Muzzle velocity correction
AssigneeU.S. Government as represented by the Secretary of the Army
InventorsAlexander Neeb, Stephen Ginetto, Andrew Surowiec
Life of this patent
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Abstract
A fuze for an airburst munition determines a corrected muzzle velocity via an on board acceleration sensor and processor and corrects an airburst time, accordingly. Velocity calculations are made in real time which allows for timely update of airburst time thereby preventing error stack up due to muzzle velocity variations.
Claims7
An airburst munition fuze which adjusts an airburst location based on a corrected muzzle velocity measurement, the airburst munition fuze comprising:
- an on board acceleration sensor for providing a measured acceleration;
- an on board memory encoding one or more processor-executable instructions;
- and
- an on board processor configured to load the one or more processor-executable instructions, which when executed by the processor, causes acts to be performed comprising:
- receiving the measured acceleration;
- filtering the measured acceleration to remove noise resulting from a setback event;
- numerically integrating the measured acceleration to determine a velocity of the airburst munition;
- determining a corrected muzzle velocity by defining an end truncation of the velocity.
A method for adjusting an airburst location of a munition based on a corrected muzzle velocity measurement, the method comprising the steps of:
- receiving a measured acceleration from an on board accelerometer;
- filtering the measured acceleration with a total variation de-noising filter to remove noise resulting from a setback event;
- numerically integrating the measured acceleration to determine a velocity of the airburst munition;
- determining a corrected muzzle velocity by defining an end truncation of the velocity;
- updating the airburst location based on the corrected muzzle velocity.
Dependencies are inferred from the claim text.