- Tytuł:
- Continuous wave sonar with hyperbolic frequency modulation keyed by pseudo-random sequence
- Autorzy:
-
Jedel, A.
Marszal, J.
Salamon, R. - Powiązania:
- https://bibliotekanauki.pl/articles/331999.pdf
- Data publikacji:
- 2016
- Wydawca:
- Polskie Towarzystwo Akustyczne
- Tematy:
-
CW FM
pseudorandom sequence
Doppler effect
matched filtering - Opis:
- A CW FM type sounding signal is used in the classical solution of silent sonar. While the signal provides a relatively simple implementation of digital signal processing, and ensures good detection conditions, unfortunately, in the presence of the Doppler effect, distance measurement results tend to be wrong. This is due to the fact that the received signal’s instantaneous frequency value is dependent both on the distance to the object, and its speed. Sounding signal, as patented by the authors, is a combination of Pseudo-Random Sequences (PRS), and elementary signals of Hyperbolic Frequency Modulation (HFM) type. The structure of this signal is aimed at minimizing measurement error. The article presents the idea of a sounding signal of HFM+PRS type, and the results of computer simulations.
- Źródło:
-
Hydroacoustics; 2016, 19; 185-196
1642-1817 - Pojawia się w:
- Hydroacoustics
- Dostawca treści:
- Biblioteka Nauki
Artykuł