Digiatl Composite Signal In The Transport Stream In Real-time Monitoring And Analysis

Digital signal monitoring and analysis of the main role to achieve the followingthree aspects: to implement quality monitoring, focuses on the monitoring content,usually is the result of the real-time digital signal analysis and, in the form of picturesshowed more directly displayed, convenient technical personnel to observe; Realizethe early warning analysis, for the whole network system optimization to providereal-time parameter acquisition so as to provide basis; According to the informationprovided by the system, to achieve fast fault location.Focus on the technical analysis, this paper analyzes how to realize the digitalcomposite signal in transmission flow realizes the real-time monitoring and analysissystem, the main work is as follows:The technical principle, digital composite signal monitoring system model; Arestated from the concept, technical principle, key technology with examples combinedwith code analysis; Main technology consists of nine parts: single PS composite flowand mixed flow to digital PS transmission flow analysis, the composite signalbitstream requirements of transmission equipment transmission flow of system, codeflow monitoring, the concrete analysis and implementation of key data SDTinformation extraction,101.2903error value analysis, PS information acquisition,bandwidth, information analysis, multiplexing structure analysis, real-time clock PCRanalysis; The nine parts is the foundation of the development and use of digital signalmonitoring part;Second, the digital signal monitoring system software design and implementationMainly analyzed in the practical problems encountered in the process ofdevelopment, and in the actual development what tool is used to solve of, users inactual use, may refer to various parameters; Me in this project is mainly responsible for the planning and writing code structure, is mainly to analyze the various datareal-time display, alarm and warning analysis;Three, when users use the various parameter setting methodMainly provides: system user table, log table, system running diagram, show thebandwidth information, all kinds of parameter setting and default reminder; Functionanalysis tool processing, USES the multistage fixed point compound PID filteringtechnology, automatic identification and use of multi-thread technology, constantlyoptimize the algorithm, the system can real-time on-line analysis of traffic flowmonitoring, early warning, all kinds of log query and so on, the current products havemarket, after nearly a year of development, further perfecting system, has been theuser’s high praise, has certain market benefit.