DELPH™-SONAR:
Digital Storage and Processing
for Side-Scan Sonar Data
by ELICS

Software Overview

The DELPH-SONAR system can be interfaced with a wide range of tow fish thus allowing the digital 
storage and the display of the information collected.
DELPH-SONAR, based on a PC architecture, uses a plug-in DSP (digital signal processor) board for 
acquisition and processing of the side-scan sonar images.
The electronic mapping of sonar data includes:
•	Mosaicing
•	Interactive screen interpretation
•	Editing and labeling of data
•	Map edition and printing
•	
Digital processing capabilities offer:
•	image enhancement and display on a high-resolution monitor
•	slant range correction
•	target memorization
•	two-dimension filtering

Features and Benefits

•	Complete analysis of side-scan data
•	PC based, menu driven
•	Real-time processing and display
•	Dedicated processing depending on applications:
•	pipeline inspection
•	site survey
•	object detection
•	Integrated acquisition and display

Processor and System Specifications

•	Devices supported: TMS320C31, PC/AT/486 (at least) host processor
•	Minimum 400-Mbytes hard disk
•	Graphic board, TIGA compatible
•	High-resolution display

Usage Limitations or Performance Considerations

System performance:
•	Sampling frequency: 1 kHz to 50 kHz per channel (0.02 ms)
•	Recording length: 10,000 samples per channel
•	Shooting rate: continuous
•	Processing and acquisition board: 2-channel acquisition 16-bit A/D
Interface description:
•	Sensor interface
•	Maximum input level: 5-V eff.
•	Minimum input level full scale: 1 mV eff.
•	Input impedance: 1 MOhm
•	Programmable fixed gain: 0 to 70 dB
•	Noise level at 3 microV: -110 dB
•	Crosstalk: -81 dB typical
•	Shot order interface: TTL (external or internal)
•	Navigation interface: RS-232 serial port

Availability

DELPH-SONAR is available now over six distributors around the world.
Product is delivered with a one-year warranty against defect in manufacturing.
 Installation, training, and maintenance agreement also available directly from ELICS.

Company Background and Contact Information

Specialized in digital signal processing, real-time processing and digital signal processors (DSP), 
ELICS has made available a complete offer that covers the whole life cycle of a project, from 
planning to hardware and software integration.
In addition to this service activity, ELICS develops and markets software products designed for 
acquisition and processing of seismic and side sonar data.
Contact:	Robert Girault
		ELICS
		112 rue Brancion
		75015 Paris
		France
		+33 14419 65 80
		Fax: +33 l 44 19 65 89