Theoretical problems of the wideband sonar time-spatial filtration

• Autorzy: Janowski T. , Kotłowski A. , Porosińska E.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the synthesis of the time-spatial matched filtration algorithm. First part specifies base for the algorithm-input data. Successively, the matched filtration for continuous junction is depicted. This leads to the canonical form of the time-spatial filter. Consecutively, the decomposition into series connection of the matched and spatial filtration is realized. The next step is the signals approximation by Fourier series due to equivalence between approximation and interpolation on uniformly distributed discrete sampIes. The equation of the spatial filtration - in frequency domain - results from this mathematical operations. Application of the Bluestein's method to solve this equation provides to the final algorithm version. Advantages of the developed algorithm are presented in conclusions.

Słowa kluczowe

EN

wideband sonar; hydroacoustics

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2003
• Tom: Vol. 6
• Strony: 221--228
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Janowski T.

• OBR Centrum Techniki Morskiej, Gdynia, Poland

autor

Kotłowski A.

• OBR Centrum Techniki Morskiej, Gdynia, Poland

autor

Porosińska E.

• OBR Centrum Techniki Morskiej, Gdynia, Poland

Bibliografia

• 1. Robert B.Mac Leod, Modeling of active reverberation by time delay estimation mac leo d robert [e-mail].
• 2. Bernard Gold and Charles M.Rader, Digital Processing of Signal 1969 (Russian translation).
• 3. Bluestein L.I, Several Fourier Transform Algorithm, IEEE 1968 vlO, Boston.
• 4. http//www.curtistech.co.uk/papers/beamform.pdf.
• 5. Y. Wang, y. Wang, y. Wang, Detection of hyperbolic FM signais by cross-FFT algorithm, Underwater Acoustic ECUA 2000, page 1085-1089.