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diff --git a/1997/CH2/EX2.1/example1.sce b/1997/CH2/EX2.1/example1.sce
new file mode 100755
index 000000000..e3d40089d
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+++ b/1997/CH2/EX2.1/example1.sce
@@ -0,0 +1,13 @@
+//Chapter-2 example 2.1

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

+clc;

+clear;

+Tdelay=200*10^-6;       //time delay in sec

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

+//Calculations

+R=(Vo*Tdelay)/2;        //Range of the target in kms

+

+

+//Output

+mprintf('Range of the target is %3.1f Kms',R/1000);

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

diff --git a/1997/CH2/EX2.2/example2.sce b/1997/CH2/EX2.2/example2.sce
new file mode 100755
index 000000000..29e6da81b
--- /dev/null
+++ b/1997/CH2/EX2.2/example2.sce
@@ -0,0 +1,18 @@
+//Chapter-2 example 2.2

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

+clc;

+clear;

+Pt=5000;    //Peak tx power in watts

+Pav=1000;   //Average Power

+PRF1 = 10;  //Pulse repetition frequency in khz

+PRF2 = 20;  //Pulse repetition frequency in khz

+//Calculations

+D=Pav/Pt;//Duty cycle

+PRI1=1/PRF1;    //Pulse repetitive interval in  msec

+PRI2=1/PRF2;    //Pulse repetitive interval in  msec

+PW1=D*PRI1;     //Pulse Width in msec

+PW2=D*PRI2;     //Pulse Width in msec

+PE1=Pt*PW1;     //Pulse Energy in joules

+PE2=Pt*PW2;     //Pulse Energy in joules

+//Output

+mprintf('Duty cycle is %3.2f \n pulse repetition interval 1 is %3.2f msec\n pulse repetition interval 2 is %3.2f msec\n Pulse Width1 is %3.2f usec\n Pulse Width2 is %3.2f usec\n Pulse Energy1 is %3.2f J \n Pulse Energy2 is %3.2f J',D,PRI1,PRI2,PW1*1000,PW2*1000,PE1/1000,PE2/1000);

diff --git a/1997/CH2/EX2.3/example3.sce b/1997/CH2/EX2.3/example3.sce
new file mode 100755
index 000000000..f83e59e14
--- /dev/null
+++ b/1997/CH2/EX2.3/example3.sce
@@ -0,0 +1,15 @@
+//Chapter-2 example 2.3

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

+clc;

+clear;

+UR=200;//unambiguous range in kms

+BW=1*10^6;//bandwidth in hz

+V0=3*10^8;//velocity in m/s

+//Calculations

+PRF=V0/(2*UR*10^3);//pulse repetition frequency in hz

+PRI=1/PRF;//pulse repetition interval in sec

+RR=V0/(2*BW);//Range Resolution in mts

+PW=(2*RR)/(V0);//pulse width

+//Calculations

+mprintf('pulse repetition frequency is %3.2f Hz\n pulse repetition interval is %3.2f msec\n Range Resolution is %3.2f m\n pulse width is %3.1fusec',PRF,PRI*1000,RR,PW*10^6);

+

diff --git a/1997/CH2/EX2.4/example4.sce b/1997/CH2/EX2.4/example4.sce
new file mode 100755
index 000000000..c9a466644
--- /dev/null
+++ b/1997/CH2/EX2.4/example4.sce
@@ -0,0 +1,12 @@
+//Chapter-2 example 2.4

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

+clc;

+clear;

+Pt=50000;//peal power in watts

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

+PW=0.8;//pulse width in usec

+//Calculations

+D=PW*PRF*10^-6;//duty cycle 

+Pav=Pt*D;//average power

+//output

+mprintf('Duty cycle is %g\n Average power is %g Watts',D,Pav);

diff --git a/1997/CH2/EX2.5/example5.sce b/1997/CH2/EX2.5/example5.sce
new file mode 100755
index 000000000..1c5a1e722
--- /dev/null
+++ b/1997/CH2/EX2.5/example5.sce
@@ -0,0 +1,14 @@
+//Chapter-2 example 2.5

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

+clc;

+clear;

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

+Pt=1*10^6;//peak power in watts

+PW=1.2*10^-6;//pulse width in sec

+PRI=1*10^-3;//pulse repetition interval in sec

+//Calculations

+PRF=1/PRI;//pulse repetition frequency in hz

+Pav=Pt*PW*PRF;//average power in watts

+D=Pav/Pt;//Duty cycle;

+Rmax=Vo/(2*PRF);//maximum range of the radar in m

+mprintf('pulse repetition frequency is %g KHz\n average power is %g KW\n Duty cycle = %e\n maximum range of the radar is %g Km',PRF/1000,Pav/1000,D,Rmax/1000 );

diff --git a/1997/CH2/EX2.6/example6.sce b/1997/CH2/EX2.6/example6.sce
new file mode 100755
index 000000000..89793b6ad
--- /dev/null
+++ b/1997/CH2/EX2.6/example6.sce
@@ -0,0 +1,12 @@
+//Chapter-2 example 2.6

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

+clc;

+clear;

+PW = 2*10^-6;       //pulse width in sec

+PRF=800;            //pulse repetition frequency in KHz

+V0=3*10^8;          //velocity in m/s

+//Calculations

+Ru=V0/(2*PRF);      //unambigious range in mts

+RR=(V0*PW)/2;       //Range resolution in m

+//output

+mprintf('unambigious range is %g Km\n Range resolution is %g m',Ru/1000,RR);

diff --git a/1997/CH2/EX2.7/example7.sce b/1997/CH2/EX2.7/example7.sce
new file mode 100755
index 000000000..11b2b9755
--- /dev/null
+++ b/1997/CH2/EX2.7/example7.sce
@@ -0,0 +1,10 @@
+//Chapter-2 example 2.7

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

+clc;

+clear;

+Rmax=500;//maximum range in kms

+V0=3*10^8;//velocity in m/s;

+//calculations

+PRF=(V0/(2*Rmax*10^3));//pulse repetitive frequency in Hz

+//output

+mprintf('pulse repetitive frequency is %g Hz',PRF);

diff --git a/1997/CH2/EX2.8/example8.sce b/1997/CH2/EX2.8/example8.sce
new file mode 100755
index 000000000..9c6afe9a1
--- /dev/null
+++ b/1997/CH2/EX2.8/example8.sce
@@ -0,0 +1,21 @@
+//Chapter-2 example 8

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

+clc;

+clear;

+//input data

+F          = 9;             //Noise figure in dB

+BW         = 3*10^6;        // Bandwidth

+To         = 290;           // Temperature in kelvin

+K          = 1.38*10^-23;   // Boltzman constant

+

+//Calculations

+

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

+Pmin       = (K*To*BW)*(F1-1);//minimum receivable power

+

+//Output

+mprintf('Minimum receivable power Pmin = %3.4f pW',Pmin*10^12);

+mprintf('\n Calculation error at Pmin in textbook');

+

+

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

diff --git a/1997/CH2/EX2.9/example9.sce b/1997/CH2/EX2.9/example9.sce
new file mode 100755
index 000000000..23279db50
--- /dev/null
+++ b/1997/CH2/EX2.9/example9.sce
@@ -0,0 +1,16 @@
+//Chapter-2 example 2.9

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

+clc;

+clear;

+Pt=500000;//peal power in watts

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

+MRP=0.1*10^-12;//minimum receivable power in pico watts

+Ac=5;//capture area of antenna in m^2;

+RCS=20;//radar cross sectional area in m^2;

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

+// calculations

+lamda =Vo/F

+Rmax=((Pt*Ac*Ac*RCS)/(4*%pi*lamda*lamda*MRP))^0.25

+

+//output

+mprintf('Maximum Radar Range is %3.1f kms',Rmax/1000);