Results 241 to 250 of about 165,996,826 (275)

A New CLEAN Algorithm for Angle of Arrival Denoising

IEEE Antennas and Wireless Propagation Letters, 2009
In a previous work, a novel technique for angle of arrival (AOA) measurement was proposed. This technique consists of sweeping the angular domain with one antenna, step by step, such that at each measurement step the received signal voltage at the rotating antenna (sensor) is measured.
Akhdar, Oussama, Mouhamadou, Moctar, Carsenat, David, Decroze, Cyril, Monédière, Thierry   +4 more
openaire   +2 more sources

A Method of Determining the Angle of Arrival

Journal of Applied Physics, 1948
A method is presented for determining the angle of arrival of the direct and reflected wave for line of sight cases. The method assumes one direct and one reflected wave. The phase difference equipment, as developed by the Electrical Engineering Research Laboratory, measures the difference in phase at 3.2-cm wave-length between two points separated ...
A. W. Straiton, W. E. Gordon, A. H. LaGrone   +2 more
openaire   +1 more source

Angle of Arrival of Z Echoes

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.
openaire   +1 more source

Arrival angle estimation in non-Gaussian noise

Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing, 2002
This paper considers the problem of estimating the direction of arrival of plane waves from sensor array data. It is shown through a multivariate generalization of Whittle's inequality that the least squares estimator and its subspace-based approximations are inefficient when the noise distribution is non-Gaussian.
Debasis Sengupta, Sarbani Palit
openaire   +1 more source

Measurement of the Angle of Arrival of Microwaves

Proceedings of the IRE, 1946
This 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.
openaire   +1 more source

Robust Navigation Using Angle of Arrival Measurements

ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation
The majority of conventional radionavigation systems are based on Time of Arrival (TOA) measurements of RF signals. By far the most common method is pseudoranging, mainly a result of the undisputed success of Global Navigation Satellite Systems (GNSS) as a ubiquitous technology, especially in aviation.
Osechas, Okuary, Swaszek, Peter, Hartnett, Richard, Seals, Kelly, McGarry, Dahnyoung   +4 more
openaire   +1 more source

Tropospheric Effects on Angle-of-Arrival

2013
In this chapter, we characterize the effects of angle bias due to refraction and angle precision due to turbulence. As a result, angle bias due to refraction can be calibrated and removed, if possible, and any residual error can be quantified in the interferometer angle error budget.
openaire   +1 more source

Radar Angle-of-Arrival Estimation

2013
The paper focus on interferometer angle error and on the signal processing required for interferometry, but also introduce monopulse angle-of-arrival for comparison. This chapter, derive the basic equations for monopulse angle estimation and discuss the fundamentals of eigen-based superresolution techniques.
openaire   +1 more source

Arrival, Angle Of

2008
Shashi Shekhar, Hui Xiong
openaire   +1 more source

ANGLE-OF-ARRIVAL MEASUREMENTS

2013
CHAS. R. BURROWS, STEPHEN S. ATTWOOD
openaire   +1 more source