The noise performance of the generated phase-coded signals
is also evaluated. To do so, an additive white Gaussian noise
(AWGN) is added to the generated binary phase-coded signal,
as shown in Fig 10(a), where the signal-to-noise ratio (SNR)
is 0 dB. Fig. 10(c) shows the correlation between the original
phase-coded signal (as a reference) and the phase-coded signal
with an AWGN. The autocorrelation peak has an FWHM of
about 0.995 ns, as shown in the inset of Fig. 10(c), leading to a
compression ratio of about 129. The PSR in Fig. 10(c) is about
9.38, which is still greater than those reported in [8]–[10].