Date of Publication

5-2011

Document Type

Master's Thesis

Degree Name

Master of Science in Physics

Subject Categories

Physics

College

College of Science

Department/Unit

Physics

Thesis Adviser

Edgar A. Vallar

Defense Panel Chair

Gil Nonato C. Santos

Defense Panel Member

Gerry Bagtasa
Ernest P. Macalalad

Abstract/Summary

Ionospheric scintillation has been studied intensively because it depreciates the satellite radio communication and navigational system performances. Scintillations are most severe at the equatorial anomaly region that corresponds to two belts, approximately 15oN and S of the magnetic equator. The Low-latitude Ionospheric Tomography Network (LITN) consists of ground stations extend at the northern latitude along ~120°E longitude. The LITN was established to focus on the equatorial anomaly dynamics. This study of the equatorial scintillation was achieved by examining the amplitude scintillation index S4. A computer application was designed to acquire and process data from the LITN to detect scintillation occurrences. Parameters such as amplitude scintillation index S4, elevation angle, satellite, date, time, receiver ground station, and geographical location are important for amplitude scintillation observation. Scintillation variations with operating frequency, local time, geographical location, solar and magnetic activity were observed. Ionospheric irregularity near the magnetic equator is associated with the Rayleigh-Taylor instability processes. Solar activity and magnetic activity result in the ionization and composition changes in the ionosphere.

Abstract Format

html

Language

English

Format

Electronic

Electronic File Format

MS WORD

Accession Number

CDTG004938

Shelf Location

Archives, The Learning Commons, 12F Henry Sy Sr. Hall

Physical Description

1 computer optical disc, 4 3/4 in.

Keywords

Ionosphere; Radio waves—Scintillation

Upload Full Text

wf_yes

Embargo Period

4-28-2022

Download

Share

COinS