ITU-R p.1546 calculator: FindDNominals(d) - File Exchange

Code covered by the BSD License

Highlights from
ITU-R p.1546 calculator

ITUP1546(varargin) ITUP1546 M-file for ITUP1546.fig
D06(f,h1,h2) 17 An approximation to the 0.6 Fresnel clearance path length
Emax(d,t,path) 2 Maximum field-strength values
FindDNominals(d)
P1546FieldStr(d,f,t,heff,vara... P1546FieldStr ITU 1546-3 Field strength calculator
P1546FieldStrbeta(d,f,t,heff,... P1546FieldStr ITU 1546-3 Field strength calculator
Qi(x) 15 An approximation to the inverse complementary cumulative normal distribution
Step_12(f,tca) Step 12: If information on the terrain clearance angle at a
Step_13(d,f,t,eff,eff1) Step 13: Calculate the estimated field strength due to tropospheric
Step_14(h2,f,path,varargin) Step 14: Correct the field strength for receiving/mobile antenna height
Step_15(d,h1,ha,f,env) Step 15: If applicable, reduce the field strength by adding the
Step_16() Step 16: If the field strength at a receiving/mobile antenna adjacent to
Step_17(E,Efs,Ese,ds,dtotal) Step 17: If necessary, limit the resulting field strength to the maximum
Step_18(fs,f) Step 18: If required, convert field strength to equivalent basic transmission loss for the path using
V(Kv,h1)
d =FS_find_dnew(FS,f,heff,T,p... FS_FIND_D ITU 1546 Field strength calculator: Find d for known Fieldstrength
find_d(FS,f,heff,T,path,h2) Peverted code the code find the closest value d value that equates the
h1Calc(d,heff,ha,hb,path) 3 Determination of transmitting/base antenna height, h1
h2corr(h2,f,varargin)
searchclosest(x,v) The following code tidbit is by Dr. Murtaza Khan, modified to return
step6_10(figure,h1,dinf,dsup,... function E = step6_10(figure,h1,dinf,dsup,d,path,f,Emaxvalue,t)
step7_normal(figureStep6,h1,d...
step81(tabulatedValues,h1,din... Step 8: Obtain the field strength exceeded at 50% locations for a
step814_815(tabulatedValues,h... Step 8.1.4: Obtain the field strength exceeded at 50% locations
step82(tabulatedValues,h1,din... Step 8.2: For a transmitting/base antenna height h1 less than 10 m
P1546validation.m
Test_D06.m
Test_Emax.m
Test_FindDNominals.m
Test_P1546FieldStr.m
Test_Qi.m
Test_V.m
Test_h1Calc.m
Test_searchclosest.m
Test_step6_10.m
Test_step7_normal.m
Test_step81.m
Test_step814_815.m
Test_step82.m
View all files

from ITU-R p.1546 calculator by Jef Statham
This an implementation of the ITU-R p.1546 model. Mixed land a sea paths not implemented.

FindDNominals(d)

function [dinf, dsup] = FindDNominals(d)
distance = [  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13,...
    14, 15, 16, 17, 18, 19, 20, 25, 30, 35, 40, 45, 50,...
    55, 60, 65, 70, 75, 80, 85, 90, 95,100,110,120,130,...
    140,150,160,170,180,190,200,225,250,275,300,325,350,...
    375,400,425,450,475,500,525,550,575,600,625,650,675,...
    700,725,750,775,800,825,850,875,900,925,950,975,1000];
%if value is not found dsup = 'nothing';
[dinf, dsup] = searchclosest(distance,d);
end

Highlights from ITU-R p.1546 calculator

Highlights from
ITU-R p.1546 calculator