Predictive Functional Control-Based Zenith Pass Controller Design for Roll-Pitch Seeker
Table 1
Definitions of coordinate system.
Frame
Definition
B
(i) Missile body frame (regarded stationary for simplicity) (ii) : missile nose direction (iii) : right direction, on the yaw plane
S
(i) Seeker antenna heading frame (ii) : antenna boresight direction (iii) : coincides with pitch gimbal axis (iv) = seeker roll, pitch gimbal angles
P
(i) Target pointing frame (ii) : sightline direction (iii)
DS
(i) Target pointing frame (ii) : sightline direction (iii) : coincides with pitch gimbal angles (iv) = desired roll, pitch gimbal angles of seeker
LOS
(i) LOS frame (ii) : sightline direction (iii) : coincides with the z-axis of body frame (iv) = azimuth and elevation angles of LOS based on missile body frame