Results 271 to 280 of about 16,431,976 (329)
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Direction finding in the presence of an intermittent interference
IEEE Transactions on Signal Processing, 2002We consider the problem of estimating the direction of arrival (DOA) of a source in the presence of an intermittent jammer, i.e., a jammer that corrupts the signal of interest from time to time. This situation is encountered in slow frequency-hopped spread spectrum systems with partial time or partial band jamming.
Olivier Besson +2 more
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Monostatic MIMO radar direction finding in impulse noise
Digit. Signal Process., 2021Hongyuan Gao +3 more
semanticscholar +1 more source
DIRECTION FINDING OF ATMOSPHERICS
Canadian Journal of Research, 1935The results of one summer's observation with a cathode ray direction finder and an automatic recorder to locate the bearings of atmospherics are given and discussed.It appears that storm areas or areas of low barometric pressure are responsible for many of the observed atmospherics.
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1988
The purpose of a radio direction finder (df) is to measure the direction of arrival of a radio signal. Traditionally the azimuth angle of arrival, i.e., the angle of arrival in the horizontal plane, has been considered sufficient to define the ...
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The purpose of a radio direction finder (df) is to measure the direction of arrival of a radio signal. Traditionally the azimuth angle of arrival, i.e., the angle of arrival in the horizontal plane, has been considered sufficient to define the ...
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1992
This chapter discussed the direction finding antennas having two classes to distinguish this. These are (i) Terrestrial or airborne types requiring omniazimuth but limited elevation coverage (ii) Systems for tracking space vehicles and radio stars where essentially hemispherical coverage is required.
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This chapter discussed the direction finding antennas having two classes to distinguish this. These are (i) Terrestrial or airborne types requiring omniazimuth but limited elevation coverage (ii) Systems for tracking space vehicles and radio stars where essentially hemispherical coverage is required.
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Tactical Body-Worn Direction Finding
2007 IEEE International Conference on System of Systems Engineering, 2007This paper discusses the body worn antenna vest (BWAV) development efforts at Southwest Research Institute that will enable the reception and DF of both narrowband and wideband signals while allowing for hands-free operations. A BWAV was developed consisting of two nested antenna arrays covering the frequency range of 30-3000 MHz.
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Nature, 1936
IT is a regrettable fact that some of our scientific activities have required the stimulus of war to initiate them and the fear of war to keep them alive. Not the least striking example of this impingement of military necessity on scientific research is afforded by the subject of direction finding by sound. During the Great War, sound provided the only
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IT is a regrettable fact that some of our scientific activities have required the stimulus of war to initiate them and the fear of war to keep them alive. Not the least striking example of this impingement of military necessity on scientific research is afforded by the subject of direction finding by sound. During the Great War, sound provided the only
openaire +1 more source
Current treatment and future directions in the management of anal cancer
Ca-A Cancer Journal for Clinicians, 2022Lisa A Kachnic +2 more
exaly
Circulating tumor DNA in advanced solid tumors: Clinical relevance and future directions
Ca-A Cancer Journal for Clinicians, 2021Heather Parsons +2 more
exaly