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The objective of this work is the design of virtual instrument software system based on state machine. Through the introduction of the basic principles of it, state machine described in detail the working mechanism and its implementation in LabVIEW, combined with the a test system. With the development of practice, for the multi-state system, the nested state machine design-type thinking. Practice...
In order to solve the feature reconstruction problem of fMRI time series, hierarchical fast clustering method (HFCM) is proposed. The reconstruction of features can be thought as finding the task-related region of interest (ROI) in the human brain fMRI in order to eliminate information redundary. HFCM takes advantage of optimizing the hierarchical structure and tuning weights of different kind of...
Nowadays, observing target echo is becoming a very important way of detecting target. Among various kinds of characteristics about target echo to be measured, target strength can be got easily. In this paper, we introduce a model building of detecting the strength of target echo: segment the target surface into a lot of surface elements and then integral about them. With this model, we can calculate...
Synchronization is key technology of OFDM system. SC algorithm adopts training sequence presented by Schmidl and Cox. It's estimation of timing and frequency offset is more precise. But SC algorithm has platform when estimating the timing. In this paper, a novel method is presented aimed to solve SC's platform problem. A PN are used to scramble the training sequence in transmitter. In the receiver,...
In this paper, the detection performance of OSGO and OSSO CFAR detectors embedded in heavy-tailed Pearson distributed clutter is analyzed. We derive the closed mathematic form expressions of probability of false alarm rate and detection probability of the two CFAR schemes. While the processing speed of OSGO and OSSO CFAR is two times of that of OS CFAR, simulation results indicate that OSGO CFAR detector's...
For two integers s ges 0 and t ges 0, G is (s,t)-supereulerian, if for every two disjoint edge-sets X sub E(G) and Y sub E(G), with |X| les s and |Y| les t, G has a spanning eulerian subgraph H with X sub E(H) and Y cap E(H) = 0. Clearly, G is supereulerian if and only if G is (0,0)-supereulerian. Here it is proved that if G is a (2 + t)-edge-connected triangle-free simple graph on n vertices with...
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