Abstract
The proposed 110-m full-steerable radio telescope (Qitai radio telescope, QTT) in Xinjiang is mainly used in the fields of basic scientific research, such as pulsar observation, gravitational wave and black hole detection, star formation, galactic origin. At the same time, it serves national projects such as China Lunar Exploration project and Mars exploration. In order to meet the scientific needs, QTT will be equipped with a variety of ultra-wideband, multi-beam, high-sensitivity receivers and signal processing systems, to treat the weak electromagnetic wave signal received by the radio telescope, such as amplification, filtering, frequency conversion and other processing and sending to the digital terminal and processed. As this system determines the operating bandwidth, instantaneous bandwidth and field of view of radio telescopes, and is closely related to sensitivity, as a key part of the large radio telescope, it plays an important role in the performance of telescopes. In this paper, the configuration scheme and main performance index of QTT UWB and multi-beam signal receiving and processing system are demonstrated in detail. This paper systematically discusses the preliminary technical scheme of QTT receiver and signal acquisition and processing system, and analyzes the key technical problems of signal receiving and processing system.
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