Abstract
In researching the disturbance of atmospheric turbulence in the infrared attitude measurement, a compensation model for atmospheric turbulence interference with missile-borne infrared radiation is established, which improves the solution accuracy of infrared attitude measurement method. Firstly, the influence of aerodynamic turbulence on the infrared radiation transmission direction received by the missile-borne infrared sensors is analysed. Meanwhile, a model of infrared radiation propagation path under the influence of turbulence is established. Then, the infrared radiation weakening degree received by infrared sensors is calculated, and the infrared radiation compensation model is designed with the earth infrared radiation model. Finally, through the curve fitting and derivation, the calculation formula of attitude angle compensation under the influence of atmospheric turbulence is established. The results from the experiments show that the roll angle calculation error is within ±1 degree, the ability of the anti-aerodynamic turbulence interference is improved and the problem of low accuracy of infrared radiation attitude measurement is solved.
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