Data extraction for 20 MHz antenna signals of solar bursts type III 1 and type III 2

العناوين الأخرى

استخلاص البيانات ل 20 ميغهيرتز اشارة الهوائي للنبضات الشمسية من نوع III و 2 III 1

مقدم أطروحة جامعية

Ashur, Samir Faiq

مشرف أطروحة جامعية

Abbud, Kamal Muhammad

أعضاء اللجنة

al-Birmani, Muhammad Jafar Fadil
al-Abbudi, Bushra Qasim
Kazim, Ala Baqir

الجامعة

جامعة بغداد

الكلية

كلية العلوم

القسم الأكاديمي

قسم الفلك و الفضاء

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2013

الملخص الإنجليزي

In this work we studied Solar Radio Bursts were amongst the first phenomena identified as targets for radio astronomy.

Solar radio bursts at frequencies below a few hundred MHz were classified into 5 types in the 1960s:- Type I, Type II, Type III, Type IV, and Type V.

The classification of radio burst is based primarily on its appearance on a dynamic spectrum.

We have studied, analyzed these bursts and identified the significant frequencies and classified it especially of Type III bursts are the most common type of solar radio activity; they are referred to as fast drift bursts from high to lower frequencies, this type divided into two types are :- Type III/1 and Type III/2 .

We have opened the files in extension *.spd (Sky Pipe Data) of type III bursts by writing a Visual Basic language program then using MATLAB language to find Fast Fourier Transform (FFT), Power Spectral Density (PSD) and the significant frequencies of type III solar radio bursts.

The Results showed that the significant frequencies of the solar radio burst for type III/1 found to be within the range of (170Hz ≤ ƒ ≤ 195Hz), while that for type III/2 found to be within the range of (60 Hz ≤ ƒ ≤ 85 Hz).

التخصصات الرئيسية

الفلك و علومه

الموضوعات

• علم الفلك
• القياس

عدد الصفحات

81

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-604320