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Title: Two-dimensional direction-of-arrival estimation with time-modulated arrays
Author: Clark, Ben
ISNI:       0000 0004 7970 8545
Awarding Body: Loughborough University
Current Institution: Loughborough University
Date of Award: 2019
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In this thesis, the use of time-modulated arrays are considered for two dimensional direction finding systems. The work has a particular aim of providing a low cost solution with small computational overhead. A solution is provided for the one-dimensional case before it is extended to work in two dimensions, whilst new techniques are considered for the control of the array. The work focuses on utilising the simultaneously generated sidebands caused by switching the elements of the array to obtain a direction estimate and this is achieved using the power spectrum of the array's output. The use of real-valued arithmetic delivers the low-computational requirement, whilst the use of switches to implement time-modulation delivers the low cost requirement. Methods for the control and manipulation of these simultaneous beams are also given, as are the considerations needed for implementing such an array. These techniques are derived theoretically using array equations but confirmed experimentally by utilising a novel, fully featured simulation of a time-modulated planar array with customisable properties.
Supervisor: Not available Sponsor: Loughborough University
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
Keywords: Mechanical Engineering not elsewhere classified ; Direction-of-arrival estimation ; Arrays ; Time modulation