| Summary: | 碩士 === 國立中央大學 === 太空科學研究所 === 82 === The pioneering works of Appleton, Breit, Tuve and Chapman
established the prelimanary theories and the experimental
methods of the terrestrial ionosphere. Following their works,
numerous investigators devoted themself to develop more
advanced theories and observational techniques for ionospheric
research and founded the field of ionospheric physics. Despite
the expensive in-situ measurements of rocket or satellite, the
most economic and effective observational tool for ionospehric
study is ground-based facility, namely, radar. The advent of
incoherent scatter radar (ISR) makes the simultaneous
measurement of various ionospheric paramenter, such as electron
density, plasma temperature, plasma drift velocity, ect.,
possible. In this thesis, we review some basic theories about
ISR andintroduce the characteristics of existing ISR facilities
distributed world wide, which are still in operation. We
develop the effectived program to calculate the theoretical
spectra of ISR. We also study the relations between
ionospheric parameters such as electron density (Ne), electron
temperature (Te), ion temperature (Ti) and their temperature
ratio (Tr) and spectral behaviors using of fitting methods and
theoretic derivations. Furthermore, we compare the estimating
results of analyzing the observed data from Millstone Hill with
the International ReferenceIonosphere (IRI-90) which is an
empirical model of monthly mean data. This thesis is the first
one dealing with the analysis and process of the observed
incoherent scatter radar data in Taiwan.
|
|---|
