Wind Gust Models Derived From Field Data

Details Wind Gust Models Derived From Field Data Wind Gust Models Derived From Field Data

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995tdapr.123...30g&link_type=abstract

The Telecommunications and Data Acquisition Progress Report, TDA PR 42-123, July-September 1995, pp. 30-36

Physics

Scientific paper

Wind data measured during a field experiment were used to verify the analytical model of wind gusts. Good coincidence was observed; the only discrepancy occurred for the azimuth error in the front and back winds, where the simulated errors were smaller than the measured ones. This happened because of the assumption of the spatial coherence of the wind gust model, which generated a symmetric antenna load and, in consequence, a low azimuth servo error. This result indicates a need for upgrading the wind gust model to a spatially incoherent one that will reject the real gusts in a more accurate manner. In order to design a controller with wind disturbance rejection properties, the wind disturbance should be known at the input to the antenna rate loop model. The second task, therefore, consists of developing a digital filter that simulates the wind gusts at the antenna rate input. This filter matches the spectrum of the measured servo errors. In this scenario, the wind gusts are generated by introducing white noise to the filter input.

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