射电天文测量微波天线增益的测量技术

本文介绍了用四种定标基准ΔＴｃ＝（Ｔ０－ＴＬ），（ＴＨ－Ｔ０），（Ｔ０－ＴＡＮｚ）和（Ｔ０－ＴＨＮｚ），并用射电源作为校准测量微波天线增益的基本原理和方法。并对四种不同类型的天线增益进行了测量，测量结果表明，以ΔＴｃ＝（Ｔ０－ＴＨＮｚ）和总功率辐射计所组成的测量系统可实施增益的高精度测量。测量设备可以和接收系统兼容，不需专用测量设备，因此该技术可在工程中广泛使用。

Measurement Technique for the Measurement of Microwave Antenna Gain by Means of Radioastronomical Method

The basic principle and method of using the radio stars as calibration beacon in the measurement of microwave antenna gain are presented in this paper. in this method. four standards of calibration is used by respectively (T0-TL), (TH-T0), (T0-TANz) and (T0-TANz). The gain of four different type antennas are measured by means of calibration. The results of measurement show that the gain measured can assure high precision by using the measurement system to composed of total type radiometer and (T0-TANz).Measuring equipment gives consideration both reciever system and measuring equipment, It's not requirement for special measuring equipment. So, the techniqus is used widely in the project.