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Том 10, № 1 (2019)
- Год: 2019
- Статей: 6
- URL: https://bakhtiniada.ru/2075-1087/issue/view/12721
Article
SpaceNaute® the HRG Based Inertial Reference System of Ariane 6 European space launcher
Аннотация
Modular, flexible and competitive, Ariane 6 is intended to offer the best space launch solution, by 2020, to commercial and institutional customers. Therefore it can’t anymore rely on legacy inertial reference. Advanced solutions were requested through an open tender conducted by ArianeGroup under European Space Agency (ESA) supervision. SpaceNaute®, the Safran solution based of HRG technology, was then selected against RLG and FOG based solutions proposed by the competitors. This paper describes the trade-off studies conducted to select the proper technology and describe the unique SWaP (Size, Weight and Power) breakthrough of SpaceNaute®, unveils key performance characteristics of the inertial sensors for SpaceNaute® and how HRG benefits are capitalized into the product
1-6
Calibration of a Strapdown INS with an Inertial Measurement Unit Installed on Shock Absorbers
Аннотация
The influence of mobility of an inertial measurement unit (IMU) installed on shock absorbers on the accuracy of gyroscope calibration in strapdown inertial navigation systems (SINS) is discussed and the problem of its estimation considered. Based on the data obtained in calibration experiments, the IMU angular deviations are estimated using the algebraic form of the least squares method. A mathematical model of the IMU motion is constructed taking into account its relative mobility. The influence of this mobility on the calibration accuracy of gyroscopes is estimated.
7-14
Calculation of Navigation Corrections for a Single-Frequency GNSS Receiver Based on Satellite Radio Occultation Data
Аннотация
A methodology has been developed to construct SBAS ionospheric grid based on the data from ionosphere radio occultation monitoring systems such as COSMIC. This methodology facilitates calculation of vertical delay of GNSS signals on frequency L1 for any geographical location. The corrections are used by a single-frequency receiver for improving the accuracy of position estimation in solving the navigation problem. Using the combination of ionosphere model and the data from radio occultation monitoring systems, it is possible to form real-time corrections on a global scale, and to make their short-term forecasts. The proposed method testing results showed good conformance with the data from vertical sounding stations, and the magnitudes of vertical delays of signal on frequency L1, represented by EGNOS system as differential corrections.
15-20
Using the Method of S-approximations to Determine Deflections of the Vertical and Geoid Heights
Аннотация
A modified method for S-approximations of anomalous potential fields is described; its advantages are discussed. Software has been developed to calculate deflections of the vertical (DOV) and geoid heights using the proposed technique. The results of DOV calculations for two regions of the Atlantic Ocean are given.
21-26
Solving the Nonlinear Problems of Estimation for Navigation Data Processing Using Continuous-Time Particle Filter
Аннотация
A new continuous-time particle filter algorithm is proposed for solving the problems of nonlinear estimation of signal when describing the mathematical models of an observed object and a measuring system by means of stochastic differential equations. This algorithm can be used in the estimation problems related to navigation data processing. The algorithm verification is presented by example of a navigation system error estimation using geophysical field map data.
27-34
Russia’s First Integrated Navigation Systems for Commercial Vessels
Аннотация
The paper is dedicated to the history of Russia’s first integrated navigation systems (INS) Briz-N and Biryuza-NK developed for the vessels of the USSR Ministry of the Maritime Fleet (MMF). Composition of these systems, as well as the list of the main tasks and testing results are presented in the paper.
35-40