Burnout time estimation and early thrust termination determination for a boosting target
First Claim
1. A method for estimating staging of a boosting target, said method comprising the steps of:
- sensing position of the boosting target from moment to moment to thereby generate target position information;
generating current stage state estimates including position, velocity, time index error into the thrust template, and motor scale factor error {circumflex over (K)};
determining estimated burnout time tBOEst of the current stage by
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Abstract
A system senses the presence of a boosting missile or target and processes the information by comparison of the data with a plurality of predetermined templates of nominal missile characteristics, in order to determine the state of the missile. The processing includes estimation of burnout time and of early thrust termination. Both are determined by generating current stage state estimates including position, velocity, time index error into the thrust template, and motor scale factor error. The change in motor scale factor is compared with a threshold to determine if early thrust termination has occurred. The estimated burnout time of the current stage is calculated from the burnout times of the current and the previous stage processed with the estimated motor scale factor and with state estimates from a filter.
99 Citations
18 Claims
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1. A method for estimating staging of a boosting target, said method comprising the steps of:
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sensing position of the boosting target from moment to moment to thereby generate target position information; generating current stage state estimates including position, velocity, time index error into the thrust template, and motor scale factor error {circumflex over (K)}; determining estimated burnout time tBOEst of the current stage by - View Dependent Claims (6, 7, 8)
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2. A method for determining early thrust termination of a boosting target, said method comprising the steps of:
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sensing position of the boosting target to thereby generate target position information; generating current stage state estimates including position, velocity, time index error into the thrust template, and motor scale factor error {circumflex over (K)}; determining if target has early thrust terminated using the motor scale factor. - View Dependent Claims (3, 4, 5)
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9. A system for estimating staging of a boosting target, said system comprising:
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a processor executing instructions for; sensing a position of the boosting target to generate target position information; generating current stage state estimates for said boosting target including position, velocity, time index error into a thrust template, and motor scale factor error; using said current stage state estimates for said boosting target to determine an estimated burnout time of the current stage; and using said estimated burnout time of the current stage to predict a future location of said boosting target. - View Dependent Claims (10, 15, 17)
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11. A system for determining early thrust termination of a boosting target, said system comprising:
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a processor executing instructions for; sensing a position of the boosting target to generate target position information; generating current stage state estimates for said boosting target including position, velocity, time index error into the thrust template, and motor scale factor error; and determining if the boosting target has an early thrust terminated using the motor scale factor. - View Dependent Claims (12, 13, 14, 16, 18)
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Specification