测量射电望远镜接收系统稳定性的方法及软硬件复合体

Yuriy V. Vekshin
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引用次数: 0

摘要

射电望远镜在辐射观测中的灵敏度和射电干涉观测中信号延迟测量的精度在很大程度上取决于接收设备的振幅和相位不稳定性。为了确定这种不稳定性的来源,一项紧迫的任务是创造方法和设备来测量整个接收系统的不稳定性,特别是其各个阶段。本文介绍了一种开发的“类星体”VLBI网络射电望远镜接收系统的软硬件综合体、方法和振幅和相位稳定性的研究。确定了接收系统不稳定的主要来源和提高接收系统稳定性的途径。介绍了利用所建立的软硬件复合体得到的RT-13射电望远镜的实测特性。提出了一种确定射电干涉仪最佳信号平均时间的方法,减少了确定UT1 - UTC校正时的误差。多方面的
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Methods and a Hardware-Software Complex for Measuring the Stability of Radio Telescope Receiving Systems
Radio telescope sensitivity in radiometric observations and the accuracy of signal delay measurements in radio interferometric observations are largely determined by the amplitude and phase instability of the receiving equipment. To identify the sources of this instability, an urgent task is to create methods and equipment to measure the instability of the receiving system as a whole and its individual stages in particular. The paper presents a developed hardware-software complex, methods, and investigation of the amplitude and phase stability of the "Quasar" VLBI Network radio telescope receiving systems. The main sources of instability of the receiving systems and ways to improve their stability are determined. The measured RT-13 radio telescope characteristics obtained by the created hardware-software complex are presented. A method to determine the optimal signal averaging time of a radio interferometer has been developed, which reduces the error in determining the UT1 − UTC corrections. Multifaceted
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