANKS FOR LISTENING !

Acknowledgments


A coordinated whole-of-government approach to building a NPI that supports Positioning, Navigation & Timing (PNT) in Australia. A recognised need to identify and address government, industry and research positioning requirements for: A vision to assure instantaneous, reliable and fit-for-purpose PNT services anywhere and anytime across the Australian landscape and beyond.

• Accuracy • Open Data • Integrity • Standardisation

• Certification • Interoperability • Risk mitigation • Privacy

National Positioning Infrastructure (NPI)


Improved Governance

Ground Infrastructure Development

GNSS Analysis

Capability

Data & Service Delivery

• PNT Working Group & NPI Advisory Board established

• Engage key government, industry and research stakeholders

• Facilitate standards adoption and data sharing

• Upgrade national GNSS ground infrastructure

• Facilitate international engagement and collaboration

• Develop and validate GNSS products and services (Analysis Capability)

• Investigate ground and space-based delivery systems

• Mitigate vulnerabilities


NPI Progress / Planning

Chaired by Geoscience Australia. Reports to the Space Coordination Committee (SCC). Draws together key Australian Government agencies involved in PNT to advise the SCC on the status and future of positioning in Australia. Quarterly meetings with presentations invited from industry. Key discussion points for 2014 include: • Spectrum management • Status and capabilities of new GNSS • International engagement • Hosting of GNSS ground infrastructure • Engagement on NPI planning


Positioning, Navigation & Timing Working Group

• Established December 2014 to advise GA on developing and implementing the NPI. • Ten permanent members (outside of GA) nominated from government, industry and

research • Membership drawn from individual experts representing key sector groups across Australia

and New Zealand, including:

• Technical Working Groups (TWG) will be commissioned to address key issues and priorities for the NPI, including infrastructure management and minimum performance standards.

‘Instantaneous, reliable and fit-for-purpose access to position and timing information anytime and anywhere across the Australian landscape and its maritime

jurisdictions.’

Improved Governance

Ground Infrastructure Development

GNSS Analysis

Capability

Data & Service Delivery

o Transport o Spatial o Research o State/Territory Government o Maritime

o Equipment Manufacturers o Engineering/Construction o Aviation o Agriculture o Australian Government


NPI Advisory Board

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