AquaPix - Miniature Synthetic Aperture Sonar (Minsas)

Kraken’s AquaPix® MINSAS synthetic aperture sonar sensor is currently offered in the MINSAS 60, 120, 180, and 240 configurations and has been traditionally integrated to medium- and large-size AUVs and towfish. As part of a recent U.S. Navy FCT contract, Kraken will optimize the MINSAS 60 sensor making it better suited for small, man-portable AUVs while offering a significant increase in capability and performance for man-portable platforms.

Aquapix Minsas 60 Specifications

• Platform speed 2-5 kts
• Receiver array dimensions – L/W/H 53.0 / 3.0 / 7.0 cm
• Receive array weight – air / water 6.4 kg / 3.2 kg
• Transmit array weight – air / water 0.5 kg / 0.19 kg
• Electronics module dimensions 47 cm x 17 cm dia.
• Electronics module weight – air / water 12.4 kg / 1.4 kg (1000 m)
• Total system weight – air / water 26.2 kg / 8.18 kg
• Depth rating 1000, 3000, 6000 m
• System power, no SAS processing 58 W
• RTSAS processing power 75 W
• Total power with RTSAS 133 W
• Power supply 24 VDC / 48 VDC, 250 W peak power
• Along track SAS image resolution 2.5 cm unshaded, 3 cm shaded
• Across track SAS image resolution 1.5 cm (downsampled to 3 cm)
• SAS bathymetry resolution – Real Time 25 cm x 25 cm
• SAS bathymetry resolution – Post Proc. 6 cm x 6 cm
• SAS bathymetry vert. accuracy @ 100m 10 cm
• Source level 210 dB re 1µPa @ 1 m
• PRF 8 Hz
• Center frequency 337 kHz
• Pulse length 10 ms (configurable 1 ms -> 1-10 ms)
• Pulse bandwidth 40 kHz
• Pulse type Linear FM
• SAS robustness against yaw ±4° over 20 m track length
• SAS robustness against sway ±10 m
• Max crab angle 20°

Aquapix Minsas 120 Specifications

• Platform speed 2-6 kts
• Receiver array dimensions – L/W/H 109.0 / 3.0 / 7.0 cm
• Receive array weight – air / water 12.8 kg / 6.4 kg
• Transmit array weight – air / water 0.5 kg / 0.19 kg
• Electronics module dimensions 47 cm x 17 cm dia.
• Electronics module weight – air / water 12.4 kg / 1.4 kg (1000 m)
• Total system weight – air / water 39.0 kg / 14.58 kg
• Depth rating 1000, 3000, 6000 m
• System power, no SAS processing 70 W
• RTSAS processing power 75 W
• Total power with RTSAS 145 W
• Power supply 24 VDC / 48 VDC, 250 W peak power
• Along track SAS image resolution 2.5 cm unshaded, 3 cm shaded
• Across track SAS image resolution 1.5 cm (downsampled to 3 cm)
• SAS bathymetry resolution – Real Time 25 cm x 25 cm
• SAS bathymetry resolution – Post Proc. 6 cm x 6 cm
• SAS bathymetry vert. accuracy @ 100m 10 cm
• Source level 210 dB re 1µPa @ 1 m
• PRF 4 Hz
• Center frequency 337 kHz
• Pulse length 10 ms (configurable 1 ms -> 1-10 ms)
• Pulse bandwidth 40 kHz
• Pulse type Linear FM
• SAS robustness against yaw ±4° over 20 m track length
• SAS robustness against sway ±10 m
• Max crab angle 20°