function?[coefdif1?coefdif2]?=?cdecranabsorvente（?x?y?frequencia）
%
%?Gera玢o?dos?coeficientes?de?difrac琿a?D（teta）?e?Dt（teta）
%?para?ecran‘s?absorventes?tal?que:
%?Dt（teta）=D（teta）*F（S）??cont韓ua?e?tata?=?teta（xy）.
%
%?function?[coefdif1?coefdif2]?=?cdecranabsorvente（?x?y?frequencia）
%
%?coefdif1????:?Coeficiente?de?difra玢o?D（teta）;
%?coefdif2????:?Coeficiente?de?difra玢o?Dt（teta）;
%?x	????????:?Dist鈔cia?horizontal?da?descontinuidade?espacial;
%?y	????????:?Vector?com?as?eleva琿es?em?rela玢o?ao?plano?horizontal
%		??????????que?cont閙?a?descontinuidade?espacial?（edge）;
%?frequencia??:?Valor?da?frequencia?de?trabalho?（MHz）.
%

coefdif1?=?y*0;
coefdif2?=?y*0;
s?=?0;
tgteta2?=?0;
ro?=?0;
k?=?0;
fs?=?0;
lambda?=?300/frequencia;
beta?=?2*pi/lambda;
csi?=?0;
k1?=?0;
k2?=?0;
k3?=?-1/sqrt（2*pi*beta）;
f?=?0;
g?=?0;
num1?=?0;
den1?=?0;
num2?=?0;
den2?=?0;
cdaux?=?0;
num3?=?0;
den3?=?0;
costeta?=?0;
senteta?=?0;
for?k?=?1?:?length（y）
??ro?=?power（?（x*x?+?y（k）*y（k））?0.5）;
??tgteta2?=?power（?（y（k）/x）?2）;???
??s?=?beta*ro*tgteta2/2;
??k1?=?power（?（2*pi*s）?0.5）;
??csi?=?power（?（2*s/pi）?0.5）;
??num1?=?1?+?0.926*csi;
??den1?=?2?+?1.792*csi?+?3.104*power（?csi?2）;
??f?=?num1/den1;
??num2?=?1;
??den2?=?2?+?4.142*csi?+?3.492*power（?csi?2）?+?6.670*power（?csi?3）;
??g?=?num2/den2;
??k2?=?f?+?j*g;
??fs?=?k1*k2;
??costeta?=?x/ro;
??senteta?=?y（k）/ro;
??num3?=?1?+?costeta;
??den3?=?2*senteta;
??if?den3?~=?0
????coefdif1（k）?=?k3*num3/den3;
????coefdif2（k）?=?coefdif1（k）*fs;?
??else
????coefdif1（k）?=?k3*num3/den3;
????coefdif2（k）?=?0;??????
??end
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1636??2000-08-28?11:19??cdecranabsorvente.m
?????文件????????1212??2000-09-25?16:09??cunharecta.m
?????文件????????1043??2000-09-25?15:26??ecranabsorventefelsen.m
?????文件????????1147??2002-05-04?00:24??ecranabsorventegtd.m
?????文件????????1392??2000-09-24?22:24??ecranabsorventeutd.m
?????文件????????1103??2000-09-25?15:58??ecrancondutor.m
?????文件????????1424??2000-08-28?11:20??funcaotransicao.m
?????文件???????10151??2002-05-04?00:26??GTD-UTD-Difraction.jpg
?????文件???????16418??2002-05-04?00:36??JCarmo\Contribui琿es?para?a?Mathworks\SeveralMathFunctions.zip
?????文件?????????819??2002-05-04?00:22??transictionfunction_fs.m