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The aviation community is currently working on the standardization of data communication systems for the future air traffic management. In this context, the International Civil Aviation Organization (ICAO) has initiated a work on standardization of an IPv6-based aeronautical telecommunications network and on future radio access technologies, respectively. In this paper, we integrate L-Band Digital...
To resolve the problem of sampling speed and real-time continuous mass storage in large instantaneous bandwidth radar echoes intermediate frequency direct sampling, a wideband radar intermediate frequency signal high-speed acquisition and real-time storage system is developed in this paper. Firstly, according to bandpass signal alias-free sampling theorem, the sampling frequency is determined. And...
Contradiction between the rapid expansion of WAN traffic demand and local area network export-bandwidth force the flow control nodes are deployed to the local area network key links. The article analysis of the traffic needs of network users. From the perspective of the LAN operations, described the principles and objectives of channel flow control that based on application layer the principle, designed...
With the popularity of the Internet, the extension speed of network resources always lags behind the demands of network bandwidth of network users. It is not an omnipotent solution to increase the available bandwidth. That is why it is important to analyze, control and manage network traffic accurately nowadays. It is reported that, as one of the prominent occupants, peer-to-peer (P2P) traffic takes...
This paper presented a high speed data acquisition system for real-time appLication. The hardware of system mainly consists of data acquisition, distribution and storage section. A 3Gsps ultra high-speed ADC is appLied in acquisition section. In distribution section, the original data stream will be distributed into four streams. Each data stream will be stored into one soLid-state storage card which...
The vision of a smarter grid very much depends on a fast communication infrastructure that can provide near realtime data delivery and can handle security issues. These issues become more and more critical when we imagine having phasor measurement units everywhere in the power grid. The latency and bandwidth requirements for smart grid are two very critical issues among these. This paper attempts...
Nowadays the use of so-called Network Control Systems is a common practice. Although convenient, networks introduce several perturbations to the control system, due to the additional latency, jitter and even errors that arise when messages fail to be delivered. This paper presents a control architecture that attenuates the impact of the network on the controller performance. The proposed architecture...
In this paper, we present an adaptive, bandwidth-based group scheduling mechanism that supports reconfiguration of components in compositional software architectures. The middleware-level scheduler allocates resources accurately for real-time threads while non-real-time threads are dealt with in a manner that makes the most of the remaining bandwidth within a thread group. We have designed and implemented...
In this paper, we present an adaptive method for maximizing network bandwidth utilization for the real-time applications. RTP protocol is chosen as the transport protocol and the network utilization is provided by increasing and decreasing the transmission rate of the RTP traffic. Our method employs a PID controller that keeps the RTP packet loss fraction at a predefined reference point. Packet loss...
With the development of the digital resources construction in universities, the rapidly growing digital resources drive the surge in demand of storage. This paper introduces the virtual storage technology, and describes how the virtual storage technology is applied in digital resources storage in higher education.
A new algorithm is proposed to solve the issue of dynamically changing tracking window size in Mean-shift progress. Firstly, the algorithm detects feature points in the target area of current and previous frames using SURF. Epanechnikov kernel function is introduced to increase the weights of feature points in the central area. After matching feature points in two frames, we can calculate the target...
In order to solve large amounts of data transfer problems of industrial control, the paper proposes a fault-tolerant mechanism for UDP (Class UDP). Simulation system was developed in NS II , it adopts two-level tree structure to simulate industrial control systems. The simulation system tests class UDP transmission performance. The measurements show that class UDP can provide better QoS guarantee...
Disparity map plays an important role in 3DTV and FTV systems. Despite recent advances, state-of-the-art algorithms fail to generate a precise disparity map rapidly enough for VLSI real time processing. Belief Propagation (BP) is a popular global optimization algorithm and has several advantages for hardware implementation. However, it requires high bandwidth, memory and computational costs. Tile-based...
In the domain of video streaming, Scalable Video Coding (SVC) comes as a solution that adapts to network bandwidth fluctuation and to terminals heterogeneity. The multilayer-coding criterion of SVC has increased its correlation with the streaming over multiple paths. However, an important challenge that we still need to face is how to maximize the overall video quality in a way that satisfies the...
AFDX (Avionics Full Duplex Switched Ethernet) developed for the Airbus A380 represents a major upgrade in both bandwidth and capability, but guaranteed kinds of service presents challenges to system designers. Scheduling new classes of traffics with different priorities on the same AFDX network is urgently to resolve. However, there's no consideration of how buffer size influence the traffic performance...
Smart meter network is one of the backbone for modern power grid or smart grid. It is very critical to have the right technologies for the efficient operation of smart meter network. Smart meter network requibres the right bidirectional communications medium and interoperability capability. As thousands of meters will be interconnected to the distribution power network, it is vital to combine communications...
As a flexible and cost effective solution for a scalable Internet-access network, we have studied the Wireless Internet-access Mesh NETwork (WIMNET) that is composed of multiple access points (APs). WIMNET utilizes multi-hop communications between APs to provide access to the Internet through a gateway (GW) from associated hosts, which becomes increasingly vulnerable to problems of the available bandwidth...
The implementation of wind turbines lagged state-of-the-art control capabilities for many years. This paper describes a control system for wind turbines which incorporates the major control elements for running a wind turbine as well as ensuring that energy from the inverters is injected into the electricity network at maximum efficiency. The paper critically analyses the functional improvements and...
the live demonstration shows the prototype of image recombination and processing system for one-dimensional multi-strip CMOS image sensors (CISs.) The proposed final system is discussed in the main paper, which takes advantage of the satellites' linear moving property to control the exposure time of CIS and provides the real-time ability to generate 11,200 × N high-resolution image for satellites'...
Application of the Analog Chirp Fourier Transform (ACFT) in generating low-latency, continuous, real-time frequency spectra of wide bandwidth radio frequeny (RF) signals is presented as an alternative to the digital FFT processor. Insights into the mathematical construct of ACFT, system modeling, and practical design considerations are presented. Resolution and worst-case frequency error are key metrics...
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