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Atmospheric Remote Sensing by Microwave Radiometry. MICHAEL A. JANSSEN, Ed. Wiley, New York, 1993. xx, 572 pp., illus. $95 or L79. Wiley Series in Remote Sensing.
Microwave radiometry is concerned with the measurement of thermally emitted microwave radiation. Although its wavelength region is the same as that of radar, it is distinct from radar in that a radiometer has no transmitter; it is passive rather than active. In essence, it is applied radio astronomy. Much of the early work in microwave radiometry of the Earth was accomplished within radio astronomy groups.
Microwave radiometry is now used in making operational weather observations both from the ground and from satellites. It is also employed extensively from various platforms for a wide...