Window taper functions for subaperture processing

Technical Report · Sat Nov 30 23:00:00 EST 2013

DOI:https://doi.org/10.2172/1121978· OSTI ID:1121978

Doerry, Armin Walter ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

It is well known that the spectrum of a signal can be calculated with a Discrete Fourier Transform (DFT), where best resolution is achieved by processing the entire data set. However, in some situations it is advantageous to use a staged approach, where data is first processed within subapertures, and the results are then combined and further processed to a final result. An artifact of this approach is the creation of grating lobes in the final response. The nature of the grating lobes, including their amplitude and spacing, is an artifact of window taper functions, subaperture offsets, and subaperture processing parameters. We assess these factors and exemplify their effects.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1121978
• Report Number(s): SAND2013--10619; 492708
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING