Calibration source microwave window of microwave radiometer
A microwave radiometer and microwave radiation technology, which is applied in the direction of measuring devices, instruments, and measuring electrical variables, can solve the problems of unsatisfactory microwave window filling uniformity, poor versatility and flexibility, and large emissivity measurement errors. Achieve good heat insulation effect, flexible combination, and reduce measurement error
Inactive Publication Date: 2012-12-05
中国航天科工集团第二研究院二〇三所
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The invention discloses a calibration source microwave window of a microwave radiometer. The calibration source microwave window comprises a tapered gradual change array (1), a tapered hollow gradual change array (2) and a fastening frame (3), wherein the tapered hollow gradual change array (2) is formed by combining 2*n subunits; the tapered gradual change array (1) is molded by integrally machining a whole piece of polystyrene; and the fastening frame (3) is molded by integrally machining polystyrene. 2*n subunits are arranged together so as to form the tapered hollow gradual change array (2); a bright temperature signal radiated from a microwave radiator firstly passes through the tapered hollow gradual change array (2) which is tightly contacted with the microwave radiator, subsequently passes through the tapered gradual change array (1), and finally reaches an outfit plane of the calibrated radiometer so as to accomplish the calibration of the radiometer. The calibration source microwave window has the characteristics of good heat insulation effect, flexible combination mode and strong generality; and moreover, the smooth transition from air characteristic impedance to polystyrene characteristic impedance is achieved; and the measurement error of reflection coefficient of the radiator is reduced effectively.
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Technology Topic
Reflection coefficientMicrowave radiometer +5
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