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Remote aerocraft real low altitude penetration route bumping ground probability resolution evaluation method and correction method

An aircraft and practical technology, applied in the field of analysis and calculation of the probability of collision with the ground, can solve the problems of the evaluation of the probability of collision with the ground without a track, the organic combination of track correction, mathematical modeling, etc., and achieve broad market prospects and application value Effect

Inactive Publication Date: 2008-01-09
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

Its main defect lies in the mathematical modeling of the terrain data under the actual three-dimensional flight path planning of the aircraft. Practical engineering application provides a way and method

Method used

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  • Remote aerocraft real low altitude penetration route bumping ground probability resolution evaluation method and correction method
  • Remote aerocraft real low altitude penetration route bumping ground probability resolution evaluation method and correction method
  • Remote aerocraft real low altitude penetration route bumping ground probability resolution evaluation method and correction method

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Fig. 1 is the general block diagram of the present invention, comprises the following steps:

[0024] 1) The present invention first carries out the three-dimensional track planning of the aircraft according to the combat requirements of the weapon system. The performance index includes making the range of the aircraft as short as possible, the flight altitude as low as possible, the probability of being detected by the air defense radar as low as possible, and the probability of being destroyed by the air defense missile as much as possible. Low;

[0025] 2) According to the three-dimensional track obtained by the preliminary planning of the long-range aircraft mission planning system, the corresponding actual terrain below the track is sampled;

[0026] 3) Spectrum analysis is performed on the terrain data obtained by sampling using Welch's method to o...

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Abstract

The invention is in use for guarantee safe flying of aircraft under low penetration. The method includes steps: sampling data of practical landform under flight path obtained from planning; carrying out frequency analysis for data of practical landform; establishing analytical expression of power spectrum density for practical landform; carrying out analytical calculating probability of bumping ground; modifying the planned flight path for second time. The second modification can save fuel, increase firing range, and reduce probability of bumping ground. The invention discloses important foundation for improving design of control system, optimizing flight path of low altitude flight. Thus, remote low-level aircraft can arrive target area in hidden condition to carry out reconnaissance and attack.

Description

technical field [0001] The field of the present invention is the low-altitude penetration technology of long-distance aircraft, and more specifically, in order to ensure the safe flight of the low-altitude penetration aircraft, the analysis and calculation technology of the probability of crashing into the ground and the trajectory adjustment method for actually planning the flight track. This technology can be widely used in the fields of flight path evaluation, control system design performance evaluation and other fields of various advanced aircraft in low-altitude penetration operations. Background technique [0002] For a long time, low-altitude penetration technology has been the key technology in the development of long-range aircraft weapon systems. It can ensure that the aircraft flies to the target area safely and covertly, and achieves the purpose of reconnaissance and attack. And the calculation technology of ground collision probability is one of the key technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G05D1/00
Inventor 宋建梅李侃
Owner BEIJING INSTITUTE OF TECHNOLOGYGY