Progress in Coherent Detection Methods
نویسنده
چکیده
Coherent detection techniques are used almost exclusively in radio astronomy, while direct detection predominates in the optical and infrared bands. The millimeter, submillimeter, and far–infrared bands represent a transition region from coherent to direct detection. In this paper, the relative merits of coherent and direct detection in the mm through far–IR are compared, the techniques of coherent detection are described, and recent technological advances in coherent detection systems are discussed.
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