Patent ID: 6975683

Claim:
A coherent radio frequency (“RF”) digital data communication system for mitigating the loss of digital data among segments of a transmitted message following the trailing edge of a jamming (“J”) pulse that strikes a transmitted message, the system comprising the following elements, in combination, a transmitter (Tx 3 ) having multiple digital data processing elements including a forward error correcting (“FEC”) encoder (Tx 3 c ), an interleaver (“I”) (Tx 3 d ) and a differential decoder (“DE”) (Tx 3 e ), aligned with an outward path from one element to the next traveled by a message for preparing the message for processing by complementary processing elements at a receiver (Rx 4 ) to which the transmitted message is addressed, wherein the receiver (Rx 4 ) further comprising multiple, digital data processing elements that are complements to those of the transmitter (Tx 3 ) including a FEC decoder (Rx 4 f ), a de-interleaver (“DI”) (Rx 4 e ) and a differential data decoder (“DDE”) (Rx 4 d ) within a path for processing an incoming digital data message having lost a data segment to a J pulse during transmission, an AGC circuit having a burst clamp that operates to protect AGC components from saturating while the J pulse strikes the transmitted message to enable the receiver to recover coherence with an incoming message following the trailing edge of the J pulse, wherein, the DDE (Rx 4 d ) synchronizes with either incoming data bit pairs, or inverted data bit pairs, among remnant segments of the message following the trailing edge of an expired J pulse that struck the transmitted message and incoming inverted data bit pairs, allowing the DDE (Rx 4 d ) to sequentially process received remnant data segments of the message created by the J pulse thereby allowing the DI (Rx 4 e ) and the FEC decoder (Rx 4 f ) to sequentially process the received remnant data segments.