|
advertisement |
|
|
|
|
|
|
Aerospace Instrument-Making Annotation << Back
MATHEMATICAL MODEL OF A COMPUTATIONAL HYBRID INERTIAL-SATELLITE SYSTEM WITH A FUNCTION FOR ESTIMATING THE STRENGTH OF THE GRAVITATIONAL FIELD |
A.S. Devyatisilny, A.V. Shurygin
Mathematical models of an integrated inertial-satellite system are proposed that are complementary to the new methodology for assimilating heterogeneous information about the movement of an object, which is based on a numerically stable procedure for a high-precision solution of a mathematically incorrect inverse problem of multiple differentiation of data under conditions of limited accuracy of calculations and measurements. As a reference model of the geoid shape, taking into account the standards PZ-90 (Russia) and WGS-89 (USA), an ellipsoidal reference system and trajectory moving coordinate trihedrons are introduced – accompanying, geographically oriented (Darboux trihedron), and a trihedron rigidly connected to the object (freely oriented ), in the axes of which measurements are performed. Three problems are presented sequentially – trajectory, the solution of which gives estimates of the kinematic linear parameters of the object’s motion relative to the solid Earth; orientation, the solution of which is the estimates of the Euler-Krylov angles and their derivatives; mobile gravimetry, which determines the trajectory estimates of the strength of the Earth's gravitational field. Some results of computational experiments are presented that verify the initial physical and analytical concepts.
Keywords: GLONASS, hypersonic speed, star, apparent acceleration, gravitational field strength, newtonometer, pulsar, Euler-Krylov angles, trajectory.
DOI: 10.25791/aviakosmos.2.2021.1202
Pp. 12-18. |
|
|
|
Last news:
Выставки по автоматизации и электронике «ПТА-Урал 2018» и «Электроника-Урал 2018» состоятся в Екатеринбурге Открыта электронная регистрация на выставку Дефектоскопия / NDT St. Petersburg Открыта регистрация на 9-ю Международную научно-практическую конференцию «Строительство и ремонт скважин — 2018» ExpoElectronica и ElectronTechExpo 2018: рост площади экспозиции на 19% и новые формы контент-программы Тематика и состав экспозиции РЭП на выставке "ChipEXPO - 2018" |