Definition of synthetic aperture radar (SAR)

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TeachMeFinance.com - explain synthetic aperture radar (SAR)



synthetic aperture radar (SAR)

The term 'synthetic aperture radar (SAR)' as it applies to the area of Earth observation can be defined as ' A high-resolution ground-mapping technique that effectively synthesizes a large receiving antenna by processing the phase of the reflected radar return. The along-track resolution is obtained by timing the radar return (time-gating) as for ordinary radar. The cross-track (azimuthal) resolution is obtained by processing the Doppler phase of the radar return. The cross-track 'dimension' of the antenna is a function of the length of time over which the Doppler phase is collected. See Doppler effect'.

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Mark McCracken

Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English".


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