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Radio quiet and radio notification zones characteristics for radio astronomy in medium densely populated areas and humid tropical countries

This study proposes general criteria to identify a radio quiet zone (RQZ) and a radio notification zone (RNZ) for the installation of a radio astronomical observatory on-site and safeguard the radio astronomy spectrum specifically in tropical regions. This study focuses on areas with a medium popula...

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Main Authors: Abidin, Zamri Zainal, Rosli, Zulfazli, Radzi, Mohd Shazwan Mohd, Shah, Noraisyah Mohamed, Dahari, Mahidzal, Ramadhani, Farah, Ghazali, Mohd Ifwat Mohd, Azarbad, Bahman, Ibrahim, Ungku Ferwani Salwa Ungku, Hashim, Norsiah
Format: Article
Published: Spie-Soc Photo-Optical Instrumentation Engineers 2021
Subjects:
QC Physics
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.um.edu.my/34310/
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spelling my.um.eprints.343102022-09-09T08:08:47Z http://eprints.um.edu.my/34310/ Radio quiet and radio notification zones characteristics for radio astronomy in medium densely populated areas and humid tropical countries Abidin, Zamri Zainal Rosli, Zulfazli Radzi, Mohd Shazwan Mohd Shah, Noraisyah Mohamed Dahari, Mahidzal Ramadhani, Farah Ghazali, Mohd Ifwat Mohd Azarbad, Bahman Ibrahim, Ungku Ferwani Salwa Ungku Hashim, Norsiah QC Physics TA Engineering (General). Civil engineering (General) This study proposes general criteria to identify a radio quiet zone (RQZ) and a radio notification zone (RNZ) for the installation of a radio astronomical observatory on-site and safeguard the radio astronomy spectrum specifically in tropical regions. This study focuses on areas with a medium population density. Most RQZs selected in the world are mainly located in regions with a low population density, whereas this work studies the radio frequency interference (RFI) environment in humid tropical regions that have not been studied. The humidity in the tropical regions has a significant effect on radio signal, and this provides a unique perspective to the study. This study implements an algorithm to model the RFI level by considering important humidity factors. The ideal sites are chosen based on the RQZs criteria, whereas the realistic sites are based on the RNZs criteria. In Malaysia, four ideal and another four realistic candidate sites were identified, and the on-site RFI level measurement was conducted. From this study, Kuala Tembeling site is suggested as the RQZ and the Jelebu site as the RNZ in Malaysia. (C) 2021 Society of Photo-Optical Instrumentation Engineers (SPIE) Spie-Soc Photo-Optical Instrumentation Engineers 2021-04 Article PeerReviewed Abidin, Zamri Zainal and Rosli, Zulfazli and Radzi, Mohd Shazwan Mohd and Shah, Noraisyah Mohamed and Dahari, Mahidzal and Ramadhani, Farah and Ghazali, Mohd Ifwat Mohd and Azarbad, Bahman and Ibrahim, Ungku Ferwani Salwa Ungku and Hashim, Norsiah (2021) Radio quiet and radio notification zones characteristics for radio astronomy in medium densely populated areas and humid tropical countries. Journal of Astronomical Telescopes Instruments and Systems, 7 (2). ISSN 2329-4124, DOI https://doi.org/10.1117/1.JATIS.7.2.027001 <https://doi.org/10.1117/1.JATIS.7.2.027001>. 10.1117/1.JATIS.7.2.027001
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QC Physics
TA Engineering (General). Civil engineering (General)
spellingShingle QC Physics
TA Engineering (General). Civil engineering (General)
Abidin, Zamri Zainal
Rosli, Zulfazli
Radzi, Mohd Shazwan Mohd
Shah, Noraisyah Mohamed
Dahari, Mahidzal
Ramadhani, Farah
Ghazali, Mohd Ifwat Mohd
Azarbad, Bahman
Ibrahim, Ungku Ferwani Salwa Ungku
Hashim, Norsiah
Radio quiet and radio notification zones characteristics for radio astronomy in medium densely populated areas and humid tropical countries
description This study proposes general criteria to identify a radio quiet zone (RQZ) and a radio notification zone (RNZ) for the installation of a radio astronomical observatory on-site and safeguard the radio astronomy spectrum specifically in tropical regions. This study focuses on areas with a medium population density. Most RQZs selected in the world are mainly located in regions with a low population density, whereas this work studies the radio frequency interference (RFI) environment in humid tropical regions that have not been studied. The humidity in the tropical regions has a significant effect on radio signal, and this provides a unique perspective to the study. This study implements an algorithm to model the RFI level by considering important humidity factors. The ideal sites are chosen based on the RQZs criteria, whereas the realistic sites are based on the RNZs criteria. In Malaysia, four ideal and another four realistic candidate sites were identified, and the on-site RFI level measurement was conducted. From this study, Kuala Tembeling site is suggested as the RQZ and the Jelebu site as the RNZ in Malaysia. (C) 2021 Society of Photo-Optical Instrumentation Engineers (SPIE)
format Article
author Abidin, Zamri Zainal
Rosli, Zulfazli
Radzi, Mohd Shazwan Mohd
Shah, Noraisyah Mohamed
Dahari, Mahidzal
Ramadhani, Farah
Ghazali, Mohd Ifwat Mohd
Azarbad, Bahman
Ibrahim, Ungku Ferwani Salwa Ungku
Hashim, Norsiah
author_facet Abidin, Zamri Zainal
Rosli, Zulfazli
Radzi, Mohd Shazwan Mohd
Shah, Noraisyah Mohamed
Dahari, Mahidzal
Ramadhani, Farah
Ghazali, Mohd Ifwat Mohd
Azarbad, Bahman
Ibrahim, Ungku Ferwani Salwa Ungku
Hashim, Norsiah
author_sort Abidin, Zamri Zainal
title Radio quiet and radio notification zones characteristics for radio astronomy in medium densely populated areas and humid tropical countries
title_short Radio quiet and radio notification zones characteristics for radio astronomy in medium densely populated areas and humid tropical countries
title_full Radio quiet and radio notification zones characteristics for radio astronomy in medium densely populated areas and humid tropical countries
title_fullStr Radio quiet and radio notification zones characteristics for radio astronomy in medium densely populated areas and humid tropical countries
title_full_unstemmed Radio quiet and radio notification zones characteristics for radio astronomy in medium densely populated areas and humid tropical countries
title_sort radio quiet and radio notification zones characteristics for radio astronomy in medium densely populated areas and humid tropical countries
publisher Spie-Soc Photo-Optical Instrumentation Engineers
publishDate 2021
url http://eprints.um.edu.my/34310/
_version_ 1744649171147685888
score 13.211869

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