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A constant modulus algorithm-(CMA) based carrier frequency offset estimation method for coherent optical orthogonal frequency division multiplexing (CO-OFDM) system is proposed. Theoretical analysis and simulation results indicate that the frequency offset estimation range of the proposed algorithm can achieve [−5.9, +5.9] GHz, and the mean normalized estimation error can be kept under 0.001 even...
This research explored the effect of different presentation orders on processing time and time estimation, from the perspective of verbal working memory dual-task mode task. 108 participants took part in memorizing order or disorder French word, it showed that the presentation order significantly shortens the processing time and estimation time, thus it proved that the orderly presentation can enhance...
Accurate estimation of SOC is the crucial factor to ensure safe operation of a battery. Current estimation methods are derived based on electric equivalent circuit models that do not take into account dependences of SOC on lithium concentrations, temperature, and other electrochemical phenomena. A new model for a Li-polymer battery was developed based on a 1D electrochemical microcell model. This...
In automatic target recognition (ATR), correlation filters are widely used to detect target signature variations. In this paper we concentrate on a particular case: target pose angle. For the traditional maximum average correlation height (MACH) filter method, only a few special angles can be used due to the limitation of the training data and the requirement on efficiency for real-time applications...
Many estimators and filters provide assessments (e.g., MSE matrices) of their own estimation errors. They are, however, obtained based on simplifying assumptions that are not necessarily valid. Then the questions are: Are these self-assessments trustable? How trustable are they? We referred to these problems as the credibility of the estimators/filters. Solid technical answers to the first question...
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