From df60071cf1d1c18822d34f943ab8f412a8946b69 Mon Sep 17 00:00:00 2001 From: hardythe1 Date: Wed, 3 Jun 2015 15:27:17 +0530 Subject: add books --- sample_notebooks/Raj Kumar/Chapter14.ipynb | 257 +++++++++++++++++++++++++++++ 1 file changed, 257 insertions(+) create mode 100755 sample_notebooks/Raj Kumar/Chapter14.ipynb (limited to 'sample_notebooks/Raj Kumar/Chapter14.ipynb') diff --git a/sample_notebooks/Raj Kumar/Chapter14.ipynb b/sample_notebooks/Raj Kumar/Chapter14.ipynb new file mode 100755 index 00000000..3837e900 --- /dev/null +++ b/sample_notebooks/Raj Kumar/Chapter14.ipynb @@ -0,0 +1,257 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:887dc8fe96ce5749275f69e533e7f68525ad7b355888b111befa3adaae8219e6" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter14 - Ground wave propagation" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex-14.10.2, pg-356" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "ht=100 #feet\n", + "hr=50 #feet\n", + "d=1.4142*((ht)**1.0/2+(hr)**1.0/2) #miles\n", + "print \"Radio horizon is \", round(d,2),\" miles\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Radio horizon is 106.06 miles\n" + ] + } + ], + "prompt_number": 11 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex-14.6.2, pg-359" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "f=150 #MHz\n", + "c=3*10**8 #m/s\n", + "GT=1.64 #dB\n", + "PT=20 #W\n", + "d=50 #km\n", + "l=c/(f*10**6) #m\n", + "E=(30*GT*PT)**1.0/2/(d*1000) #V/m\n", + "le=l/math.pi #m\n", + "Voc=E*le #V/m\n", + "Voc*=10**6 #uV\n", + "print \"Open circuit voltage is \",round(Voc,2),\" uV\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Open circuit voltage is 6264.34 uV\n" + ] + } + ], + "prompt_number": 13 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex-14.10.6, pg-364" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "P=35 #W\n", + "ht=45 #m\n", + "hr=25 #m\n", + "f=90 #MHz\n", + "c=3*10**8 #m/s\n", + "d=4.12*((ht)**1.0/2+(hr)**1.0/2) #km\n", + "print \"Distance of line of sight communication is \", round(d,2),\" km\"\n", + "l=c/(f*10**6) #m\n", + "ER=88*(P)**1.0/2*ht*hr/(l*(d*1000)**2) #V/m\n", + "ER*=10**6 #uV/m\n", + "print \"Field strength is \",round(ER,2),\" uV/m\" \n", + "#Answer is wrong in the textbook." + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Distance of line of sight communication is 144.2 km\n", + "Field strength is 27.77 uV/m\n" + ] + } + ], + "prompt_number": 14 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex-14.10.5, pg-368" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "ht=100 #m\n", + "d=4.12*(ht)**1.0/2 #km\n", + "print \"Horizon distance is \",round(d,2),\" km\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Horizon distance is 206.0 km\n" + ] + } + ], + "prompt_number": 15 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex-14.6.1(i), pg-372" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "d=36000.0 #km\n", + "f=4000.0 #MHz\n", + "GT=20.0 #dB\n", + "GR=40.0 #dB\n", + "PT=200.0 #W\n", + "PT_dB=10*math.log10(PT) #dB\n", + "Ls=32.44+20*math.log10(f)+20*math.log10(d) #dB\n", + "PR_dB=PT_dB+GT+GR-Ls #dB\n", + "PR=10**(PR_dB/10) #W\n", + "PR*=10**12 # pW\n", + "print \"Received power is \",round(PR,2),\" pW\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Received power is 5.5 pW\n" + ] + } + ], + "prompt_number": 21 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex-14.10.1, pg-375\n" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "ht=100.0 #m\n", + "hr=100 #m\n", + "d=3.57*(ht**1.0/2+hr**1.0/2) #km\n", + "print \"Range of space wave propagation is \",round(d,2),\" km\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Range of space wave propagation is 357.0 km\n" + ] + } + ], + "prompt_number": 22 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Ex-14.10.4, pg-379" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "ht=100 #m\n", + "d=80 #km\n", + "hr=(d/4.12-ht**1.0/2)**2 #m\n", + "print \"Required height of receiving antenna is \",round(hr,2),\" meter\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Required height of receiving antenna is 935.29 meter\n" + ] + } + ], + "prompt_number": 23 + } + ], + "metadata": {} + } + ] +} \ No newline at end of file -- cgit