龍亭企業有限公司 -- 海洋測量硬體
top

 

The TOPAS parametric sub bottom profiler is based on low frequency sound generation due to non-linear interaction in the water column from two high intensity sound beams at higher frequencies. The resulting signal has a high relative bandwidth (~80%), narrow beam profile (close to the transmitted high frequency signals) and no side lobes. All these features results in very high spatial resolution in the sediment profiles. The narrow beam also results in lower received reverberation levels and thus higher penetration.
Real-time processing

  • Digital band pass filter

  • Time Varying Filter (TVF)

  • Wavelet filtering (optional)

  • Spiking deconvolution filter (chirp)

  • Matched filter (chirp)

  • Dereverberation

  • Time Variable Gain (TVG)

  • Automatic Volume Control (AVC)

  • Stacking (Trace mixing)

  • Swell filter

  • Manual/automatic gain

  • Attribute processing

  • Statistics
Additional off-line processing

  • Synthetic Aperture Sonar processing (SAS)

  • tf-processing (optional)

  • De-noising (optional)

  • Sediment classification (optional)
Kongsberg TOPAS 18 Specifications
Primary frequency....................................................................................................35-45 kHz
Secondary frequency................................................................................................1 - 10 kHz
Output power............................................................................................................. >12 kW
Beamwidth
-Primary ...................................................................................................................~3.5 deg
-Secondary ............................................................................................................. 3 - 5 deg
Source level (6 kHz) ............................................................................... >204 dB//mPa @ 1m
Range resolution ........................................................................................................ <0.1 m
Penetration capability................................................................................................... >60 m
(depending on depth, ambient noise and sediment)
Depth range ..........................................................................................................4 - 1,000 m
Beam steering sector – across ......................................................................................80 deg
Beam steering sector – along (optional) ...........................................................................8 deg

          

海測硬體-右邊選單(繁體)
　

　

 

　
 
Untitled-1