Method for determining anti-interference attitude in multi-source interference environment, and test platform

Abstract

The invention relates to a method for determining the anti-interference attitude in multi-source interference environment, and a test platform. The platform comprises a test master control module, an attitude control module, an actuating mechanism simulator, a real-time simulation target machine, a triaxial rate turntable, a sensor module, an attitude determination module and an interference injection module; the test plate is a generalized test platform, can complete injection of different types of interference noises through the interference injection module, and can select an attitude determination algorithm class in the attitude determination module to complete comparison analysis of the attitude determination algorithm filtering performances of different types of anti-interference attitudes; and the anti-interference attitude determination method can effectively solve the problem of attitude determination precision decrease caused by gyroscope first-order Markov noises, carrier vibration harmonic noises, Gaussian white noises and other multi-source noises of sensor modules; and the method and the test platform are suitable for ground simulation verification in the aviation and aerospace fields, and can be used in highly precise attitude and position measurement of a spacecraft attitude determination system.

Description

technical field [0001] The invention relates to a method for determining an anti-interference attitude in a multi-source interference environment, a test platform and a test method. The platform involved is a generalized test platform that can provide different types of interference and can provide different types of anti-interference attitudes. The determination method provides a platform for test comparison and analysis; the anti-jamming attitude determination method involved can compensate and suppress the multi-source interference suffered by the spacecraft attitude determination system, and can effectively improve the attitude determination accuracy. The invention belongs to the field of high-precision attitude determination of spacecraft. Background technique [0002] Spacecraft such as satellites and space shuttles need to know accurate attitude information during the entire mission cycle, and then they can complete high-precision attitude control, so that they can su...

AI Technical Summary

Problems solved by technology

When the spacecraft system is only affected by Gaussian white noise, the Kalman filter can effectively complete the goal of attitude determination, but the harsh working environment of the spacecraft system will cause the spacecraft system to be subject to external disturbances from multiple sources, which will make the attitude determination system sensitive. The accuracy of the Kalman filter will be greatly affected, and even cause divergence, which will greatly affect the normal operation of the attitude determination system, and even affect the working life of the entire spacecraft.

Patent ZL200910086896.9 proposes a composite layered anti-jamming filter, which theoretically carries out filtering theory research on multi-source interference systems, but there are nonlinear items that cannot be discretized, and the researched algorithm cannot be used in engineering. In addition, for The processing of interference is only classified into external model, random interference, energy bounded interference, etc. from the perspective of theoretical analysis, and does not include the actual interference of first-order Markov noise, Gaussian white noise and carrier vibration harmonics that exist in the actual sensor system. Noise and other actual system noise, the patent only uses interference compensation for a type of external model interference, and the rest directly uses robust H ∞ The cost-guaranteed filter is directly suppressed, ignoring the compensability of the remaining part of the noise from the root cause, and failing to know the interference and prescribing the right medicine, and will lose part of the filtering accuracy from the root cause;

[0003] Attitude control system test platforms have been widely used in the development of spacecraft. Many institutions at home and abroad have developed attitude control system test platforms. However, the existing attitude control systems are usually developed for spacecraft of specific mission types. There is no test platform dedicated to research on the performance of the attitude determination system method, let alone the test, analysis and evaluation of the anti-jamming attitude determination method in a multi-source interference environment

Both patents 201610196202.7 and 201610195891.X initially proposed to build a test platform for the attitude determination system, but the common problem is that in addition to the measurement noise brought by the sensor itself, it is impossible to simulate the vibration caused by the external carrier environment. Influenced by the impact of the attitude determination system, it is impossible to fully simulate the noise suffered by the attitude determination system. In addition, when the patent conducts a comparison and analysis of multiple types of attitude determination algorithms, only one type of method can be verified during a boot process, and the attitude determination method cannot be switched online, nor can it be performed online. Transmission and storage of test data and test comparative analysis

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