Influences Analysis of SAS Azimuth Resolution on the UUV Trajectory Disturbances

수중 무인정 궤적 교란에 따른 SAS 방위해상도 영향에 대한 분석

Kim, Boo-il

  • Received : 2015.11.03
  • Accepted : 2015.12.15
  • Published : 2016.01.31


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 $0.3{\lambda}$ and disturbance period is greater than $2L_{sa}$ 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.


Synthetic aperture sonar;Trajectory disturbance;Azimuth resolution;UUV


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Supported by : Pukyong National University