Contributions of Mobile Computing in Real Time GIS Data Collection and Analysis

Syed Masiur Rahman (student id #220256)

Geographical Information System (GIS) GIS =

dynamic relations between spatial data (georeferenced) & relational data (attribute of features in tabular forms)

Spatial data

G I S

Computer hardware / software tools decision making objectives

Real Time GIS

Geometrical changes Positional changes Change of feature attribute Any combination of the above changes

Mobile Computing

Mobile computing is the use of computing devices at some distance from the normal, fixed workplace It enables the mobile worker to create, access, process, store, and communicate information without being constrained to a single location Contributions  Improved Information Accessibility  Increased Operational Efficiency  Increased Management Effectiveness Versatile and Strategic in Nature

CONTRIBUTIONS OF MOBILE COMPUTING

Nowadays, the GIS experts tend to access spatial information using wireless equipments. The recent development in mobile devices and technology are  PDA (Personal Digital Assistant),  Java-enabled mobile phones, laptop,  Bluetooth technology and Internet techniques In the site, the professionals can review and interact with the most up-to-date GIS data and even exchange data between handheld devices and corporate servers.

Mobile GIS

Mobile GIS is composed of a number of technologies  GIS  Mobile hardware in the form of lightweight devices and field PCs  Global positioning systems (GPSs)  Wireless communications for Internet GIS access

ArcPad Technology

How can we improve………?

ArcPad Technology

(cont’d)

ArcPad is an easy to use, lightweight, low cost solution for

bringing GIS to the field

ArcPad Features

Handheld, mobile devices, Pen-interface Multiple data formats Wireless technology Map navigation Map display Measure Query Data Data Capture Integrates with ArcGIS and ArcIMS

ArcPad for Local Govt.

Police Parks & Recreation Inspections Assessment

Graphic: ESRI

Water & Sewer Utility Engineering Public Works

EcoLoGGer

EcoLoGGer specifically designed to facilitate the natural resource sector, more specifically in a digital wildlife identification guide and observation recording system.

CONCLUSIONS

Mobile computing in GIS is mainly concerned with the ways to provide mobility. It can be achieved by self-contained GIS capability or by using telecommunication to access the database For both the cases, the amount of memory can be significant. The limitations of self-contained GIS solutions are heavier mobile systems, limited query capability and lack of timeliness.

CONCLUSIONS

(cont’d)

The mobility can be ensured by building relatively little database strength into the mobile client with a high bandwidth communications link.

It is a challenging task to connect network elements for transferring and storing GIS data on wireless Local Area Network (LAN) due to spatial data capacity and transfer rate. Software solutions to these problems are coming into being. It is expected that the bandwidth communications problem will be solved in hardware within the near future.

REFERENCES

Abowd GD and Mynatt ED. (March 2000). ACM Transactions on Computer-Human Interaction, Vol. 7, No. 1, March 2000, Pages 29–58.

Asproth V., Hakansson A. and Revay P. (1995). Dynamic Information in GIS Systems, Computers Environment and Urban Systems, Vol. 19, No.2, PP. 107-115 Clarke KC. (2001) Cartography in a mobile internet age, Proceedings, The 20th International Cartographic Conference, ICC2001, Beijing, China, August 6-10th, 2001, vol. 3, pp. 1481-1488.

Department of the Environment (DoE). (1987). Handling Geographic Information, HMSO, London. Dhawan C. (1997). Mobile Computing: A System Integrator's Handbook. New York: McGraw-Hill.

ESRI (Environmental Systems Research Institute, Inc. (November 1999). ArcPad: Field GIS for Windows CE. An ESRI White Paper. URL: http://www.esri.com/library/whitepapers/pdfs/arcpad.pdf

Rahman SM.

How mobile computing benefits real time GIS data collection?

GIS Development

, May-June 2005, Vol. 1, Issue 3

Rahman SM,

Rahman QA. Contributions of Mobile Computing in Real Time GIS Data Collection and Analysis. Conference proceedings, Map Middle East 2005

Conference on Geospatial Information and Knowledge Economy

23-25 April, Dubai, UAE. URL: http://www.mapmiddleeast.org

THANK YOU