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22.482  Articles
1 of 2.249 pages  |  10  records  |  more records»
Established that, directivity diagram of the system of “basic antenna – fuselage of helicopter” becomes a function of the time due to the presence of the metal main screw, which during rotation, periodically changes geometry of aircraft body. In this case... see more

The method of automated modulation type recognition and determination of signal parameters by radiomonitoring facilities is offered in the article. The method establishes an procedure of application of the approaches to the definition of signal analytic r... see more

Background: Since tumors located in thorax region of body mainly move due to respiration, in the modern radiotherapy, there have been many attempts such as; external markers, strain gage and spirometer represent for monitoring patients’ breathing signal. ... see more

Low Frequency (LF) radio signals lie in the band 30-300 kHz. Monitoring equipment able to measure the electric strength of such signals, at field sites with very low noise levels, were designed and assembled in Italy. From 1993 onwards, the electric field... see more

Cognitive Radio Networks (CRNs) have been conceived to improve the efficiency of accessing the spectrum. However, these networks are prone to various kinds of attacks and failures that can compromise the security and performance of their users. One of the... see more

The remarkable technology for seamless integration of wireless and optical networks is radio frequency signals over Free Space Optics (FSO). This research study and simulation examine the design and evaluation performance of Radio Frequency over FSO (RF-F... see more

The study aimed to seek for the effect of meteorological parameters and conditions on wave transport for both radio wave band that used by mobile phone communication and microwave band that used in 'TV' satellites by showing which atmospheric variable and... see more

The study aimed to seek for the effect of meteorological parameters and conditions on wave transport for both radio wave band that used by mobile phone communication and microwave band that used in 'TV' satellites by showing which atmospheric variable and... see more

Modern radio engineering systems are characterized by the use of radio waves with a complex internal structure as information carriers. Such radio waves are characterized by an increased transmission spectrum width and programmed pseudo-random tuning of t... see more

1 of 2.249 pages  |  10  records  |  more records»