future technologies and developments in sonar systems for
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The ATLAS ELEKTRONIK Group/ 1The ATLAS ELEKTRONIK Group/ 1
… a sound decision
Future Technologies and DevelopmentsIn Sonar Systems For Conventional Submarines
Cmde A Jai Singh (Retd), ATLAS ELEKTRONIK India19 April 2016, FCCI - New Delhi
The ATLAS ELEKTRONIK Group/ 2The ATLAS ELEKTRONIK Group/ 2
To Set the Context
Challenges to Overcome
Environment• complex acoustic
conditions• biological noise• high shipping
densities
Operations• networked
operations• high endurance• less energy
consumption
Human Factor• reduced crew
strength• varying training
levels
The ATLAS ELEKTRONIK Group/ 3The ATLAS ELEKTRONIK Group/ 3
ISUS100 for Submarines
Superior System Performance for Complex Conditions
• Expanded Flank Array• Flank Array• Towed Array with Winch
and Shape Estimator
Large Acoustic ApertureLong-Range Sonar Sensors
• Mine Avoidance Mode• Forward Looking Mode• Safety Surfacing
Forward Looking Active Sonar (FLAS)
• Advanced Ranging Sonar (as an option to EFAS)
Passive Ranging Sonars
Medium Frequency Surveillance Sonar• Extended Conformal / Cylindrical Array• Vertical Beamforming
The ATLAS ELEKTRONIK Group/ 4The ATLAS ELEKTRONIK Group/ 4
Features of the Expanded Flank Array Sonar (EFAS)
• Extension of the frequency range up to 4.8 kHz
• Improved directivity index due to higher frequency
• Improved target separation performance due to higher frequency
• Suppression of own noise by use of damping and shielding materials
• Effective flow noise damping by a hydro dynamically optimised sonar dome
Multiple Additional Benefits
Expanded Flank Array Sonar
The ATLAS ELEKTRONIK Group/ 5The ATLAS ELEKTRONIK Group/ 5
Multiple Additional Benefits
EFAS Sea Trial Results- on 212A class submarine
Screenshot from MFCC
• EFAS in upper detection display
• CAS in lower detection display
• Superior detection performance
• Operationally applicable
The ATLAS ELEKTRONIK Group/ 6The ATLAS ELEKTRONIK Group/ 6
PRS(Passive Ranging Array)
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ela
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range processing
and filtering
range
ARS(EFAS)
range
f oc u
ss i
ng
be
am
f or m
er
range processing
and filtering
Multiple Additional Benefits
Passive Ranging Principles – PRS vs. ARS
The ATLAS ELEKTRONIK Group/ 7The ATLAS ELEKTRONIK Group/ 7
Future Functions
• Detect threats (helicopters / fixed wing aircraft)
• Generate target parameters (missile engagement)
Complete and full automatic passive aircraft detection:
• Narrow band processing for required frequencies
• Detection of targets with Multi-Hypotheses-Tracker
• Classification of aircraft / no aircraft
• Estimation of the target position
• Classification of aircraft type by fundamental frequency
Enter The Airspace With A Towed Array
Passive Aircraft Detection
The ATLAS ELEKTRONIK Group/ 8The ATLAS ELEKTRONIK Group/ 8
Discover the Undiscovered
Improving Passive Sonar Detection Performance
Adaptive Beamforming Algorithms
• Estimation of beamformerparameters in real time from the stave data of the array (‘adaptive’)
• Computationally demanding compared to Delay-Sum beamformer
Features ofadaptive
beamforming
High target separation capabilities
Capabilityto detect very weak
targets
Robust schemes available
Extended conformal & flank arrays
The ATLAS ELEKTRONIK Group/ 9The ATLAS ELEKTRONIK Group/ 9
Discover the Undiscovered
Comparison DSBF vs. ABF: Sea Data EFAS - DSBF BDT 1
The ATLAS ELEKTRONIK Group/ 10The ATLAS ELEKTRONIK Group/ 10
Minimum Effort – Maximum Output
Sonar Track Manager (SOTRAM)
SOTRAM
Multiple-Hypothesis
Tracker
Operational & Display Concept
Data Fusion
Component
• automatic track setup• Automatic surveillance of track
quality• Automatic closing of tracks
which have become unsafe
• „One Target, one Track“• Change of track history possible
• Less displays• Simplified operation
The ATLAS ELEKTRONIK Group/ 11The ATLAS ELEKTRONIK Group/ 11
Future Functions
• Evaluation of received target echoes withinbi- & multistatic anti submarine warfare scenarios
• Operation in cooperative & non cooperativeenvironments
• Displays range and bearing of contacts in PPI plot
Someone is switching on the light– be the first and open your eyes.
Bistatic Sonar
The ATLAS ELEKTRONIK Group/ 12The ATLAS ELEKTRONIK Group/ 12
Safety First!
Multipurpose Forward Looking Active Sonar Setup
Transmission Concept
• Application of single frequency / high bandwidth concept
• Centre frequency of 50 kHz represents optimum balance between
Detection ranges against small targets (mines)
Detection ranges against large targets (submarines)
• Forward looking performance
• Low probability of intercept
• Basis for MOAS and FLS functions
• Safety Surfacing
The ATLAS ELEKTRONIK Group/ 13The ATLAS ELEKTRONIK Group/ 13
Applicable for detection of
• floating mines
• moored mines
• obstacles
• small submarines
Additional Features
• Depth classification
• Automatic tracking
• Automatic alarm
• Automatic collision avoidance course proposals
• Horizontal detection sector: 120°
• Vertical detection sector: 60°
Safety First!
Mine & Obstacle Avoidance Sonar (MOAS)
The ATLAS ELEKTRONIK Group/ 14The ATLAS ELEKTRONIK Group/ 14
Features
• generates visual representation of sea bottom profile in forward direction
• applicable as a navigation and safe surfacing aid
• Horizontal detection sector: 120°
• Vertical detection sector: 60°
Safety First!
Forward Looking Sonar (FLS)
The ATLAS ELEKTRONIK Group/ 15The ATLAS ELEKTRONIK Group/ 15
• Improved sonar sensor performance for complex submarine missions
• Sea proven as well as innovative technology
• Minimum operator workload and maximum performance
• Optimum balance between computational power and energy consumption / low physical space occupancy
• Technology and service support can be provided to IN through our subsidiary ATLAS India
ISUS100 - A Considerable Step Forward in Evolution
The system solution for conventional submarines
The ATLAS ELEKTRONIK Group/ 16The ATLAS ELEKTRONIK Group/ 16
SOMEONE IS SWITCHING ON THE LIGHTBE THE FIRST AND OPEN YOU’RE EYES!
ISUS100A Considerable Step Forward in Evolution
The ATLAS ELEKTRONIK Group/ 17The ATLAS ELEKTRONIK Group/ 17
ATLAS ELEKTRONIK GmbHSebaldsbruecker Heerstrasse 23528309 Bremen | GermanyPhone: +49 421 457-02Telefax: +49 421 457-3699
www.atlas-elektronik.com
Contact
… a sound decision
ATLAS ELEKTRONIK GmbHSebaldsbruecker Heerstrasse 23528309 Bremen | GermanyPhone: +49 421 457-02Telefax: +49 421 457-3699
www.atlas-elektronik.com
Contact
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