Model of real time biomedical signal transmission using wavelet based adaptive thresholding

2017 ◽  
Author(s):  
Alekhya Ghosh ◽  
Rohan Basu Roy ◽  
Soham Bhattacharyya ◽  
Arani Roy ◽  
Mrinal K. Naskar ◽  
...  
Keyword(s):  
Real Time ◽  
Signal Transmission ◽  
Adaptive Thresholding ◽  
Biomedical Signal

Measurement of frequency characteristics of disturbance torque in the process of satellite antenna rotation

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1563-1569
Author(s):  
Bo Gao ◽  
Minglong Xu
Keyword(s):  
Real Time ◽  
Signal Transmission ◽  
Frequency Characteristics ◽  
Structural Vibration ◽  
Driving Mechanism ◽  
Satellite Antenna ◽  
Satellite Applications ◽  
Study Characteristics ◽  
Satellite Signal ◽  
Disturbance Torque

As an important equipment for satellite signal reception and transmission, the satellite antenna needs to be rotated in real time to achieve real-time tracking of the target and complete signal transmission during applications. Antenna driving mechanism is generally composed of motor and other components, which will cause some structural vibration during rotation. For high-stability satellite applications, the vibration disturbance torque is a major factor affecting the satellite stability. In order to study characteristics of the disturbance torque, the disturbance data from the antenna under different rotation conditions should be measured. In this paper, the frequency characteristics of disturbance torque of a rotating satellite antenna using stepper motor as driving motor is tested and discussed.

Adaptive thresholding and windowing in real-time multispectral correlation

1992 ◽  
Author(s):  
Gary V. Stephenson ◽  
John J. Winterberg ◽  
Bart A. Bartel ◽  
Richard L. Hedden
Keyword(s):  
Real Time ◽  
Adaptive Thresholding

scholarly journals Real-time experimental demonstration of
low-cost VCSEL intensity-modulated 1125Gb/s optical OFDM signal transmission over 25km PON systems

2011 ◽  
Vol 19 (4) ◽  
pp. 2979 ◽  
Author(s):  
E. Hugues-Salas ◽  
R.P. Giddings ◽  
X.Q. Jin ◽  
J. L. Wei ◽  
X. Zheng ◽  
...  
Keyword(s):  
Real Time ◽  
Low Cost ◽  
Signal Transmission ◽  
Experimental Demonstration ◽  
Intensity Modulated ◽  
Ofdm Signal ◽  
Optical Ofdm

Asynchronous Hard Real Time Signals Transmission in Embedded Networks

2014 ◽  
Vol 5 (4) ◽  
pp. 24-44 ◽  
Author(s):  
Liudmila Koblyakova ◽  
Yuriy Sheynin ◽  
Elena Suvorova
Keyword(s):  
Real Time ◽  
Signal Transmission ◽  
Aerospace Industry ◽  
Propagation Mechanism ◽  
Time Code ◽  
Embedded Networks ◽  
Control Information ◽  
Performance Requirements ◽  
Time Signals ◽  
Hard Real Time

Nowadays in the aerospace industry the router-based onboard embedded networks gradually replacing bus-based networks because they are already not satisfy the aerospace performance requirements. The SpaceWire, GigaSpaceWire and SpaceFibre standards are developing to meet the increasing aerospace requirements. The important requirement for any aerospace embedded onboard network is a transmission of control information and system signals in hard real time. These signals can be synchronous and asynchronous, periodic and aperiodic, with or without acknowledges. The distributed interrupt mechanism is used for asynchronous signal transmission and it is included into the second edition of SpaceWire standard. The Time-code propagation mechanism is used for synchronous signal transmission in SpaceWire. The broadcast messages mechanism is used for transmission of different system signal in SpaceFibre but it does not quite meet the requirements of hard real time. In this paper the authors consider the asynchronous signals transmission with and without acknowledges. The aims of this paper are following: 1) theoretically investigate the distributed interrupt mechanism; 2) to prove its properties; 3) to specify parameters and limitations; 4) to derive the time characteristics. For these purpose the authors developed the analytical model which describe the distributed interrupt propagation mechanism in terms of the graph theory.

Application Research of Intelligent Monitoring System Based on Abnormal Events

2015 ◽  
Vol 713-715 ◽  
pp. 471-474 ◽  
Author(s):  
Shuo Mei Wu ◽  
Jian Wei Song ◽  
Xu Ning Liu
Keyword(s):  
Real Time ◽  
Video Compression ◽  
Video Surveillance ◽  
New Technologies ◽  
Signal Transmission ◽  
Mobile Video ◽  
Information Industry ◽  
Application Research ◽  
Intelligent Monitoring ◽  
Smart Cameras

In order to meet the needs of the construction information industry base, enhance their ability to serve the community, and improve scientific research projects of market-oriented level, then develop family-oriented and school-based intelligent monitoring software system, the development of new products in the smart camera and mobile video surveillance and development of new technologies are developed. It is considered that the electronic information industry needs to develop intelligent monitoring technology industry, the video compression technology and the use of mobile and existing wireless networks are made, such as efforts are used to complete the smart cameras and mobile video surveillance system development, so the development of application research has implemented the front of video surveillance intelligence information collection, transmission of video signals in real time, real-time wireless video signal transmission and other tasks.

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