Full text: Proceedings of the Symposium on Global and Environmental Monitoring (Part 1)

725 
THE IMPACT OF USER REQUIREMENTS ON RADARSAT SYSTEM DESIGN 
D.R. Inkster 
Intera Technologies Ltd. 
101 6th Avenue S.W. 
Calgary, Alberta T2P 3P4 
A Luscombe 
Spar Aerospace Ltd. 
21025 Trans-Canada Highway 
Ste-Anne-de-Belleville, Quebec H9X 3R2 
S. Waterman 
MacDonald Dettwiller 
13800 Commerce Parkway 
Richmond, B.C. V6V 2J3 
ABSTRACT 
As a result of its all weather capability, RADARSAT offers a global imaging capacity that vastly exceeds that 
of the visual satellites. To ensure that this international capacity is translated into cost effective and timely 
products the Canadian company, "RadarSat International" (RSI) has been formed. RSI has been assigned an 
exclusive license by the Canadian Space Agency (CSA) to market and distribute RadarSat products, excluding 
data required by the Governments of Canada and the U.S. for their own use. At present, RSI is conducting 
market surveys for eventual RadarSat products, and is participating in reviews of the design of the Space and 
Ground segments of the RadarSat with the goal of optimizing system design for future users. 
The interpretation and use of RadarSat products will be quite different from visual satellites. Images will be 
available regardless of cloud cover or solar illumination. To take advantage of this feature, a near-real time 
distribution system is being designed for those users who can benefit from it. Radar images themselves present 
quite different interpretation problems to the users. Tonal and textural information are related to different 
target parameters, and the viewing geometry of the radar is different from that of the aerial photograph. In 
an attempt to ensure that the information available from RadarSat is useful for Canadian and international 
applications, the requirements of users have been assessed and incorporated in the end-to-end design of the 
RadarSat system. 
This paper describes the RadarSat design with specific reference to features of the system of importance to 
users involved in ice and ocean surveillance, to forestry and agricultural monitoring, and to geological mapping.
	        
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