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DOE OSTI · 1548320

Real-time Signal Processing for Sounding Rocket Modal Frequency Estimation

Candy, J. V.·Illingworth, B. R.·Craft, K. W.·Case, J. E.
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Abstract

Signal processing for sounding rocket flights requires not only sophisticated high spectral resolution processing, but also the capability of real-time application. In this report we discuss the possibility of techniques that can be applied to solve this challenging problem in the case of noisy, uncertain accelerometer measurements. The approach involves the selection of methods capable of producing reliable spectral estimates corresponding to the modal frequencies of a vibrating structure. Here four approaches that offer the required high resolution sophistication and potential for real-time application are investigated: the so-called Burg lattice, maximum entropy method and two adaptive methods employing the well-known Widrow instantaneous gradient techniques.

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Candy, J. V., Illingworth, B. R., Craft, K. W., Case, J. E.. 2019-03-06. Real-time Signal Processing for Sounding Rocket Modal Frequency Estimation. https://doi.org/10.2172/1548320

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