Angle only range estimator for homing missile

Details Angle only range estimator for homing missile Angle only range estimator for homing missile

1996-05-23

1997-08-26

Carone, Michael J.

Aeronautics and astronautics

Missile stabilization or trajectory control

Automatic guidance

244 316, 244 32, F42B 1501

Patent

active

056603550

ABSTRACT:
Missile motion information from an inertial measurement set and the angle-to-target information from a seeker/sensor is used to estimate range and/or time to go on a homing missile without a direct measurement of range or range rate. Up to six comparisons of spectrally matched linear and angular measurements, corrected by target state estimates and analytical coupling terms, are used to determine the error in the range estimate. A nonlinear sorting and filtering procedure rejects the unusable error sources among the six potential error sources, and thresholds against too little information. The stability margin in the missile guidance loop is used as a sensor indicator for excessive estimated range.

REFERENCES:
patent: 4038527 (1977-07-01), Brodie et al.
patent: 4456862 (1984-06-01), Yueh
patent: 4783744 (1988-11-01), Yueh
patent: 5253823 (1993-10-01), Lawrence
patent: 5429322 (1995-07-01), Waymeyer

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