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// Chapter 11 example 18
//------------------------------------------------------------------------------
clc;
clear;
// Given data
H = 35786; // ht of orbit from earth surface
Re = 6378 // radius of earth in kms
// Calculations
// For theoretical max coverage angle,elevation angle E = 0
E = 0
// max coverage angle = 2amax
// 2amax = 2asin(Re/(Re+H)cosE)
amax = 2*asin((Re/(Re+H))*cos(E))
amax_deg = amax*180/%pi // rad to deg conversion
D = sqrt( Re^2 + (Re+H)^2 - 2*Re*(Re + H)*asin(E + asin((Re/(Re+H))*cos(E)))) // Max slant range
// Output
mprintf('Maximum Coverage angle = %3.1f°\n Maximum slant Range = %d Km',amax_deg,D);
//--------------------------------------------------------------------------------
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