3mm波段改进型全功率辐射计

An Improved 3mm Band Total Power Radiometer

本文分析了全功率计和Dicke辐射计的优缺点,提出了改善全功率辐射计输出幅度存在漂移的方法,使全功率制式的3mm辐射计成功应用于1.2M射电望远镜上.取得了初步观测结果。特别指出,该制式在实现太阳射电的快速测量方面,具有系统电路简单,预期软件编制容易的优点。已经模拟实验证明,系统可实现小于毫秒量级的快速测量。

Advanlages and weaknesses of both the Total Power and Dicke Radiometers are analysed m this paper. A method is proposed to remove the drift of ontput amplitude of the tal power radiometer. A 3mm band total power radiometer is successfully used in the 1.2M radi scope The intial observational results are obtained. It shcould be pointed out that the circuit and sortware are easier to realize high—speed measurement in the solar radio. A simulated test is used to verify the result that the radiometer can receive hihg-speed information in less than one il lisecond