A method for the acquisition of synchronisation signals in a spread
spectrum communication system includes:Receiving a synchronisation
signal,Applying to said synchronisation signal a dwelling procedure,
including calculating a matched filter output, calculating the energy
value of said matched filter output, and accumulating said energy values
over a range equal to the slot length in a RAM,Repeating said dwelling
procedure,After each dwelling procedure searching the maximum energy
value and the corresponding RAM address,Comparing the address found with
the address corresponding to the maximum in the previous dwelling
procedure,If said address is the same, incrementing a counter that keeps
the number of consecutive occurrences of a maximum at the same
position,otherwise setting the counter to zero,When said counter reaches
a user defined threshold value, breaking off the dwelling procedure,
andPassing said RAM address to a receiver timing device.