for the discontinuity culminating in activation of the signal labeled u201c discontinuous boundary 250 u201d both of these techniques have in common that discontinuous boundary 250 will only be activated when there truly is a discontinuity other similar variations of these will be readily apparent to one skilled in the art these techniques are useful when further optimization via maximized use of a discontinuity sensitive filter will yield substantial benefits in the exemplary embodiment discontinuous boundary 250 may be activated during some half frame boundaries which do not include a phase discontinuity but the fraction of overall time that this adds to the use of a non optimal discontinuity insensitive filter is not significant pilot filter 240 acts on raw pilot signal 280 in conjunction with discontinuous boundary 250 to produce filtered pilot signal 230 filtered pilot signal 230 is connected as an input to coherent demodulator 220 it is used to coherently demodulate the baseband signal provided by analog receiver chain 210 in a coherent demodulation system distortion in the pilot signal can lead to deleterious demodulation effects the details of pilot filter 240 and its configuration in the present invention to combat those deleterious effects are described below note that as stated above microprocessor 260 may be in control of other functions of the receiver including demodulation although no connections are shown in this embodiment it is implicit that if alternate phase discontinuity signaling techniques are employed the information needed to create signal discontinuous boundary 250 can be relayed to microprocessor 260 or any equivalent special circuitry used instead fig3 provides more details of pilot filter 240 raw pilot signal 280 enters pilot filter 240 and connects to the.