43 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 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.

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.

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.

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.

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 method is suitable for the field of tactical communication networks, and provides a multi-granularity hierarchical tactical communication network logic situation display method. A complete scene graph element is drawn to show the logic situation of the tactical communication network, the method includes a communication vehicle graph element, a communication equipment graph element, a communication network system graph element and a backbone node graph element, and a communication link graph element which are represented by basic geometric figures and can display different networks, a network topological relation, a backbone node composition structure, a link, different communication equipment or other information, the method is a method capable of displaying the tactical communicationnetwork logic situation in a multi-granularity hierarchical manner. In a preferable scheme, the on-off states, faults, link quality degradation or other states of each entity are expressed by fillingwith lines of different colors and colors in the running process of the network, so that the logic situation of the tactical communication network is more comprehensive.