Abstract
This paper proposes an approach to use Huffman sequence in second harmonic imaging as coded excitation to improve the transmitted energy. An appropriate matched filter is applied to the Huffman sequence for compression and separation of the second harmonic components. The results show that the Huffman sequence has better performance than Chirp excitation in both second harmonic and conventional imaging. Around 50% improvement in axial resolution and 50 times improvement in energy of received signal is reported for Huffman sequence compared with Chirp. The simulations carried out by K-Wave Matlab toolbox.
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