Application of digital signal processing methods for the diagnosis of respiration disorders during sleep with the use of plethysmographic wave analysis

2004 ◽  
Author(s):  
Grzegorz J. Hatlinski ◽  
Witold Kornacki ◽  
Andrzej Kukwa ◽  
Bozena Dobrowiecka ◽  
Marek Pikiel
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Digital Signal ◽  
Wave Analysis ◽  
Respiration Disorders ◽  
Processing Methods ◽  
Signal Processing Methods

scholarly journals Digital Signal Processing Applied to the Modernization Of Polish Navy Sonars

2014 ◽  
Vol 21 (2) ◽  
pp. 65-75 ◽  
Author(s):  
Jacek Marszal
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Digital Signal ◽  
Electronic Systems ◽  
Ultrasound Transducers ◽  
Processing Methods ◽  
Complete Replacement ◽  
University Of Technology ◽  
Sonar Systems ◽  
Signal Processing Methods

AbstractThe article presents the equipment and digital signal processing methods used for modernizing the Polish Navy’s sonars. With the rapid advancement of electronic technologies and digital signal processing methods, electronic systems, including sonars, become obsolete very quickly. In the late 1990s a team of researchers of the Department of Marine Electronics Systems, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, began work on modernizing existing sonar systems for the Polish Navy. As part of the effort, a methodology of sonar modernization was implemented involving a complete replacement of existing electronic components with newly designed ones by using bespoke systems and methods of digital signal processing. Large and expensive systems of ultrasound transducers and their dipping and stabilisation systems underwent necessary repairs but were otherwise left unchanged. As a result, between 2001 and 2014 the Gdansk University of Technology helped to modernize 30 sonars of different types.

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