1Pa-58 符号化送受信における口径分割を用いた符号伸張方法の検討(ポスターセッション)

概要

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We proposed sub-aperture decoding technique to achieve a high SNR without sacrificing high spatial resolution due to a low F-number with an acceptable size of hardware. Equal-phase-difference division (Fresnel type division) showed better performance at a small number of sub-apertures compared to the equal-width division. When the transmission waveform was encoded by the 13-chip Barker code, received with an aperture with an f-number of 1, and decoded with a mismatched filter, the proposed technique, with the number of sub-apertures of 16, lowered the range sidelobe level from -25 dB to -45 dB. This approach will make a long code sequence usable and expand the possibility of coding design such as a coding for simultaneous multiple transmissions and receiving.
2010-12-06