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Diffstat (limited to '2409/CH2/EX2.20')
-rwxr-xr-x | 2409/CH2/EX2.20/Ex2_20.sce | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/2409/CH2/EX2.20/Ex2_20.sce b/2409/CH2/EX2.20/Ex2_20.sce new file mode 100755 index 000000000..7c4788bb5 --- /dev/null +++ b/2409/CH2/EX2.20/Ex2_20.sce @@ -0,0 +1,68 @@ + +//Variable Declaration + +PI=-1280 //I component of range vector for a satellite(km) +PJ=-1278 //J component of range vector for a satellite(km) +PK=66 //K component of range vector for a satellite(km) +GST=240 //GST(degrees) +LE=48.42 //Latitude(Degrees) +PE=-89.26 //Longitude(Degrees) +H=200 //Height above mean sea level(metres) +aE=6378.1414 //Semimajor axis(km) +eE=0.08182 //Eccentricity + + +//Calculation + +l=(aE/sqrt(1-eE**2*sin(LE*3.142/180)**2)+H/1000)*cos(LE*3.142/180) +z=((aE*(1-eE**2))/sqrt(1-eE**2*sin(LE*3.142/180)**2)+H/1000)*sin(LE*3.142/180) +SE=(atan(z/l))*180/3.142 //Geocentric latitude angle (degrees) +LST=240+PE + + +a=sin(SE*3.142/180)*cos(LST*3.142/180) +b=sin(SE*3.142/180)*sin(LST*3.142/180) +c=-cos(SE*3.142/180) +d=-sin(LST*3.142/180) +e=cos(LST*3.142/180) +f=0 +g=cos(SE*3.142/180)*cos(LST*3.142/180) +h=cos(SE*3.142/180)*sin(LST*3.142/180) +i=sin(SE*3.142/180) + +D = [a,b,c;d,e,f;g,h,i] + +P= [PI;PJ;PK] + +R=D*P //Components of range of earth station +Ro=sqrt(R(1,1)**2+R(2,1)**2+R(3,1)**2) //Magnitude of range of earth station(km) +El=asin(R(3,1)/Ro) //Antenna elevation angle for the earth station(radians) +El= El*180/3.142 //Converting El to degrees +alpha=(atan(R(2,1)/R(3,1)))*180/3.142 + +if ( R(1,1)<0 & R(2,1)>0 ) then + Aza=alpha +else + Aza=0 +end +if ( R(1,1)>0 & R(2,1)>0 ) then + Azb=180-alpha +else: + Azb=0 +end + +if ( R(1,1)>0 & R(2,1)<0 ) then + Azc=180+alpha +else + Azc=0 +end +if ( R(1,1)<0 & R(2,1)<0 ) then + Azd=360-alpha +else + Azd=0 +end +Az= Aza+Azb+Azc+Azd //Azimuth angle (degrees) + +printf("The magnitude of range of earth station is %.0f km",Ro) +printf("\nThe antenna elevation angle for the earth station are %.f degrees",El) +printf("\nThe Azimuth angle for the earth station is %.2f degrees",Az) |