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Angle-of-arrival fluctuations in a turbulent atmosphere
The Journal of the Acoustical Society of AmericaAtmospheric turbulence causes fluctuations in the angle-of-arrival (AOA) of sound waves. These fluctuations adversely affect the performance of sensor arrays used for source detection, ranging, and recognition. This article examines, from a theoretical perspective, the variance of the AOA fluctuations measured with two microphones.
Vladimir E. Ostashev +6 more
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Comparison of two angle of arrival averaging strategies
2009 Canadian Conference on Electrical and Computer Engineering, 2009The accuracy of direction finding (DF) systems can often be improved by using techniques for the time averaging of information from multiple data records, particularly when the signal-to-noise ratio is low. In certain DF systems, the emitter angle of arrival (AOA) is computed from the phase angle of a complex-valued signal. For this type of DF systems,
Sichun Wang +3 more
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2004
The angle of arrival (AOA) is the most valuable piece of information that can be obtained from an enemy radar because the radar cannot change its position drastically in a very short time frame (i.e., a few milliseconds). Unfortunately AOA information is also the most difficult information to obtain. It requires several antennas with receivers. The two
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The angle of arrival (AOA) is the most valuable piece of information that can be obtained from an enemy radar because the radar cannot change its position drastically in a very short time frame (i.e., a few milliseconds). Unfortunately AOA information is also the most difficult information to obtain. It requires several antennas with receivers. The two
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Angle of Arrival Localization for Wireless Sensor Networks
2006 3rd Annual IEEE Communications Society on Sensor and Ad Hoc Communications and Networks, 2006Awareness of the physical location for each node is required by many wireless sensor network applications. The discovery of the position can be realized utilizing range measurements including received signal strength, time of arrival, time difference of arrival and angle of arrival.
Rong Peng, Mihail L. Sichitiu
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Measurement of Angle-of-Arrival
1969While a large number of different types of direction-finder for obtaining the bearings of radio signals have been developed, ranging from simple vertical loop antennas to very complicated systems such as the Wullenweber type in which a narrow beam is used to scan the incoming wave system, very few of them can be applied to the problem of measuring ...
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On the dimensionality of spatial fields with restricted angle of arrival
Proceedings. International Symposium on Information Theory, 2005. ISIT 2005., 2005Wireless communication occurs through continuous fields, over regions of space. Although the communication channel may be modelled in terms of infinite dimensional vector spaces, it is paramount to develop finite dimensional approximations for this channel.
Glenn Dickins +2 more
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Measurement of the Angle of Arrival of Microwaves
Proceedings of the IRE, 1946This paper describes a method of measuring the direction from which microwaves arrive at a given receiving site. Data which have been collected on two short optical paths using a wavelength of 3¼ centimeters are presented to illustrate the use of the method.
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Nature, 1953
IT has been suggested by Scott1 that uncoupled F-region Z echoes are due to longitudinally propagated waves reflected from an area near the magnetic zenith.
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IT has been suggested by Scott1 that uncoupled F-region Z echoes are due to longitudinally propagated waves reflected from an area near the magnetic zenith.
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Cooperative localization using angle-of-arrival information
11th IEEE International Conference on Control & Automation (ICCA), 2014This paper studies the cooperative localization problem of sensor networks using local angle-of-arrival measurements in two scenarios. (i) The angle-of-arrival information can be mutually measured by pairs of sensors in their local frames which do not share the same orientation; (ii) The angle-of-arrival information can not be mutually measured by ...
Jubin Zhong +3 more
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Multipath angles-of-arrival on a terrestrial microwave link
IEEE Transactions on Communications, 1990Results are presented of experimental measurements of the angle of arrival and amplitude of the individual rays in a multipath microwave propagation situation. On the basis of extensive data collected on a 31.5-km path, statistical distributions that are expected to be of assistance in the design of diversity, especially angle-diversity, microwave ...
A. R. Webster, T. S. Merritt
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