Preliminary study of radio astronomical lines effect of rain below 2.9 GHZ

Roslan Umar, Nor Hazmin Sabri, Zamri Zainal Abidin, Zainol Abidin Ibrahim, Azman Azid, Hafizan Juahir, Mohd. Ekhwan Toriman, Mohd Khairul Amri Kamarudin

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

An appropriate site selection for radio astronomy observation is very important in order to find a low level site in RFI value. The aim of this study is to select the best possible factors for astronomical observation sites. There are many factors such as slope, raindrop, river, population density, road network, land used, wireless telephone technology interrupts radio astronomy observation. In this study, we have reported one of the factors that affect radio observation which is rain effect. The site selection study is the most crucial part of decision makers proposes where to build an astronomical observatory, especially in radio astronomy with a maximum efficiency. The observation apparatus was set up to study the effect of rainfall and raindrop to the radio signal. We found that, in the inside observation, we found that spectral lines (Deuterium, Hydrogen, and two Hydroxyl lines) show that the rain gives no effect to radio signal in those windows. We also found that there is very small fluctuate value are very small (about -2 dB) for outside observation. It can be considered has no significant effect on rain below 2.9 GHz.

Original languageEnglish
Pages (from-to)7-11
Number of pages5
JournalJurnal Teknologi
Volume75
Issue number1
Publication statusPublished - 1 Jul 2015
Externally publishedYes

Fingerprint

Radio astronomy
Rain
Site selection
Observatories
Deuterium
Telephone
Rivers
Hydrogen

Keywords

  • Radio astronomy
  • Radio frequency interference
  • Rain effect
  • Site selection

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Umar, R., Sabri, N. H., Abidin, Z. Z., Ibrahim, Z. A., Azid, A., Juahir, H., ... Kamarudin, M. K. A. (2015). Preliminary study of radio astronomical lines effect of rain below 2.9 GHZ. Jurnal Teknologi, 75(1), 7-11.

Preliminary study of radio astronomical lines effect of rain below 2.9 GHZ. / Umar, Roslan; Sabri, Nor Hazmin; Abidin, Zamri Zainal; Ibrahim, Zainol Abidin; Azid, Azman; Juahir, Hafizan; Toriman, Mohd. Ekhwan; Kamarudin, Mohd Khairul Amri.

In: Jurnal Teknologi, Vol. 75, No. 1, 01.07.2015, p. 7-11.

Research output: Contribution to journalArticle

Umar, R, Sabri, NH, Abidin, ZZ, Ibrahim, ZA, Azid, A, Juahir, H, Toriman, ME & Kamarudin, MKA 2015, 'Preliminary study of radio astronomical lines effect of rain below 2.9 GHZ', Jurnal Teknologi, vol. 75, no. 1, pp. 7-11.
Umar R, Sabri NH, Abidin ZZ, Ibrahim ZA, Azid A, Juahir H et al. Preliminary study of radio astronomical lines effect of rain below 2.9 GHZ. Jurnal Teknologi. 2015 Jul 1;75(1):7-11.
Umar, Roslan ; Sabri, Nor Hazmin ; Abidin, Zamri Zainal ; Ibrahim, Zainol Abidin ; Azid, Azman ; Juahir, Hafizan ; Toriman, Mohd. Ekhwan ; Kamarudin, Mohd Khairul Amri. / Preliminary study of radio astronomical lines effect of rain below 2.9 GHZ. In: Jurnal Teknologi. 2015 ; Vol. 75, No. 1. pp. 7-11.
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