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Diffstat (limited to '2219/CH13/EX13.3/Ex13_3.sce')
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diff --git a/2219/CH13/EX13.3/Ex13_3.sce b/2219/CH13/EX13.3/Ex13_3.sce new file mode 100755 index 000000000..a19ae197b --- /dev/null +++ b/2219/CH13/EX13.3/Ex13_3.sce @@ -0,0 +1,22 @@ +//Chapter 13 example 3
+//------------------------------------------------------------------------------
+clc;
+clear;
+// Given data
+f = 4.5; // microwave terrestrial comm link oper. freq in Ghz
+D = 40; // single hop path length in miles
+hant = 200; // antenna ht. above surface of earth
+// from fig
+D1 = 5;
+D2 = 35;
+K = 2/3; // K-factor
+
+// calculations
+F1 = 72.2*((D1*D2)/(D*f))^0.5; // first fresnel zone
+// computing curvature 'h' of earth at a distance of 10 miles from Transmitter if given by (D1*D2)/(1.5*K)
+h = (D1*D2)/(1.5*K); // curvature of earth in feet
+PLabove = hant - h; // path line is PLabove feet above surface of earth
+if PLabove < F1 then
+ mprintf('Available clearance above the surface of earth = %d feet\n Required first fresnal zone clearance = %3.1f feet,So it would be obstructed',PLabove,F1 )
+end
+//------------------------------------------------------------------------------
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