Supporting Infrastructure for the Development of Location-based Services in Hong Kong

Transcription

1 Supporting Infrastructure for the Development of Location-based Services in Hong Kong NG Kwok-wai, Paul Assistant Director/Survey and Mapping Lands Department 20 October 2015

2 Contents Positioning Infrastructure Spatial Data Platforms Future Development 2

3 Survey and Mapping Office (SMO) Lands Department Legal Advisory and Conveyancing Office Survey and Mapping Office Lands Administration Office Departmental Administration Office Central authority for land surveying and mapping in Hong Kong 3

4 Responsibilities of SMO Establishment and maintenance of a geodetic control network of Hong Kong Provision of land boundary surveys, photogrammetric surveys and cartographic services Provision and revision of maps and plans Position Locationbased Services 4

5 LBS Components **Positioning Infrastructure **Spatial Data Platform Adopted from Foundations of Location Based Services by Stefan Steiniger, Moritz Neun and Alistair Edwardes 5

6 Essential Elements in Successful LBS Applications Accurate real-time positioning Access to up-to-date spatial information 6

7 Positioning Infrastructure Hong Kong Satellite Positioning Reference Station Network (SatRef) 7

8 Hong Kong Satellite Positioning Reference Station Network (SatRef) Developed by SMO, LandsD since Continuously Operating Reference Stations Receive GPS (USA) + GLONASS (Russia) satellite signal round-the-clock 8

9 Distribution of SatRef Stations Sha Tau Kok Fanling Shenzhen Bay Shap Sze Heung Kam Tin Wong Shek Lam Tei Sha Tin Kau Sai Chau Siu Lang Shui Chek Lap Kok Stonecutters Island Peng Chau Ngong Ping Mui Wo Quarry Bay Obelisk Hill Lamma Island 9

10 Continuously Operating Reference Station Lightning Protection System GNSS Antenna 5m Pillar Equipment Box Power Supply 10

11 How does SatRef work? Satellite data received at reference stations are sent to the Data Centre Data Centre Control Centre Processed satellite data & correction data are transmitted to the users through Internet and mobile phone network Computer Consumer Grade GNSS Receiver Professional Grade GNSS Receiver 11

12 SatRef Data Services Service Mode of Positioning Accuracy Level RINEX downloading Post-processing High precision level Network RTK Real-time cm-level Differential GNSS Real-time m-level Open to Gov t departments and contractors since 2006 Open to public for free since 2010 RINEX Downloading Network RTK Survey 12

13 Users of SatRef Data Services Government departments Private companies Academic institutions 13

14 Applications of SatRef 14

15 DGNSS Mobile Apps Platform Project: Development of Hong Kong Positioning Infrastructure based on GPS, Beidou and Ground-based Augmentation System Innovation and Technology Fund (ITF) of about 11 millions 2-year project coordinated by PolyU and LSCM, supported by SMO 15

16 DGNSS Mobile Apps Platform PolyU / LSCM Provide algorithms Provide network platform software to handle clients Develop software for network DGNSS correction Develop mobile phone apps SMO, LandsD Provide real-time GNSS data of SatRef Conduct field tests Field Test in July

17 DGNSS Mobile Apps Platform Differential Global Navigation Satellite System (DGNSS) Server Platform Make use of SatRef data Support client device e.g. smartphones / tablets with metre-level positioning accuracy in HK 17

18 Spatial Data Platforms HKSAR Geospatial Information Hub (GIH) GeoInfo Map MyMapHK Mobile Map App VoiceMapHK 18

19 LandsD s Online Mapping Services 19

20 Geospatial Information Hub (GIH) A new way of sharing and accessing geospatial information within the Government 1. Scattered geospatial data owned by different Bureaux / Departments ( Information Islands ) 2. Data processing, integration and dissemination GIH 3. Readily available data for sharing among different Bureaux / Departments 20

21 Geospatial Information Hub (GIH) Facilitating B/Ds in Analysis and Decision Making Support daily operations of more than 100,000 users (GIH Lite version) Support daily operations of more than 7,400 advanced users (GIH 2.0 version) Enable informed decision made by the Government and support swift responses to crisis 21

22 GeoInfo Map A common geospatial information platform for general public Background: Public aspiration for access to official maps and geospatial information of government facilities 22

23 GeoInfo Map Bilingual base map and orthophoto Over 190 types of facility data from 26 Bureaux and Departments Useful map tools User-friendly GIS functions Intelligent location search engine Updating Frequency: on Monthly basis Weekly Hit Counts: Over 6,000,000 23

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26 Future Development Upgrade of SatRef to be compatible with Beidou Navigation Satellite System Backpack Mobile Mapping System (MMS) 3D Spatial Data and 3D GIS 3D Pedestrian Network Spatial Data Infrastructure 26

27 SatRef with Beidou GPS (Global Positioning System) Developed by USA GLONASS (Global Navigation Satellite System) Developed by Russia BDS (Beidou Navigation Satellite System) Developed by China Upgrading SatRef to receive Beidou signal is in progress 27

28 SatRef with Beidou Improved availability Improved efficiency GPS only ( ) B B B GPS + GLONASS ( ) GPS + GLONASS + Beidou (Future) B 28

29 Backpack Mobile Mapping System (MMS) Capture panoramic videos/photos Record the photo position by using GNSS Receiver Street photo - Kai Tak Cruise Terminal 360 o Spherical Camera GNSS Receiver 29

30 Backpack Mobile Mapping System (MMS) 360 Camera GNSS Receiver Route of Survey (with SatRef Correction Signal) Setup of Backpack MMS Mapping Features on the Street Photo 30

31 Geographic Information System (GIS) Development 2D 2.5D 3D 31

32 3D Spatial Data 32

33 3D GIS BIM 3D Spatial Data Satellite Image Orthophoto Point Cloud Street View 2D GIS CAD Drawing 33

34 3D Pedestrian Network 34

35 Common Spatial Data Infrastructure Architecture COMPONENTS: Management Framework / Policy Partnerships Portal / Clearinghouse Components Metadata Geospatial Data Standards CSDI GOALS/BENEFITS: Avoid duplication of effort in data collection and portal development Improve data standardization Goals / Benefits Increase availability and accessibility of geospatial data Facilitate data sharing and speed up information flow Centralize data management 35

36 Common Spatial Data Infrastructure Architecture Technological Aspect of Spatial Data Infrastructure 36

37 Survey and Mapping Office, Lands Department Website: Tel: (852) Fax: (852)