Multi-code system signal switching method

The embodiment of the invention relates to a multi-code system signal switching method, which is characterized by comprising the following steps: 1, electrifying and resetting; 2, generating a first signal length, a first synchronization length and a first level proportion; 3, generating a first status word; 4, generating a first digital signal; 5, generating a first digital signal length; 6, turning to step 12 if the first digital signal length is not equal to the first signal length, and turning to step 7 if so; 7, judging a first effective signal; 8, generating a first code command; 9, generating a first instruction; 10, generating a first post-switching code system; 11, performing parameter rewriting on the first current code system signal data set, and then turning to step 16; 12, generating a second signal length, a second synchronization length and a second level proportion; 13, judging a second effective signal; 14, generating a second post-switching code system; 15, carrying out second current code s