| 摘要 |
Tracking means for establishing a line-of-sight between a control point towards which the second craft is being guided and tracking the line-of-sight to follow the second craft and deriving a signal +E,dot theta +EE a representing the rate of rotation of the line-of-sight about the control point; monitoring means for deriving a signal e representing the displacement of the first craft from the line-of-sight, a signal representing the range Rm from the control point to the first craft and a signal representing the rate of of change +E,dot R+EE m of the range Rm; ranging means for deriving a signal representing the range Rt from the control point to the second craft and a signal representing the rate of change +E,dot R+EE t of the range Rt; a computer for deriving representations of +E,dot theta +EE c, +E,uml theta +EE c and +E,uml theta +EE c which satisfy the equation+Z c=-2+E,dot theta +EE c3-3+E,uml theta +EE c(+E,dot R+EE t/Rt)where the difference +E,dot theta +EE c-+E,dot theta +EE a is minimised; control means for deriving from the representations provided by the computer a control signal representing f(e)+Rm+E,uml theta +EE c-2+E,dot R+EE m+E,dot theta +EE c where f(e) is a function of e; and, guidance means for causing the first craft to develop an acceleration transverse to the line-of-sight, of a magnitude dependent on the control signal.
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