Outer ballistic interruption point correction method based on telemetering apparent acceleration

Abstract

The invention discloses an outer ballistic interruption point correction method based on telemetering apparent acceleration, and the judgment method comprises the following steps: (1) remote time alignment, (2) alignment of telemetering data to outer measurement data, (3) calculation of the components of gravitational acceleration in the radial direction and the earth rotation direction, (4) calculation of the gravitational acceleration of a space target point, (5) calculation of the projection of the earth rotation angular velocity on each axis of the emission coordinate system; and (6) correction of the position of the interruption point. According to the rocket attitude angle condition judgment method based on the externally measured speed, based on the basic ideas of remote and external fusion and internal and external complementation, the externally measured acceleration is calculated by using the telemetering apparent acceleration, and the trajectory information of the interruption point is corrected by using the basic principle of kinematics.

Description

technical field [0001] The invention relates to the technical field of aerospace outer trajectory processing, in particular to a method for correcting outer trajectory interruption points based on telemetry apparent acceleration. Background technique [0002] The aerospace command center is the core hub for the interaction, processing, and forwarding of external measurement information on the ground and on-arrow telemetry information. Most importantly, its accuracy has a great impact on equipment guidance, command decision-making, and ground security control. In the future, new situations, new technologies, and new states will all put forward higher requirements for external ballistic accuracy. [0003] Due to the measurement environment, equipment performance or occasional failures in the external trajectory of the command center, such as optical intersection, pulse radar, and multi-velocity measurement, there may be interruption points. Fault judgment cannot be made if th...

AI Technical Summary

Problems solved by technology

[0003] Due to the measurement environment, equipment performance or occasional failures in the external ballistics of the command center, such as optical intersection, pulse radar, and multi-velocity measurement, there may be interruption points. Fault judgment cannot be made if the requirements of two independent external measurement information sources are met, and in the end, the guidance accuracy of peripheral measurement equipment may be reduced, resulting in the loss of target lock and the inability to continue tracking, etc.

At present, the center mainly relies on ballistic redundancy, artificial optimization and other methods to avoid the impact of interruption points on peripheral systems, and lacks active correction methods for interruption points. The breakpoint avoidance method above also no longer works

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