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diff --git a/Antenna_and_Wave_Propagation_by_S_Wali/15-Ionospheric_Propagation.ipynb b/Antenna_and_Wave_Propagation_by_S_Wali/15-Ionospheric_Propagation.ipynb new file mode 100644 index 0000000..484af74 --- /dev/null +++ b/Antenna_and_Wave_Propagation_by_S_Wali/15-Ionospheric_Propagation.ipynb @@ -0,0 +1,208 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 15: Ionospheric Propagation" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 15.12_1: Calculate_MUF.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example No. 15.12.1\n", +"clc;\n", +"clear;\n", +"close;\n", +"format('v',7);\n", +"\n", +"d=2000;//km\n", +"H=200;//km\n", +"fc=6;//MHz\n", +"f_MUF=fc*sqrt(1+(d/2/H)^2);//MHz\n", +"disp(f_MUF,'MUF in MHz : ');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 15.13_1: Calculate_the_range.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example No. 15.13.1\n", +"clc;\n", +"clear;\n", +"close;\n", +"format('v',8);\n", +"\n", +"Eta=0.9;//refractive index\n", +"f_MUF=10;//MHz\n", +"H=400;//km\n", +"Nm=(1-Eta^2)*(f_MUF*10^6)^2/81;//per m^3\n", +"fc=9*sqrt(Nm);//Hz\n", +"Dskip=2*H*sqrt((f_MUF*10^6/fc)^2-1);//km\n", +"disp(Dskip,'Skip distance or range in km : ');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 15.8_1: Maximum_electron_density.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example No. 15.8.1\n", +"clc;\n", +"clear;\n", +"close;\n", +"format('v',11);\n", +"fc_E=2.5;//MHz(critical frequency of E-layer)\n", +"fc_F=8.4;//MHz(critical frequency of F-layer)\n", +"disp('For E-layer : ');\n", +"Nm=(fc_E*10^6)^2/81;//per m^3(Maximum electron density)\n", +"disp(Nm,'Maximum electron density in per m^3 : ');\n", +"disp('For F-layer : ');\n", +"Nm=(fc_F*10^6)^2/81;//per m^3(Maximum electron density)\n", +"disp(Nm,'Maximum electron density in per m^3 : ');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 15.8_2: Critical_Frequency.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example No. 15.8.2\n", +"clc;\n", +"clear;\n", +"close;\n", +"format('v',6);\n", +"Nm_D=400;//electron/cm^3(Maximum electron density)\n", +"Nm_E=5*10^5;//electron/cm^3(Maximum electron density)\n", +"Nm_F=2*10^6;//electron/cm^3(Maximum electron density)\n", +"fc_D=9*sqrt(Nm_D);//kHz(critical frequency of D-layer)\n", +"disp(fc_D,'Critical frequency for D-layer in kHz : ');\n", +"fc_E=9*sqrt(Nm_E);//kHz(critical frequency of E-layer)\n", +"disp(fc_E/1000,'Critical frequency for E-layer in MHz : ');\n", +"fc_F=9*sqrt(Nm_F);//kHz(critical frequency of F-layer)\n", +"disp(fc_F/1000,'Critical frequency for F-layer in MHz : ');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 15.8_3: Calculate_frequency.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example No. 15.8.3\n", +"clc;\n", +"clear;\n", +"close;\n", +"format('v',7);\n", +"Eta=0.5;//(refractive index)\n", +"N=400;//electron/cm^3(Electron density)\n", +"f=sqrt(81*N/(1-Eta^2));//kHz(frequency)\n", +"disp(f,'Frequency in kHz : ');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 15.9_1: Find_the_virtual_height.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//Example No. 15.9.1\n", +"clc;\n", +"clear;\n", +"close;\n", +"format('v',7);\n", +"T=5;//milli-seconds(time period)\n", +"c=3*10^8;//m/s///speed of light\n", +"H=1/2*c*T*10^-3;//m(Virtual height)\n", +"disp(H/1000,'Virtual height in km : ');" + ] + } +], +"metadata": { + "kernelspec": { + "display_name": "Scilab", + "language": "scilab", + "name": "scilab" + }, + "language_info": { + "file_extension": ".sce", + "help_links": [ + { + "text": "MetaKernel Magics", + "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md" + } + ], + "mimetype": "text/x-octave", + "name": "scilab", + "version": "0.7.1" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} |