For immediate release: August 21, 2003

MDA Signs $2.1 Million Monitoring and Mapping Order

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA) announced today that the company's Geographic Information Products Group has been awarded a $2.1 million (CDN) order by an Asian customer for information products from RADARSAT-1.

RADARSAT-1 is a reliable source of data because it works in all kinds of weather conditions and darkness. Asia's tropical climate brings heavy rainfall and cloud cover to the region.

For over six years the customer has been using information products from RADARSAT-1 for a variety of purposes, primarily as an input to rice yield forecasting models and the mapping of rice acreage. It's also used for defence, ship monitoring, and pollution control.

Related Websites:
www.mdacorporation.com
www.rsi.ca



For more information, please contact:

Ted Schellenberg
Media Relations
MacDonald Dettwiler
Telephone: (604) 231-2215
E-mail: teds@mda.ca