HF propagation studies using PC`s

Abstract

ABSTRACT HF PROPAGATION STUDIES USING PC': HEP8AYDIR, Erol M. S. in El ec t r i cal an d El ec t r o n i es En g. M i ddl e Eas t Techn i cal Un i ver s i ty, An k ar a Su per m i so r s Pr of. Tu n cay B i r an d Co-superv isor s Assoc. Prof. Altunkan Hızal December 1387, 110 pages HF prediction studies making use of personal comp u t er s hav e been car r i ed out. Rel e v an t comp u t er p r o gr arrıs wer e wr itten in the ` Bas i c ` ' p r o gr arnrn i n g 1 an gu age for the HP981S personal computer. The algorithms used in the program are described in related chapters. Outputs of sample runs related to MUF-LUF, sky wave signal, noise level, S/N and g r o u n d w a v e t r a n sm i s s i o n loss calculations are presented. The outputs of MÎNIMUF 3.5 and QLOF are compared with the outputs of some larger HF. prediction programs. It has been shown that these PC HF prediction programs can be used to generate first order MUF-LUF estimates. A sub-program making use of K. Norton's formula was incorporated into the existing HF PC prediction p r o gr am t o ex tend the cap ab i 1 i t i es. Us i n g t h i s su b- p r o g r am s am pie outputs regarding g r o u n d w a v e t r a n sm i s s i o n losses have been obtained. -Ill-çıktıları da tezde gösterilmiştir. An ah t ar Kel i mel er : ön gö r ü » M I N I MUF 3. 5, QLOF, EYKF, EDKF, YF öngörü programları, gök dalgası, yer dalgası, iletişim kaybı, kişisel bi lgi sayar -VI-

ABSTRACT HF PROPAGATION STUDIES USING PC': HEP8AYDIR, Erol M. S. in El ec t r i cal an d El ec t r o n i es En g. M i ddl e Eas t Techn i cal Un i ver s i ty, An k ar a Su per m i so r s Pr of. Tu n cay B i r an d Co-superv isor s Assoc. Prof. Altunkan Hızal December 1387, 110 pages HF prediction studies making use of personal comp u t er s hav e been car r i ed out. Rel e v an t comp u t er p r o gr arrıs wer e wr itten in the ` Bas i c ` ' p r o gr arnrn i n g 1 an gu age for the HP981S personal computer. The algorithms used in the program are described in related chapters. Outputs of sample runs related to MUF-LUF, sky wave signal, noise level, S/N and g r o u n d w a v e t r a n sm i s s i o n loss calculations are presented. The outputs of MÎNIMUF 3.5 and QLOF are compared with the outputs of some larger HF. prediction programs. It has been shown that these PC HF prediction programs can be used to generate first order MUF-LUF estimates. A sub-program making use of K. Norton's formula was incorporated into the existing HF PC prediction p r o gr am t o ex tend the cap ab i 1 i t i es. Us i n g t h i s su b- p r o g r am s am pie outputs regarding g r o u n d w a v e t r a n sm i s s i o n losses have been obtained. -Ill-Key wprds : Prediction, HINIMUF 3.5, QLOF, MUF, LUF, HF p r e d i c t i o n p r o g r ara s, s k y w a v e, g r o u n dw a y e, t r a n srn i s s i o n l o s s, P C