METHOD FOR REALTIME DIGITAL PROCESSING OF COMMUNICATIONS SIGNALS

摘要

In a communications or jamming system, accurate timing of the transmission of digitally processed signals is accomplished through the use of standard off-the-shelf components. In order to eliminate the need for high-cost, difficult to develop, specific digital hardware or real-time synchronous software not available from the standard off-the-shelf components, the output from the non-real time components is coupled to a real-time interface (70) that assures nanosecond timing accuracy regardless of timing errors introduced by the off-the-shelf components. In one embodiment, the signals to be transmitted are digitized and then packetized, with the data to be transmitted reconstructed using non-real time digital processing. In order to establish the exact time for transmission, the packet is given a time stamp (52) in the form of a header which indicates the exact time at which the packet is to be transmitted by the communications system, with the packet with header being transmitted to a storage buffer (60), the output of which is coupled to a real-time interface including a precise time output gate (62), the timing of which is controlled by a precision time reference having nano-second accuracy.