資源簡介
GPS中偽隨機(jī)碼(CA碼)產(chǎn)生方法有三種,提供了一種產(chǎn)生方法,可供自相關(guān)和互相關(guān)使用。
代碼片段和文件信息
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%?this?program?generates?the?C/A?code?for?PRN?svnum
%
%?Method1?implemented:
%??????code?delay?method
%
%?Parameters?description:?
%???????ca_used?-?function?output
%???????svnum??-?CA?code?number
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function?[ca_used?initial_setting]?=?codegen1(svnum);
gs2=?[5;?6;?7;?8;?17;?18;?139;?140;?141;?251;?252;?254;?255;?256;?257;?258;?469;?470;?471;?472;?473;?474;?509;?512;?513;?514;?515;?516;?859;?860;?861;?862];
g2shift?=?gs2(svnum1);
?
%?G1?LFSR:?x^10+x^3+1
%?generate?G1?code
reg?=?-1*ones(11
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