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Details van artikel 133 van 169 gevonden artikelen
| Titel: |
Optimal estimation of ship's attitudes for beampattern corrections in a coaxial circular array |
| Auteur: |
Chakraborty, Bishwajit Dey, Kamal K. |
| Verschenen in: |
Marine geodesy |
| Paginering: | Jaargang 17 (1994) nr. 4 pagina's 223-236 |
| Jaar: |
1994-10 |
| Inhoud: |
A study is conducted to estimate the accurate attitude of a ship's motion and the estimation is used to arrive at the corrections required for a farfield pattern of a coaxial circular array. The relevant analytical expression is developed for the computation of moving average filter weights to estimate the ship's attitude for beamsteerings at different sea conditions. Farfield patterns are presented for different steered directions for the coaxial circular array of the additive type, and the multiplicative array technique is also used for beamsteering for higher steering angles to observe its control on the sidelobes as well as for the main beamwidths. In order to introduce an adaptive filter to estimate the accurate attitude for stable sonar platform, an adaptive parameter is examined for bathymetric applications where nonstationary ship movement prevails. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 133 van 169 gevonden artikelen
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