AquaPix® MINSAS

MINSAS is an off the shelf configurable Interferometric Synthetic Aperture Sonar (SAS) which replaces high end sidescan systems at an affordable price, while delivering significantly higher resolution, range, and area coverage rates (ACR).

Aquapix Minsas 60

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

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°

AquaPix SAS swath width at 3 cm constant resolution vs. typical side scan sonar at 5 cm resolution. MINSAS swath width is 20X altitude.

 

Kraken’s Interferometric SAS Bathymetry coverage area compared to Multibeam coverage area.

 

Area Coverage Rate Matrix for MINSAS Variants

 

AquaPix MINSAS 120 image of a resolution target in the Baltic Sea from AUV platform.  Target consists of 40 cm (15.75 inch) arms with four, 5 cm (2 inch) spheres per arm and a single center sphere.   Sonar altitude is 9.9 meters.