Transcript Tsou_2003AAG. ppt - Internet Mapping Services for San Diego

AAG 2003,
New Orleans
Integrated Mobile GIS
and Wireless Internet Map Servers for
Environmental Monitoring and Management
By Ming-Hsiang Tsou
E-mail: [email protected]
Phone: 619-5940205
Fax: 619-5944938
The Department of Geography, San Diego State University
Mobile GIS
• Mobile GIS refers to the
access and use of GIS data
and functions through mobile
and/or wireless devices.
(Notebooks, PDA, tablet PC, Pocket PC, etc.)
• WHY mobile GIS
– Field works: data collection and validation
process, coupled with GPS and wireless
communications.
– Real-time update / change
– GPS integration.
Environmental Monitoring and
Natural Habitat Managements
• TASKS:
– The adoption of remotely sensed images
– The analysis of habitat changes (land cover)
– Monitoring multiple plant and animal species across regions.
• PROBLEMS:
– Field survey and data acquisition are difficult, time-consuming
– Traditional RS and GIS software are very expensive, difficult to use.
– Regional program managers and park rangers seldom have the
necessary resources or training to access RS/GIS data
– There is a strong need to develop an easy-to-use, inexpensive set
of field survey tools
Internet Map Servers and
Wireless Communication
• WHY Internet Map Server (IMS)?
• The storage problems in mobile devices (too small)
• Multiple users access
• Data Update for multiple users at the same time.
• Internet Map Server  Intranet Map Server
• Local access ONLY via Wireless LAN.
• (Wi-Fi or Wi-Fi5 broad bandwidths)
Wireless Local Area Network (WLAN)
IP address-based (130.191.118.30)
No Internet Connection.
Different from cellular phone communication (CDMA, GPRS)
Fast Transmission Speed, Good for GIS applications (large size of data/images)
• Wi-Fi (802.11b, 11Mbps, 2.4 Ghz),
• Wi-Fi5 (802.11a, 54Mbps, 5GHz). (next  802.11g)
Integrated System Framework
(Internet Map Servers, GPS, Wi-Fi, Pocket PC, Vehicle)
Internet Map Server on
notebook computer with
wireless access port.
Wi-Fi wireless
communication
(up to 300 feet)
Field workers: Pocket
PC, GPS, and wireless
card.
Autonomous Unit:
Independent, Portable, Reliable
Mobile unit with Portable Battery
Mobile unit mounted on a vehicle.
User Scenario:
Environmental Monitoring and Management
Mission Trail Regional Park (short movie)
System Implementation
• Hardware:
•
•
•
•
Notebooks (Web Server + ArcIMS)
Pocket PC (Clients + Wi-Fi compact flash card)
GPS (with serial cables to Pocket PC)
Wireless Access Point (Hub)+ Twisted Ethernet
Cable (directly from Server to Hub)
• Software:
• Server-side: IIS 5.0 + ArcIMS 4.0
• Client-side: ArcPad 6.0, Pocket IExplorer, FTP
• Network Setting:
• IP Address  NO Domain Name System (DNS)
Evaluate Land Cover Change by ADAR
Images via Internet Map Server
(MTRP BMX site)
User Scenario Testing (Jan 15, 2003)
Use GPS and remote sensing data to identify a
new location of invasive plants (pampas grass)
Real-time Report
Submission
and Data Upload
(from Pocket PC to Server)
Current Limitations and Problems
• Wireless Technology is changing fast.
• The short range of current commercial WAP
devices (300 – 1000 feet)
• Limited Software Customization Capability (only
user interface customization, no system function level, such as
direct data upload)
• Pocket Internet Explorer (No Java applets capability)
• No Vector-based IMS for Pocket PC
Research Agenda
• Explore other potential GIS applications (virtual
tour guide, homeland security, emergency rescue, etc.)
• Enhance Information Security – Wireless
Communication. (for sensitive data) PDA: Fingerprint ID.
• Data Transmission Efficiency (compression
techniques)
• User Interface Design (Different from Desktop PC)
• Smart Display for different devices (Software Agents)
Possible Applications:
Police Department
Emergency Rescue
Border Patrol Agency
Homeland Security
High Performance Wireless
Research and Education Network
(HPWREN) UCSD-SDSU
http://hpwren.ucsd.edu/
Santa Margarita Ecological Reserve
SDSU Campus
(Communications Building )
Intelligent Mobile Services
Software Agents for Mobile GIS
• Software Agent help users to access requested
data / images from ArcIMS Server (100 GIS
layers).
• Software Agents convert the original display
setting for Desktop (1024x768) to Pocket PC
resolution (300x240).
• Automated Data Conversion / Integration.
Research Project and Web Site
Http://map.sdsu.edu/mobilegis
Thank You
Q&A