4 results match your criteria: "National Digital Switching System Engineering and Technological Research Center (NDSC)[Affiliation]"
Sensors (Basel)
February 2019
National Digital Switching System Engineering and Technological Research Center (NDSC), Zhengzhou 86-450001, China.
In practical applications, the assumption of omnidirectional elements is not effective in general, which leads to the direction-dependent mutual coupling (MC). Under this condition, the performance of traditional calibration algorithms suffers. This paper proposes a new self-calibration method based on the time-frequency distributions (TFDs) in the presence of direction-dependent MC.
View Article and Find Full Text PDFEntropy (Basel)
December 2018
National Digital Switching System Engineering and Technological Research Center (NDSC), Zhengzhou 450000, Henan, China.
Deep belief networks (DBNs) of deep learning technology have been successfully used in many fields. However, the structure of a DBN is difficult to design for different datasets. Hence, a DBN structure design algorithm based on information entropy and reconstruction error is proposed.
View Article and Find Full Text PDFSensors (Basel)
November 2018
National Digital Switching System Engineering and Technological Research Center (NDSC), Zhengzhou 450002, China.
Current bias compensation methods for distributed localization consider the time difference of arrival (TDOA) and frequency difference of arrival (FDOA) measurements noise, but ignore the negative influence by the sensor location uncertainties on source localization accuracy. Therefore, a new bias compensation method for distributed localization is proposed to improve the localization accuracy in this paper. This paper derives the theoretical bias of maximum likelihood estimation when the sensor location errors and positioning measurements noise both exist.
View Article and Find Full Text PDFSensors (Basel)
June 2018
National Digital Switching System Engineering and Technological Research Center (NDSC), Zhengzhou 450000, China.
With the development of science and technology, modern communication scenarios have put forward higher requirements for passive location technology. However, current location systems still use manual scheduling methods and cannot meet the current mission-intensive and widely-distributed scenarios, resulting in inefficient task completion. To address this issue, this paper proposes a method called multi-objective, multi-constraint and improved genetic algorithm-based scheduling (MMIGAS), contributing a centralized combinatorial optimization model with multiple objectives and multiple constraints and conceiving an improved genetic algorithm.
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