Synchronization signal (Sync Mark) detection using multi-frequency sinusoidal (MFS) signal-based filtering

An apparatus for implementing synchronization signal (“Sync Mark”) detection using multi-frequency sinusoidal signal-based filtering, comprising:

• at least one processor;
• and
• a non-transitory computer readable medium communicatively coupled to the at least one processor, the non-transitory computer readable medium having stored thereon computer software comprising a set of instructions that, when executed by the at least one processor, causes the apparatus to:
• detect a location of a synchronization signal (“Sync Mark”) within a data signal, by using multiple frequency sinusoidal (“MFS”) signal-based filtering and a sliding window comprising successive search windows each having a bit length corresponding to a bit length of the Sync Mark to identify a portion of the data signal having a magnitude indicative of the Sync Mark, generating a first MFS coefficient of the Sync Mark and a second MFS coefficient of the Sync Mark, and producing the data signal filtered by the first MFS coefficient and the data signal filtered by the second MFS coefficient;
• and
• refine the location of the Sync Mark within the data signal, by performing a phase measurement on the identified portion of the data signal having the magnitude indicative of the Sync Mark to identify a sub-portion of the identified portion of the data signal, the identified sub-portion having a phase indicative of the Sync Mark, the phase measurement being performed based on the MFS signal-based filtering.