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Information × Registration Number 0219U100651, 0117U006277 , R & D reports Title Creation of large antenna arrays mathematical model and its application to UTR-2 radio telescope ca;ibration. popup.stage_title Head Yerin Serhii M., Registration Date 22-02-2019 Organization Institute of Radio Astronomy of the NAS of Ukraine popup.description2  Ukrainian radio telescopes as the instruments of Universe explorations play a leading role in the worldwide science. Increasing the accuracy of radio astronomy sources emission flux densities measurements is the task of the first priority for astrophysical studies of many objects in our Universe. Calibration of the pointing system of UTR-2 radio telescope phased antenna array is a complex task because the characteristics of signal paths must be measured and determined in wide frequency range, for many directions of the array main beam and for signal paths of 2040 array elements of the radio telescope. The result of the project is the mathematical model of big phased antenna array phasing system which is based on the true time-delay of signals. The model is based on the data of characteristics measurements of real signal paths of phasing system of UTR-2 radio telescope Western arm. For these characteristics obtaining there were carried out several measurement sessions of the characteristics of separate elements and parts of signal paths in the pasing system of UTR-2 radio telescope. A large number of characteristics measurements of identical signal paths allowed obtaining statistical data on such measurements. The result of the work is a mathematical model which takes into account all characteristics of UTR-2 radio telescope West arm phasing system. This model will allow substantial increase the accuracy of radio astronomical sources real flux densities measurements for any phasing direction of the UTR-2 radio telescope given arm. Product Description popup.authors popup.nrat_date 2020-04-02 Close