Dolphin 6201 OAS Specification

The resolution and update speed of the Dolphin Obstacle Avoidance Sonar sets a new performance benchmark for Autonomous Vehicle Navigation. The rugged compact underwater unit can be easily integrated into the nose-cone of the A.U.V. and is rated to 3000m operational depth. The underwater package has a Burton 13 pin connector, which links to the PC104 processing package mounted inside the A.U.V.'s pressure housing. The PC104 software can simultaneously track up to 250 discrete sonar targets.

Each target is assigned an I.D. number and then monitored for range and bearing each data frame at the rate of one frame per second until it disappears from view.Targets that appear along the protected corridor zone infront of the vehicle are analysed for a potential collision hazard and appropriate avoidance messages are then output via an RS232 port if necessary. By connecting a P.C. on the surface to the Ethernet output, the raw image data from each frame may be viewed using a Windows program.

The PC104 processing package comprises of a microprocessor PCB with a compact flash disk drive for program and data storage. Plugged into the PC104 expansion bus is a Marine Electronics data capture card which digitises the output from the Dolphin Sonar and buffers the frame of data from every acoustic transmission. The onboard software analyses the raw sonar image annd extracts the pertinent target data from the image background as well as transferring the raw data over the Ethernet link if a network server is present. A secondary RS232 port provides logging facilities for most post mission analysis of the navigational decisions.

The PC104 system may be seperately packaged to suit the application or vehicle or even fitted directly into the underwater housing.

Dolphin 6201 OAS:

System Specifications

Operating Frequency:
Operating Range:
Range Resolution:
Angular Resolution:
Sample Rate:
Horizontal Beamwidth:

Vertical Beamwidth:

Echo Sounder:

Update Rate (90° Sector):




PC104 Processor


Dimensions:


Power Supply:
Temperature:

Sample Rate:
Data Buffer:
Interfaces:

Processor:

250kHz
200m
25mm
1.5°
2MHz
Receive: 1.5°(+/-3dB)
Transmit: 110°
Receive: 16°
Transmit: 12°/6° (selectable)
250kHz, 8° (+/-3dB), tilted
33° below horizontal
200m range, 3 frame/sec
(Imaging mode)
200m range, 1 frame/sec
(Tracking mode)




Width: 150mm
Depth: 130mm
Height: 70mm
5V DC, 20W
Operating: 0 to +40°C
Storage: -20 to +60°C
2MHz
128K bytes
4 x RS232 ports
RJ45 Ethernet
586 compatible at 133MHz

220mm dia. x 142mm
21.5kg in air
17.2kg in water
Stainless Steel 316
Polyurethane
24V DC at 3A max.
Operating: -5 to +40°C
Storage: -20 to +60°
3000m
Burton 55R1-2013-0004
30µsec to 1msec
variable
RS232 Selectable baud rate
Ethernet (RJ-45)

Copyright © 2010. Marine Electronics Ltd.