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- W2187680702 abstract "We present a study of requirements on the sensitivity of mm and sub millimeter wave receivers for application in radio astronomy. The study is based on the experience of the operation of the SIS receivers at the radio telescopes of IRAM and considers also the conditions of operation at the future radioastronomical instruments such as LSA. MMA and LMSA. Using a radio telescope and atmospheric model we consider the effect of the receiver sensitivity on the radio telescope operation in terms of observing time. The observing time at a radio telescope depends on the system noise temperature as strongly as on collecting area. which defines nearly all the cost of modern mm and sub mm instruments. As a compromise between the receiver development effort and the system performance we introduce a criterion of an optimum receiver noise. A strict requirement on the receiver operation is obtained. For an efficient use of the existing and the future radio telescopes. a 10 20 K SSB receiver noise in the mm band and 20-40 K SSB at sub millimeter wavelength are necessary. Finally the status of development of SIS receiver for mm and sum mm radio astronomy is presented." @default.
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- W2187680702 date "1998-01-01" @default.
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- W2187680702 title "OPTIMIZING RECEIVERS FOR GROUND BASED MM-WAVE RADIO TELESCOPES" @default.
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