Orthogonal Golay excitation for range side lobe elimination in dual-frequency harmonic imaging
Dual-frequency harmonic imaging benefits from improvement of SNR by Golay excitation. Conventional Golay decoding suffers from spectral crosstalk with 3f0 and DC interferences. For orthogonal Golay, the output of exchanged filtering can be subtracted from that of the original filtering to remove the crosstalk. Results demonstrate the reduction of range side lobe level in both hydrophone measurement and B-mode imaging.
golay excitation dual-frequency range side lobe level tissue harmonic imaging orthogonal pair