Advanced Guidance Algorithms for Homing Missiles with Bearing-only Measurements.
Annual technical rept.,
TEXAS UNIV AT AUSTIN DEPT OF AEROSPACE ENGINEERING AND ENGINEERING MECHANICS
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The research of this grant is directed toward the development of an advanced guidance system navigation filter and guidance law for a short-range air-to-air missile having a passive seeker angle-only measurements. During this year, four subjects have been investigated. First, additional experience has been gained with the modified-gain extended Kalman filter it is becoming apparent that it works the same as or better than the extended Kalman filter for the homing missile problem. Second, a new target-acceleration model has been developed to replace the first-order Gauss-Markov process normally used this model allows target acceleration vector to rotate and keeps its magnitude within bounds. Third, because the homing missile problem with angle-only measurements is nonlinear, the guidance law affects the performance of the filter a new guidance law based on maximizing a measure of the size of the information matrix has been developed and has been shown to improve filter performance. Fourth, a study of the use of new theory on fault detection has been initiated the intent is to use this theory to detect target maneuvers the target maneuver appears as a fault so that the filter can be restarted. Author
- Air Navigation and Guidance