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首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing. >A Miniaturized Spectrometer Radiometer Based on MMIC Technology for Tropospheric Water Vapor Profiling
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A Miniaturized Spectrometer Radiometer Based on MMIC Technology for Tropospheric Water Vapor Profiling

机译：基于MMIC技术的对流层水汽谱仪的小型化辐射计。

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摘要

The fabrication of a miniaturized ground-based water vapor profiling radiometer demonstrates the capability of monolithic microwave and millimeter-wave integrated circuit technology to reduce the mass and volume of microwave remote sensing instrumentation and to reduce substantially the necessary operational power consumption and size of the radio-frequency and intermediate-frequency sections. Since those sections comprise much of the mass and volume of current microwave receivers, the fabrication of this system represents an important contribution to the design of microwave radiometers. This miniaturized radiometer implementation is particularly well suited to benefit from the cost savings associated with mass production. The small size of the radiometer (24 $times$ 18 $times$ 16 cm) reduces the power required by the temperature control system and allows a rapid warm-up to the temperature set point as well as maintenance of a highly stable internal temperature. Exhibiting very similar statistical properties, the four channels of the radiometer have measured Allan times of greater than 40 s. Measurement results demonstrate that the instrument achieves a sensitivity of better than 0.2 K for 3 s of integration time. Preliminary comparisons of measured brightness temperatures with simulation results based on radiosonde data show good agreement, which are consistent with previously reported results.
机译：微型地面水蒸气轮廓辐射计的制造证明了单片微波和毫米波集成电路技术能够减少微波遥感仪器的质量和体积，并显着减少必要的操作功耗和无线电装置的尺寸-中频部分。由于这些部分占据了当前微波接收器的大部分质量和体积，因此该系统的制造对微波辐射计的设计做出了重要贡献。这种小型化的辐射计特别适合从批量生产相关的成本节省中受益。辐射计的小尺寸（24 x 18 x 16厘米）减少了温度控制系统所需的功率，可快速预热至温度设定点并保持内部高度稳定的温度。由于具有非常相似的统计特性，辐射计的四个通道测得的Allan时间均大于40 s。测量结果表明，该仪器在3 s的积分时间内可达到优于0.2 K的灵敏度。测得的亮度温度与基于探空仪数据的模拟结果的初步比较显示出很好的一致性，与先前报道的结果一致。

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