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diff --git a/1997/CH3/EX3.1/example1.sce b/1997/CH3/EX3.1/example1.sce
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+//Chapter-3, Problem 3.1 , Page104

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

+clc;

+clear;

+

+//INPUT DATA

+PRF= 1500;//pulse repetitive frequency in Hz

+lamda = 3*10^-2;//wavelength in m;

+

+//Calculations

+//n =1 gives lowest blind speed

+n=1;

+

+Vb = n*(lamda/2)*PRF;//blind speed in m/s

+

+

+//Output

+mprintf('Lowest Blind Speed is %g m/s',Vb);

diff --git a/1997/CH3/EX3.10/example10.sce b/1997/CH3/EX3.10/example10.sce
new file mode 100755
index 000000000..2877975eb
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+++ b/1997/CH3/EX3.10/example10.sce
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+//Chapter-3 example 10

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

+clc;

+clear;

+//input data

+r             = 0.5;            //Antenna Radius in m

+f             = 8*10^9          //operating frequency in Hz

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

+RCS           = 5;              // Radar cross section in m^2

+D             = 1;              // antenna diameter in m

+F             = 4.77;              // noise figure in dB

+Rmax          = 12*10^3         // Radar range

+BW            = 500*10^3;       // bandwidth

+

+//Calculation

+F1            = 10^(F/10)       // antilog calculation

+lamda         = Vo/f            // wavelength

+

+//Rmax        = 48*((Pt*D^4*RCS)/(BW*lamda*lamda(F-1)))^0.25

+

+Pt            = ((Rmax/48)^4)*((BW*lamda*lamda*(F1-1))/(D^4*RCS))

+

+//Output

+mprintf('Peak Transmitted Power is %e',Pt);

+mprintf('\n Note: Calculation error in textbook at Pt 10^12 missing')

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

diff --git a/1997/CH3/EX3.2/example2.sce b/1997/CH3/EX3.2/example2.sce
new file mode 100755
index 000000000..87a9466c5
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+++ b/1997/CH3/EX3.2/example2.sce
@@ -0,0 +1,18 @@
+//Chapter-3, Problem 3.2 , Page105

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

+clc;

+clear;

+

+//INPUT DATA

+PRF= 1000;//pulse repetitive frequency in Hz

+Fd = 1000;//doppler frequency in Hz;

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

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

+

+//Calculations

+ lamda = Vo/F;

+ Va    = (Fd*lamda)/2;//speed of automobile in m/s

+ Va1   = Va*18/5; //speed of automobile in kmph

+

+//Output

+mprintf('Speed of automobile is %g m/s or %g kmph\n',Va,Va1 );

diff --git a/1997/CH3/EX3.3/example3.sce b/1997/CH3/EX3.3/example3.sce
new file mode 100755
index 000000000..b2eaed543
--- /dev/null
+++ b/1997/CH3/EX3.3/example3.sce
@@ -0,0 +1,22 @@
+//Chapter-3, Problem 3.3 , Page105

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

+clc;

+clear;

+

+//INPUT DATA

+PRF= 1000;//pulse repetitive frequency in Hz

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

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

+

+//Calculations

+ lamda = Vo/F;

+ // Blind Frequency is given by Fn = n*PRF;

+ n1 = 1;

+ n2 = 2;

+ n3 = 3;

+ F1 =n1*PRF;//blind frequency for n=1 in Hz; 

+ F2 =n2*PRF;//blind frequency for n=2 in Hz; 

+ F3 =n3*PRF;//blind frequency for n=3 in Hz; 

+

+//Output

+mprintf('Lowest three Blind Frequencies are %g KHz ,%g KHz and %g KHz\n',F1/1000,F2/1000,F3/1000 );

diff --git a/1997/CH3/EX3.4/example4.sce b/1997/CH3/EX3.4/example4.sce
new file mode 100755
index 000000000..07ce46ab8
--- /dev/null
+++ b/1997/CH3/EX3.4/example4.sce
@@ -0,0 +1,25 @@
+//Chapter-3, Problem 3.4 , Page105

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

+clc;

+clear;

+

+//INPUT DATA

+F  = 10*10^9;    //operating frequency in Hz

+PRF= 800;       //pulse repetitive frequency in Hz

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

+n1 = 1;

+n2 = 2;

+n3 = 3;

+//Calculations

+

+lamda = Vo/F;//Wavelength in m

+

+// blind speed Vb = n*(lamda/2)*PRF in m/s

+

+Vb1 = n1*(lamda/2)*PRF;//first blind speed in m/s;

+Vb2 = n2*(lamda/2)*PRF;//second blind speed in m/s;

+Vb3 = n3*(lamda/2)*PRF;//third blind speed in m/s;

+

+//Output

+mprintf('First Blind Speed is %g m/s\n Second Blind Speed is %g m/s\n Third Blind Speed is %g m/s\n',Vb1,Vb2,Vb3);

+mprintf('NOTE: IN TEXT BOOK THIRD BLIND SPEED IS WRONGLY PRINTED AS 48 m/s');

diff --git a/1997/CH3/EX3.5/example5.sce b/1997/CH3/EX3.5/example5.sce
new file mode 100755
index 000000000..dce5fa257
--- /dev/null
+++ b/1997/CH3/EX3.5/example5.sce
@@ -0,0 +1,20 @@
+//Chapter-3, Problem 3.5 , Page106

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

+clc;

+clear;

+

+//INPUT DATA

+F  = 10*10^9;    //operating frequency in Hz

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

+Vb1 = 20;//lowest(first) blind speed in m/s

+n   =1 ;//since first blindspeed

+//Calculations

+

+lamda = Vo/F;//Wavelength in m

+

+// blind speed Vb = n*(lamda/2)*PRF in m/s

+

+PRF = (2*Vb1)/(n*lamda);//pulse repetitive frequency in Hz

+

+//Output

+mprintf('Pulse Repetitive Frequency is %3.2f KHz',PRF/1000);

diff --git a/1997/CH3/EX3.6/example6.sce b/1997/CH3/EX3.6/example6.sce
new file mode 100755
index 000000000..cc9bf6e76
--- /dev/null
+++ b/1997/CH3/EX3.6/example6.sce
@@ -0,0 +1,15 @@
+//Chapter-3, Problem 3.6 , Page106

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

+clc;

+clear;

+

+//INPUT DATA

+lamda = 3*10^-2;//wavelength in m

+PRF   = 1000;  //pulse repetitive frequency in Hz

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

+

+//Calculations

+

+Ruamb = (Vo)/(2*PRF);//max unambiguous range in m

+//Output

+mprintf('Maximum unambiguous range is %g Kms',Ruamb/1000);

diff --git a/1997/CH3/EX3.7/example7.sce b/1997/CH3/EX3.7/example7.sce
new file mode 100755
index 000000000..2d9939ed9
--- /dev/null
+++ b/1997/CH3/EX3.7/example7.sce
@@ -0,0 +1,25 @@
+//Chapter-3, Problem 3.7 , Page106

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

+clc;

+clear;

+

+//INPUT DATA

+

+n1   = 1 ;//since first blindspeed

+n3   = 3 ;//since third blindspeed

+

+//Calculations

+

+

+// blind speed Vb1 = n1*(lamda_1/2)*PRF1 in m/s

+// blind speed Vb3 = n3*(lamda-2/2)*PRF2 in m/s

+//here PRF1 = PRF2 = PRF

+//if Vb1=Vb3 then

+//1*(lamda_1/2)*PRF  =  3*(lamda_2/2)*PRF

+//lamda_1/lamda_2    = 3/1;

+//lamda = C/F;

+//therefore F1/F2 = 1/3 ;

+

+

+//Output

+mprintf('Ratio of Operating Frequencies of two Radars are (F1/F2) = 1/3');

diff --git a/1997/CH3/EX3.8/example8.sce b/1997/CH3/EX3.8/example8.sce
new file mode 100755
index 000000000..7b38e36b5
--- /dev/null
+++ b/1997/CH3/EX3.8/example8.sce
@@ -0,0 +1,21 @@
+//Chapter-3, Problem 3.8 , Page107

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

+clc;

+clear;

+

+//INPUT DATA

+

+Vb1 = 20;//first blind speed in m/s

+Vb2 = 30;//second blind speed in m/s

+n1   =1 ;//since first blindspeed

+n1   =2 ;//since second blindspeed

+lamda = 3*10^-2;//wavelength in m;

+//Calculations

+

+PRF1 = (2*Vb2)/(n1*lamda);//pulse repetitive frequency in Hz of  First Radar;

+

+PRF2 = (2*Vb2)/(n1*lamda);//pulse repetitive frequency in Hz of Second Radar;

+

+

+//Output

+mprintf('Ratio of pulse repetitive frequencies of the Radars is PRF1/PRF2 = %g',PRF1/PRF2);

diff --git a/1997/CH3/EX3.9/example9.sce b/1997/CH3/EX3.9/example9.sce
new file mode 100755
index 000000000..5cb26adb4
--- /dev/null
+++ b/1997/CH3/EX3.9/example9.sce
@@ -0,0 +1,25 @@
+//Chapter-3, Problem 3.9 , Page107

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

+clc;

+clear;

+

+//INPUT DATA

+F  = 6*10^9;    //operating frequency in Hz

+PRF= 1000;       //pulse repetitive frequency in Hz

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

+n2 = 2;        // n value for second blind speed

+n3 = 3;       // n value for third blind speed

+//Calculations

+

+lamda = Vo/F//Wavelength in m

+

+// blind speed Vb = n*(lamda/2)*PRF in m/s

+

+Vb2 = n2*(lamda/2)*PRF  //second blind speed in m/s;

+Vb21 = Vb2*18/5 ;       //second blind speed in kmph; 

+Vb3 = n3*(lamda/2)*PRF //third blind speed in m/s;

+Vb31 = Vb3*18/5;       //third blind speed in kmph;

+

+//Output

+mprintf('Second Blind Speed is %g kmph\n Third Blind Speed is %g kmph\n',Vb21,Vb31);

+