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+//Chapter-4 example 4.2

+//=============================================================================

+clc;

+clear;

+//input data

+F       = 1*10^9;       //operating frequency of monopulse radar in Hz

+Vo      = 3*10^8;       //velocity of EM wave in m/s

+theta_d   = 10          //angle blw los and perpendicular bisector of line joining two antennas

+PD_d    = 20;           //phase difference in degrees

+

+// calculations

+lamda = Vo/F            //wavelength in m

+//PD  = (2*%pi/lamda)*(d*sin(theta));

+theta_r   = theta_d*(%pi/180)   //degree to radian conversion

+PD_r      = PD_d*(%pi/180)      //degree to radian conversion

+d         = (PD_r*lamda)/(2*%pi*sin(theta_r));

+

+//output

+mprintf('Spacing between the antennas is %3.2f cms',d*100);

+

+//===============end of the program============================================