A new signal format that allows sharing of spectrum with CDMA signals with
a minimum amount of mutual interference and a maximum amount of processing
gain. The method including the step of coherently frequency hopping a
narrow band signal adapted to minimize interference with a main lobe of
the CDMA code over the allocated bandwidth. A particular application of
this provides a method for enabling a global positioning device adapted to
receive an allocated bandwidth to directly acquire a to P(Y) code when an
associated C/A signal is effectively jammed.