|
Track: Transportation, Logistics Planning
Lee Neher
Lawrence Livermore Labs
1147 South Bluff Dr
Roseville, CA 95786
Telephone: 916-784-7426
Fax: 916-784-7101
E-mail: lneher@ns.net
GIS in a Truly Mobile, Client/Server Environment
Defining Issue: Maintaining TCP/IP to a mobile unit without any land line connection has been both difficult and expensive. GIS Solution: GeoData-Analytics, along with CommUnique LLC and Lawrence Livermore Laboratory, have developed a viable solution for city departments or other work groups. Methodology: This pilot application is based on a mobile ArcView Version 3.0 process establishing a client/server relationship with a central ArcInfo process to exchange real-time GIS data, such as GPS locations, together with live video and voice recordings. The application is initially aimed at field staff being able to interact with central staff to answer questions such as: What is the current spatial distribution of searchers? What species is this? Which value should I chose? The TCP/IP connection between multiple hosts occurs using 900 mhz spread spectrum radio modems with software that allows dynamic rerouting of connections via intermediate hops if needed. Software: The process was written using
Avenue and AML. Currently, several PC-based video capture/display plugin software packages are being evaluated for image quality and frames/sec. performance within the application. The paper highlights the technical issues encountered during the development and integration of the hardware/software products. We hope to be allowed to demonstrate the application at San Diego with a mobile laptop, running ARCVIEW Version 3.0 and live video, transmitting at 115 Kb to a projection-equipped PC in the session room.
|
|
