Now showing items 51-60 of 1019
Design of control electronics for the Ram Energy Distribution Detector
(Virginia Tech, 2015-09-03)
The bulk motion of the neutral gas at altitudes between about 200 and 600 km is an important factor in predicting the onset of plasma instabilities that are known to distort and/or disrupt high frequency radio communications. ...
Dual channel bidirectional wavelength division multiplexing datalink
(Virginia Tech, 1988-06-05)
Wavelength division multiplexing two channels on one fiber is one approach that enables us to make use of the extremely large bandwidth of optical fibers. We start with an analysis of optical fibers, sources, detectors, ...
Ultra Low Power Wake-up Receiver with Unique Node Addressing for Wireless Sensor Nodes
(Virginia Tech, 2011-12-06)
Power consumption and battery life are of critical importance for medical implant devices. For this reason, devices for Wireless Body Area Network (WBAN) applications must consume very little power. To save power, it is ...
Temporal Frame Difference Using Averaging Filter for Maritime Surveillance
(Virginia Tech, 2015-09-04)
Video surveillance is an active research area in Computer Vision and Machine Learning. It received a lot of attention in the last few decades. Maritime surveillance is the act of effective detection/recognition of all ...
Swept Neutral Pressure Instrument (SNeuPI): Investigating Gravity Waves In The Ionosphere
(Virginia Tech, 2015-09-08)
A swept neutral pressure instrument(SNeuPI) is used to study the effect of gravity waves on the composition of the ionosphere. When mounted on a nanosatellite in the low earth orbit, changes in atmospheric pressure due to ...
Microprocessor-based soft variable structure control for D.C. motor speed regulation
(Virginia Polytechnic Institute and State University, 1985)
Second-order Cyclostationary Feature Based Detection of WiMAX Signals in Pulsed Noise Environments
(Virginia Tech, 2013-12-05)
Spectral coexistence and cooperative spectrum sharing techniques are vital to the continued development and proliferation of wireless communications systems. Government directives indicate that certain frequency bands which ...
Design of a Resonant Snubber Inverter for Photovoltaic Inverter Systems
(Virginia Tech, 2014-05-06)
With the rise in demand for renewable energy sources, photovoltaics have become increasingly popular as a means of reducing household dependence on the utility grid for power. But solar panels generate dc electricity, a ...
Error-rates of digital signaling with coherent and noncoherent detections
(Virginia Polytechnic Institute, 1968)