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Introduction

Introduction. Oscar E. Jarquin Chief, Office of Information Technology California Department of Transportation (Caltrans) Los Angeles, California, USA Civil Engineer Land Surveyor GIS Professional Project Manager Program Manager. Presentation Goals. Information Lifecycle

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Introduction

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  1. Introduction Oscar E. Jarquin Chief, Office of Information Technology California Department of Transportation (Caltrans) Los Angeles, California, USA • Civil Engineer • Land Surveyor • GIS Professional • Project Manager • Program Manager

  2. Presentation Goals • Information Lifecycle • Why?... Data Driven Decision Making • How?… Data →Information →Knowledge • Visual Interface – The Human Element • Strength • Weakness • Primary Key to Infrastructure Data • Linear Referencing Systems • Enterprise Architecture

  3. Geospatial Technology... a conceptual definition • Computer Aided Design & Drafting (CADD) • Geographical Information Systems (GIS) • Global Positioning System (GPS) • Computer Aided Dispatching (CAD) • Automated Mapping / Facility Management

  4. Automobile ID Make Cost Balance Color Data Real World 50067 Ford 11 3 Blue Abstract 8994 Ford 16 2 Black Decision Integrate 43389 GMC 15 0 Black 90055 Fiat 12 0 Blue Information Lifecycle Representation Information Knowledge

  5. 1 Data

  6. 2 Data

  7. 3 Data ?

  8. Information to Knowledge

  9. ... a working definition A computer system consisting of hardware and software that utilizes relational database technology and a topological data structure to allow the integration of raster and vector spatial data with tabular information for display, edit, query, analysis, combination, creation, maintenance, and management of geographic data sets in an environment that is customizable to meet the application needs of the users forming a powerful network of information that facilitates the sharing of data for better decision-making.

  10. GIS Organization

  11. Spatial Key/Relationship Reference Systems Cartesian Coordinates (3,2) 3.605 (0,0) (GPS) Latitude & Longitude projected to Cartesian Coordinate System

  12. + Calculate Baer Av 3rd St Main St Data/System Integration Relate Spatial Key

  13. Linear Referencing 4 3 5 2 • “Calibration” • “M-Enabled” • Automatic Methods 1

  14. What is Linear Referencing? Introduction What is LR? Why use LR? How to use Example Considerations Find More Conclusion “Linear Feature” An Example “Distance Along” “I’m at mile marker 66 on State Highway 112.”

  15. Considerations • Routes and Route Events can not exist independently. • Edits on one may affect the other. 604.0 Route AAA 614.0 0.0 Route A 10.0

  16. How to use… • Events Point Events Line Events

  17. asphalt concrete Surface none $1M CIP 45 30 35 Speeds 2 4 Lanes Road Why Use Linear Referencing? segment

  18. Multiple LRM’s County Route Postmile ORA 405 R 23.000 County Route KiloPost ORA 405 R 33.877

  19. California Business Driver… Corridor Management

  20. SOA (Service Oriented Architecture) Java/XML Message Bus Service Oriented Architecture (SOA) Applications Other TIMI Parcels GIS CTIS PEAR Others St. Hwy Inv. HPMS Doc Mgt Envir. Asset Mgt Security Other Functions Linear Referencing SHARED FUNCTIONS Mapping Search Functions CAD Internet Others Locals Google Earth Public State Agencies SOA output via GIS = Planning, PID, Design, Proj. Mgt., Constr., Operations, etc. for system performance, geometrics, etc. PMS Data Files TASAS HPMS Hwy. Inven. Traffic Volume Other TMCs (loops, CMS, etc.) TSM Web Pages Programming OE-PSE Main Frame CT PASS External Sources

  21. Identifying Common SOA Components

  22. Post Mile Info GIS Files Cadastral CADD Geospatial Data Management Google Earth Web Geospatial Data GIS MicroStation • Geodatabase / Web Services

  23. Postmile Lookup Tool

  24. ArcGIS Tool Bar

  25. GPS Satellites The GPS Operational Constellation consists of 24 satellites that orbit the Earth in very precise orbits twice a day. GPS satellites emit continuous navigation signals.

  26. Receivers and Satellites GPS units are made to communicate with GPS satellites (which have a much better view of the Earth) to find out exactly where they are on the global scale of things.

  27. Time Difference The GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time difference tells the GPS receiver how far away the satellite is.

  28. 3-D Trilateration 1 Satellite 2 Satellites 3 Satellites

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