Roll angle determination

Details Roll angle determination Roll angle determination

1991-04-18

1992-11-17

Jordan, Charles T.

Aeronautics and astronautics

Missile stabilization or trajectory control

Automatic guidance

244 311, 244 314, F41G 730

Patent

active

051636379

ABSTRACT:
An apparatus for determining the roll angle position of a rotating projectile, with the aid of polarized electromagnetic radiation, comprises a transmitter for emitting a position-determining polarized radiation in the direction towards the projectile and a receiver arranged in the projectile for receiving the transmitted radiation. The emitted radiation consists of two components, a first component in the long-wave (LF) band and a second component in the microwave band. The microwave component comprises a pulse train in which the pulses are intended to indicate when the long-wave component is situated in a certain phase position, for example, to indicate the sinusoidal long-wave component's zero cross-overs with a positive-going derivative. This takes place in such a way that a synchronizing pulse is emitted by the long-wave transmitter to the microwave transmitter which transmits a short series of microwave pulses as an indication to the projectile.

REFERENCES:
patent: 4030686 (1977-06-01), Buchman
patent: 4750689 (1988-06-01), Yff
patent: 4967981 (1990-11-01), Yff
patent: 4979696 (1990-12-01), Yff

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