Abstract: In a mobile communication system including a network having at least one base station operative to receive information in resource allocation terminology understandable to the base station and to allocate downlink bandwidth accordingly, at least one relay operative to convey to the base station information regarding needs of mobile communicators associated with the relay, using the resource allocation terminology understandable to the base station, and when receiving uplink bandwidth, from the base station, which generates an uplink between itself and the base station, to distribute the uplink bandwidth between the mobile communicators associated with the relay.

Abstract: The disclosed subject matter includes a method and system for navigating an unmanned ground vehicle (UGV), that include: generating, based on the scanning output data, a first map comprising a first group of cells and characterized by a first size; generating, based on the scanning output data, a second map representing an area smaller than that of the first map comprising a second group of cells, which are characterized by a second size being smaller than the first size; wherein each cell in the first group of cells and the second group of cells is classified to a class selected from at least two classes, comprising traversable and non-traversable, wherein the second part at least partly overlaps the first part; navigating the UGV based on data deduced from crossing between cells in the first map and second map.

Abstract: The present invention relates to an antenna device including an integrated matching circuit being implemented by at least one controllable capacitor for a number of frequencies. The at least one controllable resonating capacitor determines a resonance frequency of the antenna device. An object of the invention is to provide a compact antenna device which can obtain a desired matching characteristic without using a separate matching circuit which limits miniaturization of the antenna system as a whole and forms a factor of limiting the efficiency of the antenna and raising cost when the antenna is incorporated into the terminal.

Abstract: An RF communication system supporting both TDD and FDD and including an FDD duplexer coupled to an antenna; a first pair of FDD/TDD switches each coupled to the duplexer and to a Tx/Rx switch via a sub-band switch; and a second pair of FDD/TDD switches coupled to the Tx/Rx switch including a first FDD/TDD switch coupled to a baseband processor via an amplifier and down converter and a second FDD/TDD switch coupled to a baseband processor via an amplifier and up converter.

Abstract: A method of communicating information from a sensor concerning a received signal, comprising: responsive to receiving by at least one detecting sensor, during a defined time interval, data indicative of an entire data of a frequency band received by it during the defined time interval, comprising at least one signal emitted at least one emitter, and to detecting of the emitted signal by the at least one detecting sensor, sending from the sensor assistance information corresponding to the detected emitted signal during the defined time interval, to at least one non-detecting sensor. This information can be utilized by the non-detecting sensor to perform an action with respect to data indicative of an entire data of the frequency band received by the non-detecting sensor during a corresponding defined time interval, the action corresponding to at least one emitted signal received by the non-detecting sensor during the corresponding defined time interval.

Abstract: Antenna system comprising processor/s in data communication with receiving segment/s in motion on ground and computer memory accessible to processor which stores a computer representation indicative of desirable polarization behavior parameter/s of the airborne transmitting segment, for each relative location of the airborne and ground segments, the processor providing a current relative location of the airborne transmitting and receiving segment/s on the ground, accessing a desirable polarization behavior parameter associated with the current relative location of the airborne and receiving segment/s on ground from the computer representation, accessing a current polarization behavior parameter of the receiving segment/s' antenna, computing a real time adjustment of the polarization's axial ratio which, if applied to the receiving segment antenna, will change the receiving segment antenna's polarization behavior parameter from the current polarization behavior parameter to the stored one, and feeding the real

Abstract: A device for calibrating a radar or an antenna and embedded on an aerial vehicle, comprising: a processing unit configured to apply a delay to an incoming electromagnetic signal, wherein the device is configured to provide said electromagnetic signal with said delay to an emitter for its back transmission, wherein the processing unit is configured to control said delay according to one or more delay values, wherein each delay value simulates a virtual range of the device or of the aerial vehicle with respect to said radar or antenna receiving said transmitted electromagnetic signal, said virtual range being different from an actual range of the device or of the aerial vehicle, for calibrating said at least one radar or antenna based on said transmitted electromagnetic signal which simulates a virtual range of the device or of the aerial vehicle with respect to said at least one radar or antenna.

Abstract: A method operative in conjunction with a cellular communication network having a core element and comprising providing moving relays including base and mobile station functionality and a relay resource manager, all co-located, including providing an emergency moving relay from among the moving relays further including a simulated stationary network that includes a simulated IP connectivity gateway communicating with a simulated mobility management entity. The simulated stationary network simulates a stationary network's operation; the emergency moving relay being a root of a sub tree that includes moving relays and mobile stations, and is configured to utilize its mobile and base station functionalities and relay resource manager for operating in: (i) normal mode: emergency moving relay communicates with other relays in the network and with the stationary network; (ii) emergency mode, including, in response to an emergency event, finding new networks to connect to.

Abstract: An improved mobile/cellular/wireless communication method e.g. for use-cases in which portions (“important signal” or “needed signal”) of a signal (“original signal”) are of particular interest in a given situation but not adequately received in that situation, the method comprising generating an auxiliary signal operative e.g. to bridge between imperfect ability/ies of the transmitters in the situation, and specific needs of the receivers in the situation, and/or to improve reception of the important signal and/or important signal information; and transmitting at least the auxiliary signal to the receiving end such that a representation of characteristics of the important signal, comprising the important signal itself and/or important signal information characterizing the important signal, is replaced enhanced or augmented by the auxiliary signal, at the receiving end.

Abstract: According to examples of the presently disclosed subject matter, there is provided a system for estimating a source location of a projectile, comprising an optics an optics subsystem, a radar subsystem and a processor. The processor is adapted to use range and velocity measurements obtained from data provided by the radar subsystem, a source direction and an event start time obtained from data provided by the optical subsystem and a predefined kinematic model for the projectile for estimating a range to a source location of the projectile.

Abstract: A method of estimating the location of a signal source comprises, by a processing unit: determining ???m,n which represents a difference between accumulated phases of signals, Sm and Sn, received by at least one pair of the receivers, determining a first estimate of the location of said signal source based on position data and ???m,n of at least one pair of receivers, said first estimate being associated with an accuracy area, determining data representative of difference in times of arrival of modulation patterns of the signals Sm, Sn, wherein said data comprise an ambiguity, and for said at least one pair of receivers, using at least said data representative of difference in times of arrival of the modulation patterns of the signals, ???m,n, and said accuracy area, to obtain second estimates êSrck of the source location, at least some of them being located within the accuracy area.

Abstract: A cellular communication system comprising a population of cellular communication network nodes comprising a stationary core, a plurality of base stations, and at least one node having mobile station functionality; and a client tunneling functionality co-located with the node having mobile station functionality which is operative to use network topology information obtained via the mobile station functionality to initiate generation of a tunnel having a first end at the node and a second far end at the stationary core.

Abstract: A system operative to down a target drone having propellers deployed along a perimeter p, comprising a processor-controlled interceptor drone bearing a processor-controlled flexible elongate intercepting agent cannon and an onboard camera; and an onboard processor to receive sensed wind conditions and to a firing distance d, between interceptor and target drones, given a firing angle A, and wherein the processor is configured to track the target drone using imagery generated by the onboard camera including at least once, when said wind conditions exist, guiding the interceptor drone to a firing position whose distance from the target drone is d, and commanding the cannon to fire at firing angle A, once said firing position is achieved, thereby to use the flexible elongate intercepting agent to down target drones.

Abstract: A tracking system and method for constructing pictures of tracks of moving targets on a scene from electro-optical (EO) detections are described. The system includes EO sensors, and an EO tracker constructing pictures of the tracks of the targets. The EO tracker includes a pre-processing system for receiving EO detections of the targets and locating the targets on a world map, a candidate track selection system for finding candidate tracks, a track initializing module for receiving the EO detections and initializing a new track, an assigning system for assigning the EO detections to the candidate tracks, a data updating system for updating the candidate tracks after the assigning, and for generating an ambiguity set of tracks and an exclusion set of tracks, a picture providing system for receiving the ambiguity set and the exclusion set to generate a picture, and a tracker database for storing the updated tracks.

Abstract: A transponder system is presented, comprising first and second antenna arrays each comprising a plurality of antenna elements arranged in a predetermined geometry. The antenna elements of the first antenna array are respectively interconnected with corresponding antenna elements of the second antenna array by respective connection lines thereby forming plurality of receiving-transmitting pairs of antenna elements. A receiving-transmitting pair is configured to receive an input electro-magnetic signal by one antenna element thereof and transmit a corresponding output signal by the other antenna element, thereby enabling collective collection of a signal waveform and transmission of a corresponding output signal waveform. The first and second antenna arrays are rotatable with respect to one another about at least one predetermined rotation axis, thereby enabling variation of direction of propagation of the output signal waveform with respect to direction of propagation of the collected signal waveform.

Abstract: A fusion system and method for constructing tracks of a ground target from radar and optical detections are described. The system includes a radar channel and an optical channel. The radar channel includes a Ground Moving Target Indicator (GMTI) radars providing GMTI detections in the form of GMTI plots, a GMTI tracker configured for constructing GMTI tracks of the ground target from the GMTI plots, and a Smooth Radar Plots generator configured for sequentially in time producing smooth radar plots in the form of locations of ground target on the GMTI tracks and corresponding location errors. The optical channel includes electro optical (EO) sensors sequentially in time providing EO detections in the form of coordinates of the ground target, and a combiner tracker configured for combining data streams of the radar channel with data streams of the optical channel, and producing fused tracks of the ground target.

Abstract: A method of communicating information from a sensor concerning a received signal, comprising: responsive to receiving by at least one detecting sensor, during a defined time interval, data indicative of an entire data of a frequency band received by it during the defined time interval, comprising at least one signal emitted at least one emitter, and to detecting of the emitted signal by the at least one detecting sensor, sending from the sensor assistance information corresponding to the detected emitted signal during the defined time interval, to at least one non-detecting sensor. This information can be utilized by the non-detecting sensor to perform an action with respect to data indicative of an entire data of the frequency band received by the non-detecting sensor during a corresponding defined time interval, the action corresponding to at least one emitted signal received by the non-detecting sensor during the corresponding defined time interval.

Abstract: The present disclosure provides a computer implemented method of providing an indicator useful for piloting an aircraft. The aircraft comprises an antenna configured to communicate with a transceiver. The method comprises: obtaining an antenna envelope characterizing directions relative to the aircraft for which a directive gain of the antenna exceeds a predetermined threshold; determining a direction of the transceiver relative to the aircraft; calculating a maneuvering range of the aircraft by comparing the antenna envelope and the transceiver direction, wherein the maneuvering range is indicative of eligible orientations of the aircraft for maintaining the transceiver within the antenna envelope; and outputting data indicative of the maneuvering range.

Abstract: System for ex post facto upgrading of at least one Legacy personal communication device including a legacy modem and lacking at least one desired wireless communication feature, the system comprising an upgraded communication device including an auxiliary modem physically connected via an ex post facto physical connection to a Legacy personal communication device having at least one legacy wireless output channel which has been neutralized or disabled.

Abstract: A method for repetition of uplink transmissions comprises: a repeater apparatus, aka uplink repeater, has a controller, a downlink receiver and an uplink transmitter and receiver. Use the downlink receiver to receive a downlink signal from a base station whose cell the uplink repeater is serving. For downlink frame(s) thus received: the controller demodulates at least a portion of the downlink frame and extracts MAP_D data describing allocation of an uplink transmission in upcoming uplink frame(s) to be transmitted after the downlink frame; controller determines a subset of UL transmission allocations to be repeated, to define a subset of mobile stations in the cell, whose uplink transmissions are to be repeated; the uplink receiver receives the UL transmissions to be repeated from each mobile station, and repeats the UL transmissions to be repeated by commanding the UL transmitter to send the content.