Method for automatically distributing accuracy indexes of ballistic missile inertia measurement system

Abstract

The invention discloses a method for automatically distributing accuracy indexes of a ballistic missile inertia measurement system. The method includes solving drop point accuracy values and drop point deviation proportions of error coefficients according to set environment function values and initial values of the inertia measurement system error coefficients, and comparing the calculated drop point accuracy values with drop point accuracy threshold values; if the calculated drop point accuracy values are smaller than the set threshold values, not needing to adjust; if not, searching to-be-adjusted error coefficients according to the drop point deviation proportions, performing proportion adjustment, solving the drop point accuracy values and the drop point deviation proportions of the error coefficients after adjustment, and repeating the steps to finally acquire inertia measurement error coefficients meeting requirements of the drop point accuracy threshold values. Compared with other inertia measurement system accuracy index methods, the method has the advantages that automatic distribution of the accuracy indexes of the inertia measurement system and optimal adjustment of the error coefficients are achieved.

Description

technical field [0001] The invention relates to the technical field of missile precision analysis, in particular to a method for automatically assigning precision indexes of a ballistic missile inertial measurement system. Background technique [0002] The tasks of the ballistic missile and launch vehicle guidance system are: to make the warhead of the missile hit the target accurately; to make the payload of the launch vehicle enter the predetermined orbit. To accomplish this mission, on the one hand, it is necessary to be sensitive and calculate the real-time flight status of the rocket; on the other hand, it is necessary to give instructions to manipulate the rocket to change its velocity vector, shut down the engine or terminate its thrust according to the regulations. To hit the target or enter the predetermined orbit requires the guidance system to complete its mission with high precision. The hit accuracy of ballistic missiles is generally expressed by circular calcu...

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Problems solved by technology

Also, there is randomness error, it's not exactly the same every test or every power up, start up

Systematic errors are usually much larger

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