| Popis: |
Linearly frequency-modulated harmonic (LFM, chirp) signals are widely used as active sonars probes replacing traditional simple tonal probes. This increases sonar range and resolution due to chirp signals wide frequency band, but still leaves unsolved the problem of probes mutual interference (cross-talk). Chaotic signals, known for their wide spectra and unique waveforms, could be an appropriate alternative. Analysis of these two types of signals shows that chaotic signals exhibit high resistance to crosstalk and are less affected with transmission loss in comparison with chirp signals. |
