Interpolation of Complex-Valued Response Amplitude Operators – Approaches and Effects

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Authors
  1. Thornhill, E.
Corporate Authors
Defence Research and Development Canada, Atlantic Research Centre, Halifax NS (CAN)
Abstract
Response amplitude operator (RAO) data sets are used in many applications, such as for calculating RMS ship motions in arbitrary sea conditions. In the process of performing these calculations, there can be cases where the complex-numbers of a RAO data set must be interpolated. This report presents the results of a study examining different approaches to interpolating complex RAO data, such as using its real & imaginary parts, or by using its magnitudes & phase angles. Performing interpolation at different steps within a calculation procedure for RMS motions is also examined to evaluate the effects on output.

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Keywords
Ship Motions;interpolation;Response Amplitude Operator (RAO);Complex Numbers
Report Number
DRDC-RDDC-2019-R193 — Scientific Report
Date of publication
01 Nov 2019
Number of Pages
73
DSTKIM No
CA050326
CANDIS No
811241
Format(s):
Electronic Document(PDF)

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