Properties of binary codes compressed to several subpulses

New binary codes that compress a pulse to a width of several subpulses are proposed. The proposed binary codes are surveyed by computers up to code length 60. It is found that the peak-sidelobe to peak-mainlobe ratio for the proposed binary codes is smaller than that of conventional binary codes. Furthermore, the bandwidth characteristic and the Doppler characteristic for the proposed binary codes are evaluated. As a result, we have confirmed that characteristics of the proposed binary codes are better than those of the conventional codes.