44 results about "Tactical communications" patented technology

A telecommunication and multimedia management apparatus and method that supports voice and other media communications and that enables users to: (i) participate in multiple conversation modes, including live phone calls, conference calls, instant voice messaging or tactical communications; (ii) review the messages of conversations in either a live mode or a time-shifted mode and to seamlessly transition back and forth between the two modes; (iii) participate in multiple conversations either concurrently or simultaneously; (iv) archive the messages of conversations for later review or processing; and (v) persistently store media either created or received on the communication devices of users. The latter feature enables users to generate or review media when either disconnected from the network or network conditions are poor and to optimize the delivery of media over the network based on network conditions and the intention of the users participating in conversations.

The invention relates to the field of distributed combat simulation,and provides a battle simulation training system and method of attack drone formation. According to physical nodes,the battle simulation training system is divided into a drone and launch platform simulation node,a drone formation command node,a ground plan control node,a neighbour equipment simulation node,an enemy troop simulation node,a tactical communication simulation node,a situation display node,a train control node and a data record analyze node; according to battle simulation modeling,an environment simulation model,amodel system which comprises a simulation entity model and a military conceptual model is established. The battle simulation training system has good supporting effects on tactical cooperative training,operational plan deduction and equipment improvement and optimization of the attack drone formation.

A telecommunication and multimedia management apparatus and method that supports voice and other media communications and that enables users to: (i) participate in multiple conversation modes, including live phone calls, conference calls, instant voice messaging or tactical communications; (ii) review the messages of conversations in either a live mode or a time-shifted mode and to seamlessly transition back and forth between the two modes; (iii) participate in multiple conversations either concurrently or simultaneously; (iv) archive the messages of conversations for later review or processing; and (v) persistently store media either created or received on the communication devices of users. The latter feature enables users to generate or review media when either disconnected from the network or network conditions are poor and to optimize the delivery of media over the network based on network conditions and the intention of the users participating in conversations.

A high-directivity transponder system uses a dual system of a retrodirective array transmitting a data signal peak toward an interrogator source, and a self-null-steering array transmitting a null toward the interrogator source and a jamming signal elsewhere, resulting in high S / N reception at the interrogator source and avoidance of interception. Integrating modulators would allow each array to transmit different data while the spectra of the transmitted signals are identical, thus disabling interception. The system enables secure point-to-point communications and can be used for short-distance wireless data transmission systems such as wireless LAN and RFID servers. As another aspect, self-steering signal transmission is employed for randomly oriented satellites using circularly polarized, two-dimensional retrodirective arrays. Quadruple subharmonic mixing is used as an effective means of achieving phase conjugation when a high-frequency LO is not feasible or inapplicable. These features may be used for small-satellite communications, secure tactical communications, search and rescue, enemy location fixing and tracking, UAV command and control, forest fire detection, marine-based tracking, and many other applications requiring secure communications with high signal directivity.

A telecommunication and multimedia management apparatus and method that supports voice and other media communications and that enables users to: (i) participate in multiple conversation modes, including live phone calls, conference calls, instant voice messaging or tactical communications; (ii) review the messages of conversations in either a live mode or a time-shifted mode and to seamlessly transition back and forth between the two modes; (iii) participate in multiple conversations either concurrently or simultaneously; (iv) archive the messages of conversations for later review or processing; and (v) persistently store media either created or received on the communication devices of users. The latter feature enables users to generate or review media when either disconnected from the network or network conditions are poor and to optimize the delivery of media over the network based on network conditions and the intention of the users participating in conversations.

A high-directivity transponder system uses a dual system of a retrodirective array transmitting a data signal peak toward an interrogator source, and a self-null-steering array transmitting a null toward the interrogator source and a jamming signal elsewhere, resulting in high S / N reception at the interrogator source and avoidance of interception. Integrating modulators would allow each array to transmit different data while the spectra of the transmitted signals are identical, thus disabling interception. The system enables secure point-to-point communications and can be used for short-distance wireless data transmission systems such as wireless LAN and RFID servers. As another aspect, self-steering signal transmission is employed for randomly oriented satellites using circularly polarized, two-dimensional retrodirective arrays. Quadruple subharmonic mixing is used as an effective means of achieving phase conjugation when a high-frequency LO is not feasible or inapplicable. These features may be used for small-satellite communications, secure tactical communications, search and rescue, enemy location fixing and tracking, UAV command and control, forest fire detection, marine-based tracking, and many other applications requiring secure communications with high signal directivity.

A telecommunication and multimedia management apparatus and method that supports voice and other media communications and that enables users to: (i) participate in multiple conversation modes, including live phone calls, conference calls, instant voice messaging or tactical communications; (ii) review the messages of conversations in either a live mode or a time-shifted mode and to seamlessly transition back and forth between the two modes; (iii) participate in multiple conversations either concurrently or simultaneously; (iv) archive the messages of conversations for later review or processing; and (v) persistently store media either created or received on the communication devices of users. The latter feature enables users to generate or review media when either disconnected from the network or network conditions are poor and to optimize the delivery of media over the network based on network conditions and the intention of the users participating in conversations.

A telecommunication and multimedia management apparatus and method that supports voice and other media communications and that enables users to: (i) participate in multiple conversation modes, including live phone calls, conference calls, instant voice messaging or tactical communications; (ii) review the messages of conversations in either a live mode or a time-shifted mode and to seamlessly transition back and forth between the two modes; (iii) participate in multiple conversations either concurrently or simultaneously; (iv) archive the messages of conversations for later review or processing; and (v) persistently store media either created or received on the communication devices of users. The latter feature enables users to generate or review media when either disconnected from the network or network conditions are poor and to optimize the delivery of media over the network based on network conditions and the intention of the users participating in conversations.

A Method and Apparatus to Perform Surgical Reactive Jamming while Maintaining Simultaneous Tactical Communications is disclosed. The system provides an enhancement to surgical reactive jammers that combines near-real-time jamming capability with the additional feature of allowing tactical communications. The tactical communications transmissions are compressed and packetized such that they can be broken up and transmitted during the jamming system's look-through periods. This approach facilitates listening during these look-through periods (not only for EW emitters, but also for friendly communications signals). The system should allows for talk during these look-through periods (“talk-through” periods). Such a system is unique in that it can automatically calculate the best frequency for a surgical reactive jammer to use against enemy targets as well as providing a fully secure tactical communications link which is synchronized with other units in the field. This invention is therefore vital to the interests of United States national security as it provides a valuable Electronic Warfare capability.

An example method of tactical communication is provided. The method includes receiving information indicating a tactical situation associated with a target area. The tactical situation is one of a missile in-flight, an eavesdropper, a signal jammer, and a transceiver located in a zone of interest. The method further includes performing a beamforming process including instructing transmission of a plurality of signaling beams from one or more transmitters toward the target area. The tactical situation may be associated with a foe and the plurality of signaling beams generate interference inhibiting communication with by the foe. The tactical situation may be associated with a friend and the plurality of signaling beams generate decodable signal for enhancing communication with the friend.

A method of bridging radio communication networks having incompatible transmission protocols. Network radios each configured for the protocol of an associated network are provided. An audio terminal of each radio outputs analog audio signals that the radio detects over its network, and a microphone terminal of the radio inputs analog audio signals for transmission over the network. The signals from the audio terminal of a given network radio are converted into digital audio signals and input to a selected port of a server that implements a PBX application for bridging the networks selectively with one another. The digital audio signals input to the selected port are converted into corresponding analog audio signals and applied to the microphone terminal of each network radio with which the given network radio is to be bridged. Telephone devices having access to a PSTN can also be bridged with a network by the PBX application.

A system for enabling interoperability among various kinds of communications equipment and information transmission formats on the battlefield or during tactical missions. The system includes a multi-message translator (MMT) for translating a source text message having a first set of word fields defined according to a source message format, into a sink message having a second set of word fields defined according to a sink message format. The system also includes a voice bridging gateway (VBG) for bridging multiple voice communication networks having associated transmission protocols that are incompatible with one another. Dismounted soldiers obtain location based services including geo-referenced maps, and tactical communications including voice and text messaging, using smart phones or other lightweight COTS client devices that link through a personal networking node (PNN) server to one or both of the MMT and the VBG.

The invention relates to the communication field, and particularly relates to a self-organizing emergency communication network system. The self-organizing emergency communication network system comprises an Ad-hoc self-organizing network, a first communication unit, a second communication unit and a remote command center, wherein one end of the Ad-hoc self-organizing network is connected with the first communication unit; the other end of the first communication unit is connected with the second communication unit; and the second communication unit is connected with the remote command center. The invention also relates to the communication method of the system. The method comprises the following steps of: establishing Ad-hoc self-organizing networks; connecting all Ad-hoc self-organizing networks to the input / output end of the first communication unit; connecting the input / output end of the first communication unit to the input / output end of the second communication unit; and connecting the input / output end of the second communication unit to the input / output end of the remote command center. The self-organizing emergency communication network system and the communication method are mainly applied to the aspects of tactical communications, homeland security, dibaster assistance, fire emergency disposal and the like.

Method and Apparatus to Perform Reactive Jamming While Simultaneously Avoiding Friendly Pseudo-Random Frequency Hopping Communications is disclosed. The system provides an enhancement to surgical reactive jammers that combines near-real-time jamming capability with the additional feature of allowing tactical communications. The jammer includes a synchronization subsystem that synchronizes jammer lockout frequencies with those frequencies being hopped to by units that are members of a friendly communications network. The synchronization subsystem is coordinated with, and therefore tied to the time-synchronized cryptography of the friendly communications net. As a result, the jammer will be aware, on a real-time basis, which frequency the friendly communications network will next be hopping to. The jammer's awareness of these future frequencies will allow those frequencies to be “locked out” of the jammer's transmission band dynamically.

Provided is a method and apparatus for compressing a text and an image. When compressing the text and image, it is possible to group valid lines with data into each line having a common element, and compress and encode the data of the valid lines. Accordingly, it is possible to reduce a data loss that may occur in a tactical communication environment with a poor channel state due to a bit sleep or a burst error. In the case of the text, it is possible to perform lossless compression on only a valid line with data and thereby improve compression efficiency. In the case of the image, it is possible to perform loss compression on valid lines, and then restore the partially damaged data using an ECC even when data is partially damaged. Accordingly, it is possible to improve compression efficiency and the entire data transmission success rate.

The invention relates to the technical field of wireless communication, and discloses a lightweight service interaction protocol method in a tactical environment, which comprises a protocol format design method and a service interaction process control method. The protocol format design method adapts to a narrow-band environment by shortening a protocol format. wherein the shortened protocol format comprises a message header and an optional message body, the message header comprises a protocol identifier, a protocol version number, a message type, an identifier bit, an encryption state, a compression state and the total length of the message, the protocol identifier and the protocol version number respectively account for 1 byte, the message type and the identifier bit account for 1 byte in total, and the encryption state and the compression state account for 1 byte in total; and the total length of the message accounts for 14 bytes. The method can adapt to bandwidth characteristics ofvarious communication channels in a tactical communication network, and realizes remote service interactive access on an unstable communication link on the premise of low overhead.

A Method and Apparatus to Perform Surgical Reactive Jamming while Maintaining Simultaneous Tactical Communications is disclosed. The system provides an enhancement to surgical reactive jammers that combines near-real-time jamming capability with the additional feature of allowing tactical communications. The tactical communications transmissions are compressed and packetized such that they can be broken up and transmitted during the jamming system's look-through periods. This approach facilitates listening during these look-through periods (not only for EW emitters, but also for friendly communications signals). The system should allows for talk during these look-through periods (“talk-through” periods). Such a system is unique in that it can automatically calculate the best frequency for a surgical reactive jammer to use against enemy targets as well as providing a fully secure tactical communications link which is synchronized with other units in the field. This invention is therefore vital to the interests of United States national security as it provides a valuable Electronic Warfare capability.

Method and Apparatus to Perform Reactive Jamming While Simultaneously Avoiding Friendly Pseudo-Random Frequency Hopping Communications is disclosed. The system provides an enhancement to surgical reactive jammers that combines near-real-time jamming capability with the additional feature of allowing tactical communications. The jammer includes a synchronization subsystem that synchronizes jammer lockout frequencies with those frequencies being hopped to by units that are members of a friendly communications network. The synchronization subsystem is coordinated with, and therefore tied to the time-synchronized cryptography of the friendly communications net. As a result, the jammer will be aware, on a real-time basis, which frequency the friendly communications network will next be hopping to. The jammer's awareness of these future frequencies will allow those frequencies to be “locked out” of the jammer's transmission band dynamically.

The invention provides a tactical communication network countermeasure method based on signal recognition and network reconnaissance. The method comprises the steps of tactical communication network comprehensive situation awareness, tactical communication target attribute recognition based on time-frequency-space characteristics, detection of the specific tactical communication target based on synchronization characteristics, time-division multi-target jamming based on network key information and tactical communication network countermeasure based on synchronization decoy. The core of the method is to recognize the target attributes, locate the network node, analyze the traffic type and perform statistics of the traffic volume by using the signal time-frequency spatial domain characteristic and network characteristic information so as to realize communication signal recognition and network comprehensive situation analysis under the complex battlefield electromagnetic environment. Time-sharing jamming is performed by using the sparsity of the network key information for different target networks to improve the multi-target jamming capacity, and synchronization decoy jamming is performed by using the vulnerability of the synchronization mechanism to effectively counter the ad hoc encrypted communication network characterized by multi-hop routing and forwarding and high-speed frequency hopping.

The invention provides an intelligent tactic communication network opening method. According to the intelligent tactic communication network opening method, a tactic communication network parameter distribution channel is opened preferentially by utilizing a Beidou short message channel, and distribution of the whole network parameter files is then implemented by utilizing a tactic communication network parameter distribution channel. In the whole process, manual intervention is reduced to the extremely great extent, automatic forwarding and note-adding of the parameters are realized, and the opening efficiency of the tactic communication network is increased efficiently. The intelligent tactic communication network opening method has the beneficial effects that: an opening control center in the network firstly transmits the initial channel opening parameters of a satellite terminal, a command post WLAN, a high-speed data radio station and an ultra-short wave radio station by utilizing the Beidou short message channel to help a piece of opening control system software to realize a method of opening a satellite broadcasting channel, a broadcasting channel of the command post WLAN, an initial channel of the high-speed radio station, an initial channel of the high-speed radio station and an initial channel of the ultra-short wave radio station intelligently; and the actual working parameters of all the equipment of the whole network (including exchange, transmission, radio station, satellite and etc.) are distributed by virtue of the opened satellite broadcasting channel, the opened broadcasting channel of the command post WLAN, the opened initial channel of the high-speed radio station and the opened initial channel of the ultra-short wave radio station. Automatic forwarding and note-adding of the parameters are adopted in the whole process, so that manual intervention is reduced to the extremely great extent, and rapid and intelligent opening of the whole tactic communication network is realized.

The invention discloses a tactical communication network key node identification method based on physical layer data, and relates to the technical field of network communication. The method comprisesthe steps of collecting physical layer data from a tactical communication network, training a full-connection BP neural network, acquiring a simulation time sequence signal of a MAC protocol, extracting a characteristic parameter set I consisting of frame analogy parameters and duty ratio parameters in the simulation time sequence signal, training a support vector machine, extracting a characteristic parameter set II composed of frame analogy parameters and duty ratio parameters in the networking data, identifying the MAC protocol used by the tactical communication network, extracting a time sequence segment to form sample data II, marking a network node corresponding to each data segment, performing mode matching on the networking data, identifying a topological structure of the tacticalcommunication network, and according to the topological structure of the tactical communication network, identifying key network nodes of the tactical communication network. According to the method, the network topology structure of the tactical communication network can be obtained without performing protocol analysis on physical layer data, and the key network nodes can be identified according to the network topology structure.

Each of a number of gateway network radios operates with a transmission protocol of an associated one of plural incompatible communication networks. Each network radio has an audio terminal for producing first audio signals detected from transmissions of user radios in its associated network, and a microphone terminal for receiving second audio signals for transmission to the user radios. A voice bridging gateway server has multiple ports each corresponding to one of the networks for coupling to the network radio associated with the one network. Each port receives the first audio signals from the audio terminal of the associated network radio, and produces the second audio signals for applying to the microphone terminal of the network radio. The server implements a private branch exchange application whereby user radios in a given communication network can be voice bridged with user radios in a selected one or more of the other networks.

A system for enabling interoperability among various kinds of communications equipment and information transmission formats on the battlefield or during tactical missions. The system includes a multi-message translator (MMT) for translating a source text message having a first set of word fields defined according to a source message format, into a sink message having a second set of word fields defined according to a sink message format. The system also includes a voice bridging gateway (VBG) for bridging multiple voice communication networks having associated transmission protocols that are incompatible with one another. Dismounted soldiers obtain location based services including geo-referenced maps, and tactical communications including voice and text messaging, using smart phones or other lightweight COTS client devices that link through a personal networking node (PNN) server to one or both of the MMT and the VBG.

The invention discloses a tactical communication network key node identification method based on environmental feedback, and relates to the technical field of network communication, and the method comprises the steps: selecting a network node from a tactical communication network as a target interference node; the target interference node is interfered, in the interference process, physical data are collected from the tactical communication network, and an environment feedback value v of the target interference node is obtained according to the number of frames of the collected physical data;calculating an average environment feedback value reware of the target interference node according to the interference times Playcount of the target interference node and the environment feedback value v; and repeating the operation process until the selected target interference node converges and the obtained average environment feedback value reware is stable, and taking the current physical interference node as a key node of the tactical communication network. In the process of identifying the key node, only the interfered physical layer data is required to be acquired, a network topology structure is not required to be acquired, the physical data is not required to be analyzed, and feedback information required to be acquired is simple and easy to obtain.

A method of translating a source message having a first set of defined word fields in a source message format, into a sink message having a second set of defined word fields in a desired sink message format. A common message format (CMF) is defined to have a third set of word fields that corresponds to a union of the first and the second sets of word fields. For any given word field in the third set of word fields in the CMF, information contained in a corresponding word field in the source message, if any, is mapped to the given word field in the CMF. For any given word field in the second set of word fields in the sink message format, information contained in a corresponding word field of the CMF, if any, is mapped to the given word field in the sink message.

The invention provides a UHF-frequency-band high-gain left-handed circularly polarized antenna. An antenna body comprises a first connecting seat, a UHF-frequency-band choke tube, a second connecting seat, a connecting rod and a third connecting seat which are sequentially arranged from bottom to top, and the first connecting seat, the second connecting seat and the third connecting seat are provided with a reflecting ground, a UHF-frequency-band radiator and a director; the director, the UHF-frequency-band radiator and the reflection ground comprise four cross oscillator arms, director oscillator arms, UHF-frequency-band radiator arms and reflection oscillator arms are movably connected with the third connecting seat, the second connecting seat and the first connecting seat; a UHF-frequency-band coaxial feeder connected with the UHF-frequency-band radiation oscillator arms is arranged at the bottom of the first connecting seat; and the gain of the antenna body is superior to 6dBi in a full frequency band, and the antenna body has an access networking function. The access networking comprises access to a tactical satellite UHF communication network and a tactical radio station Internet. And the antenna has a relatively strong anti-interference capability and can better meet the requirements of new-generation tactical communication.

The invention relates to an intelligent power supply system of solar military tactical communication equipment, which is equipped with energy storage and charging, is especially suitable for individual soldiers, and belongs to the technical field of solar military communication equipment. Technical Features The power supply equipment 1 composed of solar energy intelligent management and control system is like a backpack 103 power supply, equipped with a photoelectric energy conversion system 101 and a control box 102 . The chip 101-3 packaging technology of the flexible photovoltaic module 101 and the hollow through hole 101-10 structure and confluence technology are connected to the input voltage detection module 102-802, the button module 102-808, and the output voltage detection module by the intelligent control center module 102-801 102-810, the output current sampling module 102-811, the discharge module 102-812, and the single-wire communication connection module 102-813 constitute a control loop. With outstanding creativity and remarkable progress. Such as multi-dimensional folding and curling are easier, the electrode is easily broken, and the overall module combination is light in weight.

The invention provides an information processing method and device in a game, equipment and a storage medium. The method comprises the steps: in response to a starting operation used for starting to acquire text elements, acquiring a target element combination selected through a first selection operation, wherein the target element combination comprises at least one target role and at least one target object, the target role is a player control role of an own side and / or an enemy side in the game scene, and the target object comprises a target operation control and / or a virtual target in the game scene; and in response to an ending operation of ending the first selection operation, sending a target message determined based on the target element combination. Through the method, players can perform relatively complex tactical communication, and compared with a text editing mode, the mode occupies relatively short time of the players, so that the effective control duration of the player on the virtual character can be prolonged.