RT-32射电望远镜自动模式误差矩阵构造方法。跟踪错误的自动评估

Pub Date : 2021-01-01 DOI:10.15407/knit2021.06.053
V. Vlasenko, V. M. Mamarev, V. Ozhynsky, O. Ulyanov, V. Zakharenko, M. Palamar, A. Chaikovskyi, S. Fryz
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引用次数: 2

摘要

2021年3月15日,乌克兰国家空间设施控制和测试中心和乌克兰国家科学院射电天文研究所的科学家利用乌克兰新一代射电望远镜RT-32(利沃夫地区Zolochiv)进行了初步观测。观测并成功记录了射电星系3C84(英仙座- a)的河外辐射、星系分子云W3的脉泽、星系射电源G188.946 + 0.886的甲醇脉泽的射电发射。观测是作为乌克兰-拉脱维亚联合射电天文学项目lzp-2020/2-0121启动准备框架内的培训进行的。观测结果证实了RT-32射电望远镜的世界水平的特性,主要误差矩阵的效率,并揭示了跟踪系统在功能上的几个缺点。结果表明,主跟踪误差矩阵离散性不足,包含第一类和第二类误差。本文提出了一种根据接收机和接收机-记录仪数据自动构造射电望远镜误差矩阵的方法。该构造方法提供了获得的辐射测量数据的自动处理。给出了利用不同类型参考射电源对所提出方法进行验证的结果,以及利用所得到的仰角和方位角作为跟踪误差矩阵的元素。该方法得到的结果已应用于射电望远镜控制系统,提高了RT-32射电望远镜的瞄准精度。
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The method for RT-32 radio telescope error matrix construction in automatic mode. Automatic assesment of tracking errors
On March 15th, 2021, scientists of the National Space Facilities Control and Tests Center and the Radio Astronomical Institute of the National Academy of Sciences of Ukraine carried out preliminary observations with the Ukrainian new generation radio telescope RT-32 (Zolochiv, Lviv region). The extragalactic radiation of radio galaxy 3C84 (Perseus-A), masers from the galactic molecular cloud W3, radio emission of methanol maser from the galactic radio source G188.946 + 0.886 were observed and successfully recorded. Observations were performed as training in the framework of preparation for the launch of a joint Ukrainian-Latvian radio astronomy project lzp-2020/2-0121. The results of the observations confirmed the world level of RT-32 radio telescope characteristics, the efficiency of the primary error matrix and revealed several shortcomings in the functioning of the tracking system. It was found that the primary tracking error matrix has insufficient discreteness and contains errors of the first and second types. In the article, we present a method of automatic construction of the radio telescope error matrix according to the data of a radiometric receiver and receivers-recorders. The method of construction provides automatic processing of the obtained radiometric data. The results of verification of the developed method using the reference radio sources of different types and the elements of tracking errors’ matrix by the elevation and azimuth obtained when using it are presented. The results obtained with the proposed method were included in the radio telescope control system and allowed us to increase the aiming accuracy of the RT-32 radio telescope.
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