The use of radar satellite sensors for environmental mapping and resource management has been the subject of much investigation in recent decades. Following the introduction of space-borne Synthetic Aperture Radar in the 1990s (ERS1/2, JERS-1, ALMAZ, Radarsat), much research has been conducted on detecting and assessing features related to forest, agriculture, wetlands, rangelands, land cover inventory, and urban and topographic mapping. This paper presents a brief historical review on radar developments, with an overview of the characteristics of the radar systems that are currently operational. After presenting several examples of existing and potential SAR applications in fields such as agriculture, forest, land degradation, urban and topographic mapping, and monitoring tasks, the paper concludes with some research issues, trends and developments in the use of radar imagery for mapping purposes.
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Graciela Metternicht (1999) studied this question.
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