21 December 1998 Millimeter-wave aperture synthesis for remote sensing of the Earth
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Abstract
Millimeter-wave radiometry of the earth's surface from Low Earth Orbit (LEO) with a resolution of a few km requires antenna apertures several meters across and sub-second scanning times. Fulfilling these requirements with a mechanically scanned real-aperture antenna presents formidable mechanical challenges. An attractive alternative described here is to use synthetic aperture techniques employing a sparse-array of antennas that trade the mechanical complexity of real-aperture imaging for the electrical complexity of synthetic aperture imaging. We present results of an ESA- sponsored study aimed at seeking the optimum technique for high performance synthetic aperture mm-wave radiometry from LEO.
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Andrew Robert Harvey, Alain H. Greenaway, Adriano Camps, Javier Bara, Francisco Torres, Ignasi Corbella, Manuel Martin-Neira, "Millimeter-wave aperture synthesis for remote sensing of the Earth", Proc. SPIE 3498, Sensors, Systems, and Next-Generation Satellites II, (21 December 1998); doi: 10.1117/12.333620; https://doi.org/10.1117/12.333620
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