Grating Lobes and Spatial Aliasing in Sparse Array Beampatterns

Metadata Updated: July 29, 2022

Calculated beam pattern in Fourier space of a unitary input given two sparsely sampled synthetic aperture arrays: 1. a regularly spaced array sampled at 2*lambda, where lambda is the wavelength of the 40 GHz signal, and 2. the regularly spaced array with random perturbations (of order ~<lambda) to the (x,y) spatial location of each sample point. This dataset is published in "An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures" by Vouras, et al. in IEEE Selected Topics in Signal Processing Recent Advances in Wideband Signal Processing for Classical and Quantum Synthetic Apertures.

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Public: This dataset is intended for public access and use. License: See this page for license information.

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Matlab function to compute 2D FFTMatlab function
Matlab function to compute the two-dimensional spatial Fast Fourier Transform...

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Matlab code to recreate Fig. 20Matlab script
Matlab script will generate the exact data provided in...

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Dataset use, references, and contact informationplain text
"Readme" file provided additional information relating to "Grating Lobes and...

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Data to generate Fig. 20: Grating Lobes Due to...Organized with x data given in the first column and, for line plots, y data given in subsequent columns or, for surface plots, y data given in the second column and z or color data given in the third column. Column headers define each axis with units reported as "_units".
Sparsely sampled lattices on a regular grid introduce grating lobes in the...

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Data to generate Fig. 21: Sparse Array Before...Organized with x data given in the first column and, for line plots, y data given in subsequent columns or, for surface plots, y data given in the second column and z or color data given in the third column. Column headers define each axis with units reported as "_units".
A simple approach for mitigating grating lobes in a sparse lattice is to...

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Data to generate Fig. 22: Optimized Sparse...Organized with x data given in the first column and, for line plots, y data given in subsequent columns or, for surface plots, y data given in the second column and z or color data given in the third column. Column headers define each axis with units reported as "_units".
Periodicity in the beam pattern, here calculated and reported in Fourier...

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Dates

Metadata Created Date	July 29, 2022
Metadata Updated Date	July 29, 2022
Data Update Frequency	irregular

Metadata Source

Data.json Data.json Metadata
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Harvested from NIST

Additional Metadata

Resource Type	Dataset
Metadata Created Date	July 29, 2022
Metadata Updated Date	July 29, 2022
Publisher	National Institute of Standards and Technology
Maintainer	Mohamed Hany
Identifier	ark:/88434/mds2-2595
Language	en
Data Last Modified	2022-03-31 00:00:00
Category	Advanced Communications:Wireless (RF)
Public Access Level	public
Data Update Frequency	irregular
Bureau Code	006:55
Metadata Context	https://project-open-data.cio.gov/v1.1/schema/data.json
Schema Version	https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby	https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id	9092350e-9746-46aa-838b-d9e826c6b0fc
Harvest Source Id	74e175d9-66b3-4323-ac98-e2a90eeb93c0
Harvest Source Title	NIST
Homepage URL	https://data.nist.gov/od/id/mds2-2595
License	https://www.nist.gov/open/license
Program Code	006:045
Source Datajson Identifier	True
Source Hash	6386ea98c7c4853c168e2197a10a326a4fe4b974
Source Schema Version	1.1

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