Influences Analysis of SAS Azimuth Resolution on the UUV Trajectory Disturbances

Title & Authors
Influences Analysis of SAS Azimuth Resolution on the UUV Trajectory Disturbances
Kim, Boo-il;

Abstract
Active synthetic aperture sonar on the small UUV is generated several trajectory disturbances under the influences of underwater environments, and causing a large error in the synthetic aperture processing. In this paper, we analyzed the effects of azimuth resolution for the phase mismatch of the synthetic aperture focus processing when the periodic or random trajectory disturbances was generated on the side direction. The simulation results show that ghost targets are generated and azimuth resolution is very deteriorated when disturbance amplitude is greater than $\small{0.3{\lambda}}$ and disturbance period is greater than $\small{2L_{sa}}$ in the periodic trajectory disturbances environments. And detection performance on the seabed small objects by the synthetic aperture processing is shown that there is a significant effects on the azimuth resolution depending on the types and conditions of the platform trajectory disturbance variations.
Keywords
Synthetic aperture sonar;Trajectory disturbance;Azimuth resolution;UUV;
Language
Korean
Cited by
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