Patent ID: 7057554

Claim:
A navigation system, comprising: a first navigation receiver having a first millisecond epoch timing signal, a first reference frequency signal, and first antenna; a second navigation receiver collocated with said first navigation receiver and having a second millisecond epoch timing signal, a second reference frequency signal, able to view an identical constellation of navigation satellites as said first navigation receiver, and able to ascertain codephase and frequency information about each of said constellation of navigation satellites before the first navigation receiver; a connection from the first navigation receiver to the second navigation receiver for providing at least one of said first millisecond epoch timing signal and said first reference frequency signal such that the relative differences between corresponding said first and second millisecond epoch and reference frequency signals can be ascertained; a bootstrap message from the second navigation receiver to the first navigation receiver for providing codephase and frequency information about each of said constellation of navigation satellites relative to said first millisecond epoch timing and reference frequency signals.