Sun is constantly produced mass and radiation during its natural activities, which will interact with ionosphere and affect the earth weather. In radio astronomer community, CALLISTO is used to capture the radio signal comes from solar activities such as solar burst. Solar flares and Coronal Mass Ejections (CMEs) were closely associated with the production of solar radio burst Type II and III. However, the determination of solar burst existence is done manually using spectrograph which appears for every 15 minutes. In order to assist the solar radio researcher to speed up the process of solar burst identification and detection, this work presents a new algorithm to auto classify solar radio burst Type II and III. The value of frequency drift was used as the main idea in this auto classify algorithm because it can easily implemented using MATLAB. There are three main steps involved named as pre-processing, identification and classification. Auto calculation of frequency drift burst on spectra was obtained from two parts which are frequency axis (df) and time axis (dt). The results of the frequency drift implementation in classification algorithm show that the algorithm developed gave almost similar determination as in manual detection. However, there are always have rooms for improvement for better detection system in future which may include specific characterization of bursts and improved noise elimination.
The occasion of the partial solar eclipse in Malaysia occurred on 9th March 2016 covered almost 67% to 80% of the whole Sun. During the maximum time of the partial solar eclipse, some of the solar emission and sunlight was blocked to reach the Earth's surface. In order to see this effect to a radio signal, the analysis of radio signal pattern before and during the solar eclipse at Balai Cerap KUSZA, Merang, Terengganu was done. The radio signal measurement was taken in the wideband frequency region from 0Hz to 9GHz. The radio signal data had been analysis to compare between before and during the eclipse by calculating their average. Initial analysis shows that there a different number of peak signal between two observations. Then, the solar radiation data during the partial solar eclipse also was analysed. Furthermore, solar events data from National Oceanic and Atmospheric Administration (NOAA) also added into this work. It shows that there not enough prove that the partial solar eclipse affects the radio signal pattern.
Solar radio burst study is one of the new researches done in radio astronomy field in Malaysia. Solar radio burst is associated with Coronal Mass Ejections (CMEs). It occurs when magnetic storm collides with Earth's magnetosphere. In this paper, we present the level of radio frequency interference (RFI) at selected sites in Malaysia; ESERI (ECE), Balai Cerap KUSZA (BCK), Sungai Chantek (SGC) and Hentian Serdang (HSRDG) focusing on wideband (30kHz-1000 MHz. The threshold for all selected sites is-76.3741 dBm (7.3887),-74.4022 dBm (9.8143),-73.736 dBm (9.4494) and-66.4082 dBm (13.4290) respectively. This study was done to survey the status of frequency allocation in Malaysia for radio astronomy study. In this frequency ranges, radio astronomical sources found are pulsar, deuterium line (DI) and solar radio burst. These radio astronomical sources can be studied best at BCK compared to other sites. This is important to radio astronomer in Malaysia especially in solar burst detection to identify the best site for observation. This study also may provide RFI database to radio astronomers to refer to before conducting an observation.
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