Golay Codes for Simultaneous Multi-Mode Operation in Phased Arrays
B.B. Lee, Eric S. Furgason · 1982
A multi-mode phased array system is discussed which would simultaneously transmit a set of special pseudo-random codes called Golay codes and then isolate the coded echoes, and their associated modes (e.g. scan directions), upon receg tion using matched correlation receivers. Golay codes are special paired pseudo-random codes which have been shown to provide improved single-mode correlation system operation in the presence of clutter and large interfering targets due to the cancellation of range sidelobes. An algorithm is presented for synthesizing pairs of complementary Golay codes which also have the special property of producing zero cross-correlation during simultaneous transmission. A method for creating a larger, eight member, set of low cross-correlation Golay codes consisting of pairs which have zero cross-correlation, is also described.