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Patent
Elta Systems Ltd. | Date: 2016-07-12

A method utilizes signals received from the signal source by receivers during respective time intervals and data about a change in positions of the receivers during these time intervals. The method includes applying first processing to each of the signals received by each respective receiver to determine an accumulated phase in the signal during a respective time interval. Applying second processing to determine differential phases differences between the accumulated phases of the signals received by two or more pairs of the receivers. The phases differences are indicative of the difference between the changes of the distances of the respective receivers from the signal source during the respective time intervals. The method includes applying a third processing for determining the location of the signal source such that the relative changes between the positions of the respective receivers relative to the determined location correspond to the distance differences of the phase differences.


Patent
Elta Systems Ltd. | Date: 2017-02-08

A system and method for locating a signal source are disclosed. The method utilizes signals S_(n) received during respective time intervals {t_(n)} from the signal source by a number n of receivers {Rc_(n)}, and data about the change {R_(n)} of the receivers positions {R_(n)}. The method includes processing the signals S_(n) from each of the receivers to determine the phase _(n) accumulated in the signal S_(n) during a respective time interval t_(n). Based on the determined accumulated phases {_(n)}, the accumulated phases differences _(mn) (differential phase) between the signals, S_(m) and S_(n), that are received by two or more pairs {m,n} of the receivers are determined. Then, the location of the signal source is determined such that it satisfies that the changes in the positions of the respective {n,m} receivers relative to that location correspond to the differential phases _(nm) between the signals received by the respective receivers.


Grant
Agency: European Commission | Branch: H2020 | Program: IA | Phase: DS-06-2014 | Award Amount: 5.82M | Year: 2015

The advent of Social Networks has made both companies and public bodies tremendously exposed to the so-called Social Engineering 2.0, and thus prone to targeted cyber-attacks. Unfortunately, there is currently no solution available on the market that allows neither the comprehensive assessment of Social Vulnerabilities nor the management and reduction of the associated risk. DOGANA aims to fill this gap by developing a framework that delivers aDvanced sOcial enGineering And vulNerability Assessment. The underlying concept of DOGANA is that Social Vulnerabilities Assessments (SVAs), when regularly performed with the help of an efficient framework, help deploy effective mitigation strategies and lead to reducing the risk created by modern Social Engineering 2.0 attack techniques. Two relevant features of the proposed framework are: i) the presence of the awareness component within the framework as the cornerstone of the mitigation activities; ii) the legal compliance by design of the whole framework, that will be ensured by a partner and a work package explicitly devoted to this task. Moreover, the outcomes of the project are also expected to provide a solid basis to revise the insurance models for cyber-attacks related risks, thanks to the involvement of 2 strong DOGANA partners in this area of activity. The project will be implemented by a consortium of 18 partners, from 11 different countries, including users, technology providers of whom 3 are major world-wide cyber-security solutions market leaders as well as legal and psychological expertise. An extensive field trial plan enables the testing of the DOGANA platform with six users (4 partners and 2 supporting users) operating in the critical areas of energy, finance, transport, utilities, and public authorities. DOGANA has also created a unique consortium with a world-wide scope.


Patent
Elta Systems Ltd. | Date: 2016-11-16

A calibration network for an antenna array is disclosed, comprising a shielded signal transmission line having an electrically conducting wire coaxially passing along an electrically conductive shielding sleeve electrically insulated therefrom. The shielded signal transmission line is configured and operable to propagate signals along its length and comprises one or more electromagnetic coupling sites spaced-apart along its length and adapted for coupling the calibration network with a certain number of antenna elements of an antenna array. Each electromagnetic coupling site comprises at least one aperture formed in the electrically conductive shield of the signal transmission line for electromagnetic coupling between the signal transmission line and the radiating elements.


A moving cellular communication system comprising at least one upgraded moving relay including at least two base station functionalities and at least one mobile station functionality and a relay resource manager, all co-located, wherein each base station functionality from among the at least two base station functionalities of the upgraded moving relay is operative to communicate via antennae with at least one mobile station thereby to define a first radio link therebetween, and wherein each base station functionality has a connection to its co-located relay resource manager, wherein each mobile station functionality of the upgraded moving relay communicates via antennae with a unit which has base station functionality thereby to define at least one second radio link, respectively, wherein the relay resource manager in each individual moving relay comprises a radio resource manager; and functionality for exchanging information with relay resource managers is included in moving relays other than the individual moving relay.


A hierarchical cellular network administration system operative to administrate for a hierarchical cellular network having a core, the hierarchical cellular network administration system comprising a link establishment initiator operative to generate link establishment commands; and relay manager functionality operative to establish at least one link between at least one relay in the hierarchical cellular network and all nodes in said cellular network desired to be served by said at least one relay, as per said link establishment commands generated by the link establishment initiator; and to control operation of links thus established.


A hierarchical cellular network system having a core and comprising a plurality of nodes, wherein at least one node comprises a relay; and wherein at least one relay includes: a tunneling sub-system; a backhauling link subsystem interfacing between the tunneling subsystem and a node which is closer to the core than the relay; and a base station subsystem, interfacing between the tunneling subsystem and a mobile station or a node which is further from the core than the relay, wherein the tunneling subsystem is operative to perform the following, on data arriving from a base station subsystem belonging to another node from among the plurality of nodes: collecting the data; and encapsulating the results to be sent in an individual session into packets and sending the packets to the Backhauling Link Subsystem.


Patent
Elta Systems Ltd. | Date: 2016-07-13

The present disclosure provides an optical system suitable for detecting muzzle flashes in a scene, the optical system comprising: a first optical module (1) customized for detecting flashes at short range of the optical system by analyzing irradiance received on a first infrared sensor (12); a second optical module (2) customized for detecting flashes at long range of the optical system by analyzing irradiance received on a second infrared sensor (22); wherein: the first and second optical modules are configured to share a common field of view and to operate independently of each other.


Patent
Elta Systems Ltd. | Date: 2016-05-19

A calibration network system for an array antenna and method for calibrating of the array antenna are described. The system includes a pair of rectangular waveguides stacked in parallel relation to each other and spaced apart at a distance of a quarter of an operating wavelength. The rectangular waveguides includes through-holes extending through a side-wall of the stacked rectangular waveguides from a bottom of a lower waveguide to a top of an upper waveguide to accommodate coaxial transmission lines. The side-wall has openings between the through-holes and an interior region of the rectangular waveguides in order to provide coupling of the coaxial transmission lines into the pair of rectangular waveguides. The system includes 90 degree phase shifter coupled to the upper rectangular waveguide, and a power divider/combiner coupled to a reference T/R Module, to the 90 degree phase shifter and to the lower rectangular waveguide.


Patent
Elta Systems Ltd. | Date: 2016-08-26

A system and methods for cancelling spatial interference associated with an original multi-carrier signal carrying at least one data transmission sent by a transmitter to an antenna array comprising a plurality of antennae and having a receiver operatively associated therewith, the system receiving a plurality of received signals respectively including interference and the original signal as received by a respective individual antenna from among the plurality of antennae, the system comprising a spatial nulling device for generating a cleaner signal by reducing at least one spatial component of the interference; and a signal manipulator operative to manipulate a derivative of the received signal so as to cause the at least one data transmission to be more concentrated in a subset of frequency bands in which the spatial nulling device is more effective and to be less concentrated in frequency bands which do not belong to the subset of frequency bands.

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