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In order to extract the horizontal synchronization information of stochastic video signal and reconstruct video image stably and automatically, the computer video signal captured from the video cable will be analyzed and the method of correlation of stochastic video signal is put forward in this paper. Without synchronization information and resolution information of the monitors, the video images...
As the radio communications technology widely used, wireless location technology plays a more important role in maintaining the order of the air waves. However concretely effective symbol calibration method with regard to Chinese DTMB signal of different frame mode is quite under research due to the multiple structure of DTMB signal. In this paper, we propose a Time Difference of Arrival(TDOA)- based...
Monitoring pregnancy using noninvasive recordings of uterine contractions is still an unsolved issue. Here, we propose a new way to tackle this problem using the electrohysterographic (EHG) signals recorded during pregnancy and labor. The new approach is based on the analysis of the propagation of the uterine electrical activity. The proposed pipeline includes i) the computation of the statistical...
Illegal logging is in these days widespread problem. In this paper we propose the system based on principles of WSN for monitoring the forest. Acoustic signal processing and evaluation system described in this paper is dealing with the detection of chainsaw sound with autocorrelation method. This work is describing first steps in building the integrated system.
By the method of synchronization coefficient, using the indicator of slaughtered fattened hogs, this paper makes a calculation on the synchronization of hogs production fluctuation in China and its regions from 1980 to 2008. The results show that: (1) the mean value of synchronization coefficient between regions and the whole nation is 0.8988. And the synchronization coefficient of the central south...
Due to the large amount of different new applications based on GNSS systems, the issue of interference monitoring is becoming an increasing concern in the satellite navigation community. Threats for GNSS can be classified as unintentional interference, jamming and spoofing. Among them, spoofing is more deceitful because the target receiver might not be able to detect the attack and consequently generate...
Botnets with the centralized architecture provide a simple, low-latency, anonymous and efficient real-time communication platform for the botnet controllers. To our knowledge, most of the latest detected large-scale botnets are based on the centralized structure with HTTP or customized protocols. Therefore, centralized botnets detection helps greatly improve control of unwanted traffic. The main contribution...
The importance of having phasor measurement units or PMUs in an electric grid is widely recognized. However, the number of PMUs on a large system is limited by cost and the placement of PMUs must be addressed. The main objective of this research is to create an algorithm to identify buses that are the best candidates for PMU placement based on certain requirements. The monitoring of certain grid events...
Correspondence analysis (CA) has recently been proposed as a superior alternative to PCA for the tasks of monitoring and early event detection. Some of the key merits of CA include improved discrimination due to the inherent nonlinear scaling as well as the ability to capture and elegantly represent the joint variable-sample associations, which make it amenable to accommodate serial correlations in...
A high bandwidth critical path monitor (1 sample/ cycle at 4-5 GHz) capable of providing real-time timing margin information to a variable voltage/frequency scaling control loop is described. The critical path monitor tracks the critical path delay to within 1 FO2 inverter delay with a standard deviation less than 3 FO2 delays over process, voltage, temperature, and workload. The CPM is sensitive...
In the Northern part of the Netherlands ASTRON is building the largest radio telescope in the world for low frequencies. The telescope is based on phased array principles and is known as the LOw Frequency ARray (LOFAR). LOFAR is optimized for detecting astronomical signals in the 30-80 MHz and 120-240 MHz frequency window. LOFAR detects the incoming radio signals by using an array of simple omni-directional...
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