SETI strategy with FAST fractality  

作　　者：Yi-Xuan Chen Wen-Fei Liu Zhi-Song Zhang Tong-Jie Zhang 

机构地区：[1]Department of Astronomy,Beijing Normal University,Beijing 100875,China [2]College of Physics and Electronic Engineering,Qilu Normal University,Jinan 250200,China [3]National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

出　　处：《Research in Astronomy and Astrophysics》2021年第7期234-240,共7页天文和天体物理学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.11929301);National Key R&D Program of China(2017YFA0402600)。

摘　　要：We applied the Koch snowflake fractal antenna in planning calibration of the Five-hundred-meter Aperture Spherical radio Telescope(FAST), hypothesizing second-order fractal primary reflectors can optimize the orientated sensitivity of the telescope. Meanwhile, on the grounds of NASA Science Working Group Report in 1984, we reexamine the strategy of Search for Extraterrestrial Intelligence(SETI).A mathematical analysis of the radar equation will be performed in the first section, aiming to make it convenient to design a receiver system that can detect activities of an extraterrestrial civilization, according to the observable region of the narrowband. Taking advantage of the inherent potential of FAST, we simulate the theoretical detection of a Kardashev Type I civilization by a snowflake-selected reflecting area(Drake et al.).

关 键 词：SETI FAST fractal antennae 

分 类 号：P111.44[天文地球—天文学]