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  • Статистическая модель прогнозного профиля рельефа местности в задаче выполнения маловысотного полета воздушного судна по цифровой карте высот

Article

Статистическая модель прогнозного профиля рельефа местности в задаче выполнения маловысотного полета воздушного судна по цифровой карте высот

Труды МАИ. 2014. № 76. С. 14-29.
Ямпольский С. М., Наумов А. И., Кичигин Е. К., Рубинов В. И., Мох А. М.

The research is to develop tabular-analytical and tabular-approximating methods of altitude evaluation statistics calculations according to a digital height map. The subject matter is the comparative evaluation of the relief height statistics calculations methods. The analysis of mathematical expectation and height dispersion method errors by means of tabular-approximating method is provided. The aim is to increase the accuracy of flight altitude evaluation according to a digital height map while counting prognostic flight path by means of on-board inertial navigation system. As a result of a numerical experiment using the tabular-analytical method the following boundary values of errors are defined: the maximum error of mathematical expectation does not exceed 0,3 meters for a mathematical expectation evaluation and 0,25 meters for root-mean-square deviation of relief height evaluation. The research results allow recommending the tabular- approximating method for practical use during low-altitude aircraft flight echelon formation. Also it is necessary to pointout the fact that the needed computing resources do not depend on planned coordinates errors during a fixed flight time.