метод найменших квадратів

The evidence to support feasibility of using minimax approximation to calculate the parameters of thermistors’ thermometric characteristic models has been provided. Minimax approximation ensures the achievement of the minimum possible calibration error, while the least squares method minimizes the sum of squared errors. A rational expression has been proposed to describe the dependence of temperature on thermistor’s resistance. The effectiveness of the model in the form of a rational expression is illustrated with actual calibration results.

The problems of reliability of results of processing of geodetic data by finite element method are analyzed. Some optimized solutions and prospects of the method are disclosed.

Knowledge of the gravity field takes significance place in today's world. Such information is very important for performing of a number of contemporary problems related to satellite technologies. Such problems include: the launch of launch vehicles, satellites orbit prediction, the study of the surface of the oceans, transformation of normal and geodetic heights and more.