SAES will present in the MAST 2016 International Conference a new study on classification of vessels by multi-influence signature correlation analysis

The study is based on the analysis of the multi-influence signature generated by the vessels as a basis to classify them. The dataset for the study has been obtained with the Multi-Influence Range System, MIRS which allows to register and analyze simultaneously magnetic, electric, seismic, acoustic and pressure influences.

 

The study will be presented next Tuesday (21st of June) at 14.00 horas by Antonio Sánchez, the head of I+D+i of SAES (Sociedad Anónima de Electrónica Submarina) inside the session 3B: Undersea Platforms II – Advanced Submarine Subsystems.

 

Abstract of Article

 

In the defence field, the reduction of the vessel’s multi-influence signature, as a mean to reduce their detectability, configures nowadays as a vital importance element to accomplish their missions and even for their own survival.MIRS mide le ruido radiado por buques

 

During the last times, this interest has also moved towards the civilian vessels field, centred mainly in the reduction of the marine environment pollution due to the different energy radiations generated by vessels. In this context, the study centres on the use of the vessel’s multi-influence signature as a basis to perform firstly their detection and secondly their classification from the results of the analysis of correlation among their set of signatures. It is based on real signals from vessels obtained with the Multi-Influence Measurement System, MIRS.

 

The use of this technique permits to increase the capability of use of the MIRS system in fields as the Mine Warfare or the protection of harbour environments, acting either as an independent system or integrated with other sensors, such as the AIS system or surveillance cameras, which collaborate together in the classification process. At the same time this technique permits to configure databases of classified contact multi-influence signatures in an automated way.

 

The MIRS is the system used to measure the emissions of vessels.

 

The SAES Multi Influence Range System (MIRS) for surface vessels and submarines provides real influence measures (magnetic, electric, pressure, acoustic, and seismic) in a real and controlled scenario, to successfully counter related threats. MIRS is among the best systems in the world in its class and compared to fixed stations. A decisive advantage of the MIRS system is that, due to its portability, low weight, low power consumption and high performance, can obtain all signatures of the ship in different geographical locations.

 

MIRS is also a tool for testing and calibration of:

 

•      Systems developed to reduce those influences as degaussing systems, ASG, etc.

•       Systems developed for MCM as the mine sweeping systems.

 

 

MIRS has been primarily designed using Commercial Off The Self (COTS) components for maximum reliability at minimum cost.

SAES studies the variations of underwater ambient noise in the Mediterranean.

The findings show a significant increase in noise in the summer season and on the morning, coinciding with increased activity in the port environment.

 

MIRS_crucero-3

SAES has presented its latest study on noise pollution in the marine environment in the Spanish Congress of Acoustics «TecniAcústica 2015″ held in Valencia and organized by the Spanish Association of Acoustics (SAE). The study, entitled Caracterización y patrones de evolución del ruido medioambiental submarino en un entorno de aguas poco profundas en el Mar Mediterráneo” (“Characterization and patterns of evolution of the underwater environmental noise in shallow waters at the Mediterranean Sea»), has been realized from the measurement of underwater ambient noise for a year on the coast of Cartagena and which has been analyzed to search daily and seasonal patterns of variation of the noise.

 

The increasing human activity in the marine environment is entailing a continuous growth in its acoustic ambient noise levels, which affects to the marine fauna wellbeing. In order to try to mitigate these effects, the nations are developing normative, as the Marine Strategy Framework Directive (MSFD) promulgated by the European Union (EU), aimed to achieve the Good Environmental Status (GES) of the EU’s marine water by 2020. Additionally, several organizations are working to establish measurement methodologies and standards that allow to regulate the underwater noise emissions.

 

To assess the extent to which the BEA is being achieved, the european directive establishes a set of qualitative descriptors; the number 11 refers specifically to the introduction of energy in the marine environment and includes the underwater noise, for which in turn two indicators, corresponding to impulsive sounds and continuous low-frequency, have been defined to monitoring them.Cartel_TECNIACUSTICA_01

 

Based on the above, the study aims to: the analysis, based on a set of acoustic parameters selected, of the acoustic measurements of surface ships and ambient noise for characterization, in order to raise awareness on their use, domain of applicability and operation of the information provided, as well as the analysis of the evolution of ambient noise levels in a particularly noisy marine area in the vicinity of a commercial port and focused both on the impulsive noise and on the continuous low frequency noise, following the guidelines of the descriptor 11 of the Marine Strategy Framework Directive.

 

The analysis of the measures that have been obtained by the MIRS system manufactured by SAES and capable of recording and analyzing the underwater multi-influences: acoustic, electric, magnetic, seismic and pressure, leads the conclusion that the noise levels suffer significant changes according to season and time of day, being increased at the periods of increased port activity, and reaching high levels that could represent a risk for the marine fauna in the study area. These findings add to a series of studies, activities and national and international projects in which SAES participates, with the aim to further the development of standards to meet the preservation of the marine environment.

You can download the complete study on the link below:

 

Caracterización y patrones de evolución del ruido medioambiental submarino en un entorno de aguas poco profundas en el Mar Mediterráneo

 

SAES participates in two papers at the International Conference «Underwater Acoustic 2014» in Greece.

The articles, entitled «Measurement and modeling of fading in ultrasonic Underwater channels» and «SIRAMIS: preliminary analysis of Acoustic and seismic signatures ship» have been presented on 24 and 25 June respectively to an audience that brings together the leading experts involved in research in underwater acoustics.

SAES has been developing for over twenty-five years its expertise in underwater acoustics within the defense naval sector. Over the years, this skill has expanded also to civil applications.

As a leader company in the study, design and manufacturing of systems for Security and Defense based on Underwater Acoustic, SAES makes part of national and international consortiums, created to develop R&D&I projects.

The paper “SIRAMIS: preliminary analysis of Acoustic and seismic ship signatures” has been developed in the frame of the EDA coordinated SIRAMIS project.

The second paper presented at the Conference entitled: “Measurement and modeling of fading in ultrasonic Underwater channels” was written jointly with the University of Málaga.

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ASW solutions for the modern ASW framework. Full text Article.

The emergence of new military technologies has dramatically affected to the traditional Concept of Operation of the Anti Submarine Warfare Missions (ASW). Modern submarines have technological advances in enhanced propulsion, quieting techniques and coordinated weapons technologies. In turn, new geopolitical scenarios in the world constrain naval forces involved in the ASW missions to the littoral waters (brown waters).

The “way ahead” for ASW in the 21st Century is:

(a) to deploy the forces in a Secure Friendly Maneuver Area to enhance their security close to the coast

(b) to prioritize the use of smaller and faster combat ships (OPV, corvettes, FAC) able to share tactical and intelligence information exploiting the benefits of a Network Centric Warfare (NCW)

(c) to use unmanned vehicles (UAV or USV) to deploy sonobuoys and relay the acoustic information either to combat ships or ground stations (d) to have the ability to make quick and agile centralized decisions in order to drive all the deployed forces as if they were a single and powerful weapon.

The Remote Operation ASW System (ROASW) manufactured by SAES is the new ASW solution which solves and covers the new ASW framework.

To download the full text article click the link below.

SAES UDT 2014: ASW solutions for the modern ASW framework.

Underwater Acoustic Pollution: Sources and Biological Impact

Humans perceived underwater noise in a limited way, which has led him to make a abuse use of some systems that perturb the underwater environment such as dredging, drilling, oil and gas production , shipping, active sonar , oceanographic research, etc. All these actions produce underwater noise pollution.

Noise pollution, as well as magnetic and electrical pollution, affects the flora and fauna of the seas and oceans from the moment that hinder the development of habitual behavior of living beings.

In this scenario SAES is developing the project USMA ( Underwater Signature Monitoring and Analysis Centre), which aims to develop technologies, equipment and establish rules to acoustic, magnetic, electrical and seismic unconventional contamination, and ensure compliance with the European marine Strategy framework Directive. Due to its characteristics, USMA could be developed within the framework European Horizon 2020 (H2020) program.

The following article, where the main sources of acoustic noise and its characteristics are presented, belongs to the set of investigations that SAES has done in this field.

Underwater_Acoustic_Pollution_Sources_and_Biological_Impact_(SAES)

UNDERWATER MULTI-INFLUENCE MEASUREMENTS AS A MEAN TO CHARACTERIZE THE OVERALL VESSEL SIGNATURE AND PROTECT THE MARINE ENVIRONMENT

MIRSThe overall signature of a vessel comprises acoustic, magnetic, electric-field, pressure and seismic radiations. Over the past years international community’s efforts have mainly centred on reducing the acoustic influence with the dual aim of decreasing the vessel detectability and reducing the level of acoustic pollution generated in the marine environment. Nowadays it is becoming increasingly clear the necessity of acting not only on the acoustic radiation but against the overall set of the vessel’s radiations, both in the military and the civilian fields, based on aspects such as the stealthiness of the vessels, the security of harbour and critical infrastructures and the environmental protection. As a key element to achieve this goal, it is greatly important to have at our disposal highly modular and adaptable measurement systems covering the overall set of vessel’s radiations, with a high capacity of data transmission to base centres in order to have the capacity of taken measurements in all kind of marine environments.

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