Delph v29 1 - DELPH Sonar

DELPH Sonar
General Presentation
V2.9
Spring 2012

2
Introduction

 DELPH Sonar is a complete Acquisition,
Processing and Interpretation tool
designed to perform easily accurate and
productive side-scan surveys.

 DELPH Sonar does:
 Ensure quality data management
 Improve the interpretation workflow
 Eliminate bottlenecks during the processing
and interpretation

 Using these components with a unique
global viewer concept and powerful
geographic tools, the necessary time to
complete a mission report is drastically
reduced.

http://delph.ixsea.com

3
DELPH Sonar Components

 DELPH Sonar includes all necessary
components to perform side-scan
surveys:
 Turnkey Solutions
Including DELPH Acquisition and a
choice of side-scan sonars
 DELPH Sonar Acquisition
Easy and High Quality Data Logger
 DELPH Sonar Interpretation
Data Processing and Geo-Interpretation
 DELPH Sonar Mosaic Module
Generate and display sonar mosaics
 DELPH Contact Analyser
Echo Analysis and Contact Management
 DELPH Sonar Real-Time
Real-Time Processing, Interpretation and
Mosaicking


4
Workflow


5
Architecture

 Acquisition of analog and digital Side-  Processing  Interpretation
Scan Sonars • Speed correction • Global viewer display
• System monitoring • Channel offset • On-Screen annotation & drawing
• Waterfall display • TVG and adaptive gains • Contact manager and analyzer
• Full raw data logging (XTF) • Slant Correction • Printing
 Mosaicking  Geographic Tools
• Real-Time & Offline mosaicking • 3D interpretation QC and display
• Native storage in geoTIFF format • Coverage map generation
• Mosaic export to GoogleEarth® at a • Contact map generation
desired resolution
• Shine-Through overlapping option • Geographic interpretation with other sensor data (seismic / Sub-Bottom
Profiler, bathymetry, magnetometer)
• Quick data exclusion (turns, range, etc.)

6
DELPH Sonar Acquisition


7
Features

 Compatible with all analog and most
digital side-scan sonars
 iXBlue ELICS (100/400, 400/1250)
 Edgetech® 272TD, 4200
 L3-Klein® 3000/5000
 C-MAX® CM2
 Dual Frequency native support
 Real-Time « waterfall » and signal-scope
display
 Automatic contrast enhancement
 Data Logging in XTF format
 Quality Control with Status Indicators

 Windows XP-Vista(1)-7(1)

(1) Analog acquisition runs on Windows XP


8
DELPH Sonar Interpretation


9
Features
 Full report preparation tool
 Line processing, edition and
interpretation
 Contact analysis and
classification
 Mosaic generation and display

 Based on industry standards
 XTF
 ShapeFile
 GeoTiff
 TXT
 Bitmap
 CSV
 Tiff
 KML

 Windows XP - Vista - 7


11
Display

Display Global viewer Dual frequency display Intuitive navigation tools Quality Control and Geo-Referencing

Processing DELPH Interpretation offers an innovative way of accessing and visualizing sonar data,
thus boosting the workflow from processing to interpretation and reporting.

Edition

Interpretation

Printing

Mosaicking


12
On-Screen display of arbitrary length lines

 DELPH Sonar Interpretation is Along track
scale
Display
 Global viewer
based on a fast proprietary
 Dual frequency display indexing and caching


Intuitive navigation tools
Display of auxiliary data mechanism that allows to
process and display large
datasets while preserving
Processing
computer resources.

Edition
 DELPH Sonar Interpretation can
display arbitrary length seismic /
Interpretation sub-bottom profiler lines.

Printing  DELPH Sonar provides direct
access to features of interest
Across track
Mosaicking and can display large scale scale
structures and seabed types.


13
Dual frequency display

Display
 Global viewer
display and process simultaneously
 Dual frequency display the low and high frequencies of


Display of auxiliary data simultaneous dual frequency side
scan sonars
 The low and high frequency
Processing
displays are automatically
synchronized
Edition  Different gain corrections can be
defined for each frequency
 Different exclusion areas can be
Interpretation
defined for each frequency

Printing
A two-layers mosaic can be
produced from both sonar Low High
Mosaicking frequencies Frequency Frequency
The high frequency gives you better resolution at
small ranges, while the low frequency gives you
better contrast at far ranges


14

 Intuitively
analyze the data using
Display
 Global viewer
mouse and keyboard keys:
 Dual frequency display • Zoom to the complete profile
 Intuitive navigation tools
 Display of auxiliary data or a particular area
• Zoom in and out to the data
Processing • Pan, scroll
• Adjust vertical and horizontal
Edition scales

Interpretation  The display is separated from
the processing
Printing
 Saving time on data access
Mosaicking drastically improves the QC and
interpretation steps


15
Quality Control and Georeferencing

Display
 Global viewer
display auxiliary data curves like
 Dual frequency display heading, speed, roll and pitch


Display of auxiliary data synchronized with the waterfall
view
Processing
 The sonar data is fully geo-
referenced:
Edition
 Cursor location is available in
a selected geodesy
Interpretation  The cursor location is
synchronized with the mosaic
and other kinds of sensor data
Printing

 The sensor altitude from the
Mosaicking
automatic bottom detection can
be monitored in real-time when
no altimeter is available


16
Processing

Display

Processing Gain control (AGC and TVG) Bottom tracking Slant range correction

Edition The sonar image needs to be processed before any edition and interpretation

Interpretation

Printing

Mosaicking


17
Gain control (AGC and TVG)

 Enhance and balance the level of the
Display sonar signal

Processing  Different
corrections can be applied to


Gain control (AGC, TVG)
Bottom track
each channel for each sonar frequency
 Slant range correction

 Correct from an offset level on each
Edition channel

Interpretation  Automatic Gain Control
 On Range (AGC)
Printing  On Beam Angle (BAC)

Mosaicking  Time Varying Gain (TVG)
 The Time Varying Gain control
parameters can be adjusted very
intuitively using an interactive gain
curve.

18
Bottom tracking

 The distance of the sonar to the bottom is a key
Display parameter for accurate georeferencing of pixels
 Sensor measurement and automatic bottom detection
can be fooled by particles in the water column or
Processing
 Gain control (AGC, TVG)
become imprecise in a noisy environment
 Bottom tracking
 The sonar altitude can be defined in different ways
 The altitude of the sonar given by an embedded
Edition sensor can be used directly by DELPH Sonar
Interpretation
Interpretation  The automatic bottom tracking computes a fish altitude
that can be compared with the data from the altimeter
 A manual tracking of the bottom return is still available
Printing

 DELPH Sonar Interpretation allows you to edit the
Mosaicking bottom with a simple and intuitive mouse tool
 In just a few clicks you get a perfect bottom definition
which will lead to a better mosaic and more accurate
positionning.

19
Slant range correction

 The data acquired from the
Display sonar are usually not corrected
from the sonar altitude
Processing  As a result the image is
 Gain control (AGC, TVG) slightly distorted and the geo-
 Bottom track referencing is inaccurate
Before
correction
 DELPH Sonar Interpretation
Edition allows you to make the slant
range correction in a single click
Interpretation  The resulting image is
corrected from the sonar
altitude, thus the mosaic is
Printing more accurate

Mosaicking

After
correction


20
Edition

Display

Processing Editing tools enable to prepare the data before mosaicking

Edition Across and AlongTrack Area Exclusion

Interpretation

Printing

Mosaicking


21
Across and along track area exclusion

End of Line
 Partsof the sonar data are
Display sometimes of poor quality
 Lack of precision near farthest
Processing ranges
 Blind area at nadir
Edition  Acquisition or navigation
Swell Ghosts
 Bottom edition problem
 Area exclusion
 …

Interpretation
 These data should be removed
from the final mosaic get a better
Printing coverage with overlapping
profiles
Mosaicking  DELPH Sonar Interpretation
enables you to define
exclusion areas with just a few
clicks Start of Line


22
Interpretation

Display

Processing

Edition Interpretation of the data is a key step in the report preparation

Interpretation Measurement tool Annotation and Drawing Tools Contact Management

Printing
Polygons
Polylines
Echo Image
Symbols

Mosaicking (Shape Files,
(geoTIFF,
MDB)
KML, XML
formats)

Geographic View Contact Analyser


23
Measurement tool

 DELPH Sonar Interpretation
Display displays speed corrected data

Processing  The On-Screen measurement
tool will display
Edition  Accross Track length
 Along Track length
Interpretation  Point-to-Point Distance
 Measurement tool
• Annotation and Drawing
Tools
• Echo extraction

Printing

Mosaicking


24
Annotation and drawing tools

 Annotate
the sonar profile directly from
Display DELPH Sonar Interpretation using:
 Segments, poly-lines and arrows
Processing  Polygons for contouring areas
 Rectangles, Ellipses and Pictures
Edition  Text with adjustable font and style

Interpretation  Speed up the reporting process
Chose different colors and line shapes

Tools for different objects
 Echo extraction
 Filling and transparency improves
contouring while keeping and eye on
Printing your data

Mosaicking  Exportthe created polygons in shape
and KML formats and import it in third
party GIS systems


25

Display

Processing

Edition

Interpretation
Tools
 Echo extraction

Printing

Mosaicking


27

Display

Processing

Edition

Interpretation
Tools
 Echo extraction

Printing

Mosaicking


28

Display

Processing

Edition

Interpretation
Tools
 Echo extraction

Printing

Mosaicking


29

Display

Processing

Edition

Interpretation
Tools
 Echo extraction

Printing

Mosaicking


30
Echo extraction

 Extract echoes from your image
Display with a double click

Processing  The extracted echoes are
automatically opened in DELPH
Edition Contact Analyser

Interpretation  The settings for echoes
• Annotation and Drawing extraction can be configured
Tools
 Echo extraction
very easily
 Resolution
Printing  Size
 Storage folder

Mosaicking


31
Printing

Display

Processing

Edition

Interpretation

Printing Any part of the image can be printed on any Windows compatible printer

Mosaicking


32
Printing

Display print on any Windows compatible
printer up to A0 paper size
Processing
 The print layout is completely
Edition configurable, including paper
size and orientation, title, logo,
…
Interpretation

A preview helps you to adjust
Printing
layout before printing

Mosaicking
 Print
using a PDF Driver to
complete your reporting


33
Mosaicking

Display

Processing

Edition

Interpretation After all features have been interpreted, the mosaic provides a full georeferenced image

Printing

Side-Scan Sonar
Mosaicking Mosaic Geographic View
geoTIFF


34
Mosaicking

 Sonar profiles can be mosaicked with
Display just a few clicks
 Each line can be mosaicked
Processing independantly or many lines can be
mosaicked simultaneously
Edition  The sonar mosaic is generated as
image tiles, optimizing disk space and
Interpretation data access for visualization
 The mosaic is produced using in the
Printing geoTIFF format, embedding spatial
projection and geographic position. It
seamlessly integrates any third party
Mosaicking
GIS solution.
 DELPH Mosaic display is optimized for
handling large datasets at any scale in
the best quality.


36
Mosaicking


37
DELPH Sonar Interpretation - Features

Display Global viewer Dual frequency display Intuitive navigation tools Quality Control and Geo-Referencing

Processing Gain control (AGC and TVG) Bottom tracking Slant range correction

Edition Across and AlongTrack Area Exclusion

Interpretation Measurement tool Annotation and Drawing Tools Echo extraction

Printing
Polygons
Side-Scan Sonar Polylines
Echo Image
Mosaic Symbols

Mosaicking geoTIFF (Shape Files,
(geoTIFF,
MDB)
KML, XML
formats)

RoadMap Geographic View Contact Analyser


38
Contact Management


39
Contact Management - Introduction

 DELPH Contact Analyser provides necessary tools to analyze and
Management classify sonar echoes
 2D/3D display of echo and echo information
Display  Sonar line, position, range, uncertainty ellipse, grid,…
 Simultaneous display of multiple echoes
Analysis  Measurement of echo characteristics
 Echo Width, Shadow Width, Echo Length, Echo Height

Classification  Intuitive classification of echoes and contacts
 Contact name and class

Export
 Snapshot export
 Export to ASCII files in HTML, CSV, ASCII, XML
 Export to geographic layers in ShapeFile and KML
 Contacts are generated from DELPH Sonar Interpretation profile
window and display in DELPH Contact Analyser and DELPH
RoadMap.
 DELPH Contact Manager displays a catalog of existing echoes and
provides a direct access to DELPH Contact Analyser.

40
Contact Management - Contact Manager

Management

Display

DELPH Contact Manager provides a convenient way to review target classification and
Analysis
access the analysis environment

Classification

Export


41
Contact Management – Contact Manager

Contact List Echo Summary

Echo Thumbnails


42
Contact Management - Display

Management

Display 3D display Display of echo and fish information Multiple windows

Analysis Displays echoes in 3D with their associated information. Multiple windows display allows
to compare several echoes before classifying them
Classification

Export


43

 3D display of echo
Display
 3D display
 Graphic view
 Display of echo and fish  Uncertainty ellipse
information
 Multiple windows display  Grid
 Target
Analysis  Display of echo and fish information
 Position
Classification  Resolution
 Range
 File
Export
 Heading
 Roll, pitch
 Altitude
 …


44

Management

Display
 3D display
 Display of echo and fish
information
 Multiple windows display

Analysis

Classification

Export


45
Contact Management - Measurement Tools

Management

Display

Measurement

Classification The characteristic dimensions of the echo can be obtained easily with the measurement
tools
Export


46
Contact Management - Measurement tools

 Use the measurement tools to
Management estimate the dimension of the
echo
Display  Echo width
 Shadow width
Analysis  Length
 Height

Classification

Export


47
Contact Management - Classification

Management

All the echoes are stored in a database. The classification toolbars enable to classify
Display echoes and contacts in a very simple way

Analysis

Classification

Export


48
Contact Management - Classification

 Use the classification toolbars to
Management classify your echo
 Contact name
Display  Class type

Analysis  Add as many contact and
classes to the database as you
Classification need

Export


49
Contact Management - Export

Management

Display

Analysis

Export in standard format the result of your work to incorporate in your report
Classification

Export Export of echo and fish information Snapshot export

Echo and Fish Echo Snapshot
information GIS Layer

(HTML, TXT, (geoTIFF, (BMP, TIF)
XML, CSV) SHP, KML)

GIS - Report Editor


50
Contact Management – Export – ASCII files

 Exportall your echo information
Management in one click to various formats

Display  The exported file can be directly
incorporated in your report

Analysis
 Thesurvey contact report can
be generated in one go
Classification

Export
 Export of fish and echo
information
 Snapshot export

XML CSV ASCII HTML


51
Contact Management – Export – Maps

 Sonarechoes are natively stored in
Management geoTIFF format

Display  Vectorlayers containing all contact
information can be created in
Analysis ShapeFile and KML format.

Classification

Export
information
 Snapshot export


52
Contact Management – Export – Snapshot

 The on screen image can be
Management exported (with or without legend) to
tiff or bitmap image
Display
 The resulting image can be directly
Analysis incorporated in your report

Classification

Export
information
 Snapshot export


53
Contact Management - ExportFeatures

Management

Display 3D display Display of echo and fish information Multiple windows

Analysis

Classification

Export Export of echo and fish information Snapshot export

Echo and Fish Echo and Fish Snapshot
information information
Format
(HTML, TXT, (HTML, TXT, BMP, TIF
XML, CSV) XML, CSV)

Report Editor


Delph v29 1 - DELPH Sonar

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