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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range processing

and filtering

range

ARS(EFAS)

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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