656 results about "Network analyser" patented technology

A method and system for analysing and measuring multiple sources of data over a communication network (18) so as to ascertain information or usage of one or more resources, such as resource servers (2). A data collection and processing means (20) collects and processes the data sources which are forwarded to a reporting server (34) as a combined data source made available to interested parties.

The invention relates to a method for calibrating a vectorial network analyser having n measurement ports and at least 2n measurement locations (n>1) by successive measurement of the reflection and transmission parameters at different two-port calibration standards, which are connected between the measurement ports in any desired order and must all have a transmission path, and three different n-port calibration standards, which are connected between the measurement ports in any desired order and which are not permitted to show transmission and by calculation of error coefficient and scattering matrix [Sx] with the 10-term or 7-term multiport method. An object of the invention is to propagate a method for calibrating these vectorial network analyser used for multiport measurement which permits a calibration with increased precision and considerable reproducibility of measurement. This problem is solved by the measurements of a thru standard, which is contacted between each possible measurement port combination, of n known, if appropriate different impedance standards and two unknown, there selves calibrated reflection standards at a n-one-port.

The embodiment of the invention provides a geographic information system applied to a power system and a method for improving display efficiency thereof. The system comprises a data unit, an interface engine unit, a power grid data model unit, a system component unit, a map layer management component and an application component unit, wherein the data unit stores two-dimensional geospatial data and attribute information of a power grid equipment object; the interface engine unit provides an interface display control and a message mechanism and is interacted with a user; the power grid data model unit is used for accessing the data unit to establish and maintain a power grid equipment model and performing network analysis on the power grid equipment model; the system component unit is usedfor calling services of the interface engine unit and the power grid data model unit and implementing display of a map and operation of the map, wherein the services comprise map display and component operation; the map layer management component is used for providing a management tool to support the display of the map; and the application component unit comprises a power grid modeling component and is used for calling the service of the power grid data model unit through the system component unit to perform modeling on power grid equipment. The system realizes function customization and flexible expansion.

The present invention relates to method and apparatus of analyzing a wired / wireless communication network to optimize performance of the network. In the present invention, data are continuously gathered from all elements constituting a wired / wireless communication network and are analyzed to find an element of which performance and / or efficiency deteriorates. If found, an optimal plan to resolve low performance and / or efficiency is chosen through the data analysis and is then provided in real time. The present invention also relates to a recording medium storing computer programs to conduct said procedures.

A network analyzer includes a sampler and a network anomaly detector. The sampler acquires communication data flowing through nodes by a data collector, estimates a topology of the nodes based on the acquired communication data by a topology estimator, stores the estimated topology of the nodes in a storage, reads out the estimated result from the storage to generate a predetermined item for each read-out topology of the nodes as a sampling rule by a rule generator, and samples the supplied communication data based on the generated sampling rule by a packet sampler. The topology of the network is thereby estimated in advance to narrow down objects to be sampled. The behavior of the communication data can thus be grasped in correlation between a target network and other networks.

The invention discloses a microgrid energy management system which comprises an information collection and data preprocessing unit, a network analysis unit and an energy optimization unit, wherein the information collection and data preprocessing unit performs data mining preprocessing on information, collected by SCADA / PMU mixed measurement, by adopting a CIM model and combining historical section management, the network analysis unit is used for realizing mixed measurement-based microgrid state estimation on the basis of network topology analysis, performing risk analysis and assessment and sensitivity analysis to realize early warning and warning for failure threat, and adopting corresponding precautionary measures or performing emergency control, and the energy optimization unit is used for performing microgrid energy optimization scheduling by combining forecast information and system operation analysis according to the information of the microgrid state estimation. The invention also provides a method which adopts the microgrid energy management system to perform microgrid energy management. The functions of the microgrid energy management system are further perfected, and the system safety, the power supply reliability and the system control accuracy and effectiveness of a microgrid are improved.

This invention relates to a diagnostic tool for networks that process messages in stages such as pipelined networks. In a pipelined network comprising tiers of servers, each tier of servers communicates only with adjacent tiers in a communications flow that processes messages in a sequence of tiers. The tool requires a controller located locally with respect to the pipelined network for generating messages to be processed by the pipelined network. Communication paths connect the controller to each tier of the pipelined network. A program executing at the controller detects a failure of the processing of the message by the pipelined network and receives diagnostic information from the tiers after the failure is detected. The diagnoses based on the retrieved information can proceed either manually or automatically, depending on how the information is collected. In order to automate the diagnosis, the program executing on the controller includes commands for sequentially analyzing each tier in the pipelined network in order to isolate the tier in which the failure occurred. For manual diagnosis, the program includes commands for simultaneously (or almost simultaneously) requesting information from each tier upon network failure. In the manual approach, distributed agents at all of the tiers gather information about the operating of the tier at the time of network failure.

The present invention provides for flexibly configurable network diagnostic modules that can implement any of a plurality of network diagnostic functions. A network diagnostic module receives an indication that a selected network diagnostic function (e.g., network analyzer, jammer, generator, bit error rate tester, etc.) is to be implemented. The network diagnostic module receives a bit file with instructions or data for implementing the selected network diagnostic function at one or more ports. The network diagnostic module identifies a programmable logic module (e.g., a Field-Programmable Gate Array (“FPGA”)) that controls the one or ports. The network diagnostic module loads a portion of the bit file at the identified programmable logic module to cause the programmable logic module and the one or more ports to interoperate to implement the selected network diagnostic function. A plurality of network diagnostic modules can be included in a common computer system chassis.

In performing network analysis, a declarative specification of a collector element and a declarative specification of a processing element are received. The declarative specification of the collector element specifies a dynamically updating query associated with networking components of a computer network. The processing element dynamically processes dynamically updated results of the dynamically updating query. At least the collector element and the processing element are executed. An indication of a detected anomaly is provided based at least in part on a result of the execution of the collector element and the processing element.

An automobile's maintenance port is wirelessly connected (for example, via an IEEE 802.11-based connection) to a plurality of gateways / routers that forward automobile diagnostic data (such as a series of diagnostic codes) to a network analyzer server. The network analyzer server offers subscribers a service providing analysis of the received diagnostic data, wherein such analyzed information is transmitted to one or more predetermined locations (such as to a personal computer of the subscriber or a mechanic's diagnostic device at a service station). Thus, homeowners and garages receive the same data and the system eliminates the need for garages to purchase expensive engine analyzers.

An apparatus includes a coupling, a diagnostic circuit, a cable modem circuit, a display, and a processing circuit. The coupling is configured to connect to a coaxial cable termination of a communication network, and is operable to receive broadband RF signals. The diagnostic circuit is operably coupled to the coupling to receive a first RF signal, and is operable to obtain diagnostic information regarding the first RF signal. The cable modem circuit is operably coupled to the coupling to receive a second RF signal, and is operable to generate data packets from the second RF signal. The cable modem is further operable to generate an RF transmission signal, the RF transmission signal including transmission data packets. The processing circuit is connected to the cable modem circuit and is operable to execute a web browser. The web browser is operable to cause the display to display information obtained from the data packets. The processing circuit is further operable to cause display of at least some diagnostic information.

The invention discloses a plain river network urban flood simulation method for drainage basin water system and urban pipeline network coupling. The method comprises the following steps that: S1: constructing a drainage basin runoff model; S2: constructing an urban rain pipeline network model; S3: coupling the drainage basin runoff model with the urban rain pipeline network model; and S4: carryingout urban flood simulation and prediction. By use of the method, network analysis between a drainage basin water system and an urban boundary is established, the runoff models of different scales ofthe drainage basin and the city can be linked, simulation accuracy is improved, and the method is high in regional applicability.

The invention is a system and method used for detection, analysis, and reporting on player metrics of a sporting event using video images. The main components of the invention are: grabbing a digital video image frame or grabbing an analog video image frame and converting the analog video image frame to a digital video image frame, extracting field of play markings from the video image frame(s) for use as image control points, creating a perspective projection registration model based upon the pairing of image control points with a set of user-defined control points representative of the field of play, extracting player image locations on each team from the video image frames, and applying the perspective projection transformation model to register participant image locations to their respective planimetric coordinate position on the user defined field of play. In the case of processing multiple video image frames, to correct errors across perspective projection transformation models developed on each image frame, a final bundle adjustment affine transformation model is applied to correct participant locations. Analysis of players use network analysis, pattern analysis, spatial interpolation, hypothesis testing, or forecast modeling can then be performed with reports in tabular, chart and graphic, or cartographic formats.

The present invention relates to method and apparatus of analyzing a wired / wireless communication network to optimize performance of the network. In the present invention, data are continuously gathered from all elements constituting a wired / wireless communication network and are analyzed to find an element of which performance and / or efficiency deteriorates. If found, an optimal plan to resolve low performance and / or efficiency is chosen through the data analysis and is then provided in real time. The present invention also relates to a recording medium storing computer programs to conduct said procedures.

A method for scoring a user's propensity for credit fraud includes forming a social graph from Call Detail Records (“CDR”), the users being nodes and weighted edges connecting node pairs representing a relationship between those users. Initial scores are assigned to users. A first user / credit applicant final score is calculated as a sum of all weighted initial scores of users having a degree of separation of n with the first user, along a path of connecting edges on the social graph, each weighted initial score being a product of the weight of the edges connecting the corresponding node pair, the user initial score, and the inverse square of the degree of separation with the first user. The summation of the degree weighted initial scores of users with degree of separation of n or less is the first user's credit-fraud score.

A vector network analyzer (VNA) in accordance with the present invention for measuring a frequency response of a device under test (DUT) includes a signal source, a port, a signal path connecting the port and the signal source, and a reflectometer receiver that when activated taps onto the signal path within a primary frequency range. The port is adapted to be electrically connected with the DUT while disconnected from a frequency-extension module or electrically connected to the DUT with the frequency-extension module serially connected between the port and the DUT. When the port is electrically connected with the DUT and electrically disconnected from the frequency-extension module, the reflectometer receiver is active so that the frequency response of the DUT is measureable within the primary frequency range using the reflectometer receiver and the signal source. When the port is electrically connected with the DUT in series with the frequency-extension module, the reflectometer receiver is deactivated so that the frequency response of the DUT is measureable within a extension frequency range wider than and substantially overlapping the primary frequency range using the frequency-extension module and the signal source.

Embodiments of the present invention are directed towards systems, methods, and computer readable media for performing multiport vector network analysis. Embodiments of the present invention relate to a multiport network analysis that is derived from a family of two port calibration techniques including Thru / Reflect / Line (TRL), Thru / Reflect / Match (TRM), Line / Reflect / Line (LRL), Line / Reflect / Match (LRM) and several others. An improved calibration method enables the use of a simplified switch matrix to perform accurate vector network analysis in communications and networking systems. After determining some characteristics through conventional methods, a two tier load match correction is performed on the results. The improved correction mechanism enables the system to perform comparably to systems with more complicated switch matrices.