gpscon.m

来自「GPS TOOLBOX包含以下内容： 1、GPS相关常量和转换因子； 2、角」· M 代码 · 共 50 行

%                             gpscon.m
%  Scope:   This MATLAB macro sets the most used GPS constants as global 
%           variables.
%  Usage:   gpscon
%  Description of global parameters:
%           f0        - output, fundamental frequency, in Mhz
%           fL1       - output, L1 frequency, in MHz  (154*f0)
%           fL2       - output, L2 frequency, in MHz  (120*f0)
%           lambdaL1  - output, L1 carrier wavelength, in meters
%           lambdaL2  - output, L2 carrier wavelength, in meters
%           fca_code  - output, coarse/acquisition code (bit rate in Hz)
%           fp_code   - output, precision code (bit rate in Hz)
%           fL1pL2    - output, L1 + L2 frequency, in Mhz  (274*f0)
%           fL1mL2    - output, L1 - L2 frequency, in Mhz  (34*f0)
%           lambdaL1pL2  - output, L1 + L2 wavelength, in meters
%           lambdaL1mL2  - output, L1 - L2 wavelength, in meters
%           secpmin   - output, number of seconds per minute
%           secph     - output, number of seconds per hour
%           secpday   - output, number of seconds per day
%           secpweek  - output, number of seconds per week
%           secphday  - output, number of seconds per half day
%           secphweek - output, number of seconds per half week
%  Last update:  04/06/00
%  Copyright (C) 1996-00 by LL Consulting. All Rights Reserved.

global   f0  fL1   fL2   lambdaL1   lambdaL2   fca_code   fp_code   
global   fL1pL2   fL1mL2   lambdaL1pL2   lambdaL1mL2
global   secpmin   secph   secpday   secpweek   secphday   secphweek

f0        =  10.23;
fL1       =  1575.42;
fL2       =  1227.6;
lambdaL1  =  0.19029367279836;        %   c_speed / L1 frequency
lambdaL2  =  0.24421021342457;        %   c_speed / L2 frequency 
fca_code  =  1.023e+6;
fp_code   =  10.23e+6;

% linear combinations (narrow lane and wide lane)
fL1pL2      =  2803.02;               
fL1mL2      =  347.82;
lambdaL1pL2 =  0.10695337814215;      %   c_speed / (L1 + L2) frequency
lambdaL1mL2 =  0.86191840032201;      %   c_speed / (L1 - L2) frequency

secpmin   =  60.;
secph     =  3600.;
secpday   =  86400.;
secpweek  =  604800.;
secphday  =  43200.;
secphweek =  302400.;