A Monte-Carlo simulation-based evaluation model for the reflection signal reception effect of the FAST

Junbo Wen; Shiyu Zhang; Hao Lin

doi:10.1117/12.2643598

9 October 2022 A Monte-Carlo simulation-based evaluation model for the reflection signal reception effect of the FAST

Junbo Wen, Shiyu Zhang, Hao Lin

Proceedings Volume 12246, 2nd International Conference on Signal Image Processing and Communication (ICSIPC 2022); 122460R (2022) https://doi.org/10.1117/12.2643598
Event: 2nd International Conference on Signal Image Processing and Communication (ICSIPC 2022), 2022, Qingdao, China

Abstract

The reception effect of celestial electromagnetic wave reflected by reflector is an important indicator to evaluate the performance of radio telescope. In this study, we present a model based on Monte Carlo to evaluate the reception effect of reflected signals. Taking the FAST as an example, firstly, the reflected light of each reflection panel has a certain projection area on the plane where the effective area of the signal received by the feed cabin is located. Considering the different cases where the reflected signal projection overlaps the plane of the feed cabin, Monte Carlo method is used to simulate the case of the reflected signal received by the feed cabin. Then, combined with boundary conditions, the triangular reflector within the target range is traversed and searched. Finally, the reception ratios of the feed cabin and the datum sphere are calculated. By analyzing their electromagnetic wave receiving effects, we find that the reception ratio of the feed cabin is greater than that of the datum sphere. The evaluation model of the reception effect of reflected signals proposed in this paper has certain reference value for realistic modulated radio telescope observation of celestial objects.

Citation Download Citation

Junbo Wen, Shiyu Zhang, and Hao Lin "A Monte-Carlo simulation-based evaluation model for the reflection signal reception effect of the FAST", Proc. SPIE 12246, 2nd International Conference on Signal Image Processing and Communication (ICSIPC 2022), 122460R (9 October 2022); https://doi.org/10.1117/12.2643598

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KEYWORDS

Reflectivity

Optical spheres

Monte Carlo methods

Electromagnetic radiation

Reflectors

Mathematical modeling

Radio telescopes

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