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Journal Radioengineering №7 for 2013 г.

Article in number:

The analysis of errors of high-precision maintenance of antiaircraft missile on the basis of the thermovision image of a torch of the mid-flight engine

Keywords:
high-precision maintenance
errors of determination of coordinates of a trajectory
thermovision image

Authors:

A.A. Dontsov, Yu.L. Koziratsky, D.V. Prokhorov, A.V. Kusakin

Abstract:

For an assessment of possibility of high-precision maintenance of the antiaircraft missile according to the image of a torch of the mid-flight engine, formed the matrix photointake, developed analytical a method of calculation of errors of determination of coordinates of a trajectory of the rocket. When developing a technique basic provisions of the theory of errors of measurements are used and errors of determination of coordinates of a trajectory of the aircraft on which means of maintenance, the angular provision of the gyrostabilized platform with a matrix photointake, the accuracy of determination of coordinates of the center of the image of a torch of the mid-flight engine, and also an error of determination of range to the attacking rocket is placed are considered.
It is shown that total RMSD of an error of determination of spatial coordinates of the rocket according to the thermovision image of a torch of the mid-flight engine significantly depends on the accuracy of determination of coordinates of the aircraft. So, at RMSD of an error of determination of coordinates of the aircraft 5...10 m of RMSD of an error of determination of spatial coordinates of missile can make 10...23 m at ranges from 1000 meters to 3000 m to attacking missile. At increase in RMSD of an error of determination of coordinates of the aircraft to 15...20 m of RMSD of an error of determination of coordinates of missile increase to 30 m and more.
The assessment probability of hit of laser probing radiation on optical system of guidance of the rocket is carried out at orientation of its source in the direction determined by the matrix receiver of optical radiation. It is established that high (more than 0,8) the probability of sounding of optical system of targeting of missile can be provided at ranges more than 2 km if to RMSD of errors of definition of angular provisions of the gyrostabilized platform on which the matrix receiver of optical radiation is placed, doesn't exceed 1 angular minutes. High probability of sounding at ranges 1...2 km can be provided at divergence of laser radiation of 35 angular minutes and more.

Pages: 62-66

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