Design methodology and performance analysis for a novel constant envelope modulation signal of GNSS

Author(s):  
Jian Yang ◽  
Yi-Kang Yang ◽  
Xue Li ◽  
Lei Liu
2020 ◽  
Vol 32 (3) ◽  
pp. 401-428 ◽  
Author(s):  
Aayush Singha Roy ◽  
Dipankar Bose ◽  
U.K. Bera

PurposeIn this article, we identify various foodservice-related attributes that are important for undergraduate students residing in hostels and avail service from specific foodservice providers. We also investigate the performance of attributes to determine areas where the foodservice providers should maintain a high performance or where improvement is required.Design/methodology/approachWe apply the Kano methodology to design the questionnaire for 24 different attributes. For each attribute, we construct three questions; namely, functional type, dysfunctional type, and performance of the hostel foodservice. We collect a total of 317 responses. We use multiple methods to determine the dominant category. Finally, combining the values of these methods, we study relative positions of the attributes in the importance–performance grid.FindingsBased on the Kano categorization, quality-related attributes are most important, followed by hygiene, comfort, availability, variety, and time, in the descending order. The gender of the respondent plays an important role in categorization of some attributes. Using the importance–performance analysis, we identify the attributes where the foodservice provider should maintain a high performance or where improvement is required. Improvements in some attributes are difficult due to foodservice provider's self-assessment of high performance or high difficulty for improvement.Originality/valueIn this study, we examine the importance of various foodservice attributes among undergraduate residential students. We combine multiple methods of Kano categorization to compute importance values of the attributes. We also investigate the reasons behind the gap between student's and foodservice manager's perception of the performance of these attributes.


2014 ◽  
Vol 1030-1032 ◽  
pp. 1741-1744
Author(s):  
Cheng Hong Zhou ◽  
Wei Ping Qian ◽  
Hua Zhao ◽  
Jun Hai Guo

Radar obtains motion information of target from received modulated electromagnetic waves, which is usually periodical pulses or continuous waves. In this process, noise will affect the detection performance. However, as a modulated transmitting signal, noise has incomparable advantages over traditional radar. In this article, the mechanism of noise as modulation signal is introduced, and subsequently focused on the principles of distance ranging the corresponding estimation methods are proposed. Besides, the interference resistance characters of noise radar is verified by simulation.


Vacuum ◽  
2021 ◽  
Vol 185 ◽  
pp. 110025
Author(s):  
Dantong Li ◽  
Zhilong He ◽  
Chuang Wang ◽  
Yi Guo ◽  
Wei Wei ◽  
...  

2013 ◽  
Vol 84 (12) ◽  
pp. 124704 ◽  
Author(s):  
Enrique Villa ◽  
Beatriz Aja ◽  
Jaime Cagigas ◽  
Luisa de la Fuente ◽  
Eduardo Artal

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