Stmicroelectronics S.r.l.

Maristella Frazzetto

Giuseppe Avellone

Ettore Messina

A method and a system for the acquisition and tracking of BOC(m,n) modulated codes, m/n equal to an integer, in which a correlation function is calculated of the BOC(m,n) modulated code received from a remote transmitter with a code wlocally generated at a receiver terminal according to one from the following the relationships:(&#x3c4;)=(&#x3c4;)&#x2212;(&#x3c4;/2)&#x2212;(&#x3c4;/2)](&#x3c4;)=(&#x3c4;)&#x2212;(&#x3c4;/2)&#x2212;(&#x3c4;/2)](&#x3c4;)=(&#x3c4;)&#x2212;(&#x3c4;/4)+(&#x3c4;/4)](&#x3c4;)=(&#x3c4;)&#x2212;(&#x3c4;/4)+(&#x3c4;/4)](&#x3c4;)=[(&#x3c4;/4)+(&#x3c4;/4)](&#x3c4;)=[(&#x3c4;/2)&#x2212;(&#x3c4;/2)]

Method and system for resolving the acquisition ambiguity and the problem of false lock in tracking BOC(m,n) modulated signals, particularly for satellite positioning/navigation systems

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Catania, Italy

Maristella Frazzetto