Direct detection of a barker code carried on a p.s.k. signal
G.S. Hobson, M. Paloyannidis, R.C. Tozer · Radio and Electronic Engineer · 1980
The signal acquisition time at the input to a charge transfer device is often much shorter than the minimum dock period for useful operation of the device. A feasibility study has been carried out to use this property to down-convert and detect directly, in one operation, a signal pattern carried by phase-shift keying a signal whose frequency is much greater than the maximum clock frequency of the charge transfer device.