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    • 69. 发明专利
    • MEASURING DEVICE FOR POSITION OF ROLL
    • JPH0225698A
    • 1990-01-29
    • JP12270789
    • 1989-05-16
    • BOFORS AB
    • RARUSUUERIKU SUKAIERURUNDO
    • F41G7/00F41G7/24F41G7/30F42B10/26
    • PURPOSE: To transmit angular information in a simple and definite mode to a projectile, a missile, or the like, by an arrangement wherein a polarized radiation includes at least two mutually phase-interlocked radiation components of specified wavelength relationship superposed to have an asymmetric waveform. CONSTITUTION: A transmitter 2 having direct relationship with a launching point transmits a polarized electromagnetic radiation and a projectile has a receiving antenna 3 directed rearward. Based on a signal being produced when the polarized plane of radiation transmitting the roll position of the projectile corresponds to the polarized plane of the receiver, the roll position of the projectile can be measured at a relatively high accuracy but ambiguity of one half revolution is incident thereto. In order to achieve total ambiguity, the polarized microwave radiation includes two mutually fixed components of the wavelength relationship of 2:1 and/or multiples thereof. An asymmetric waveform is obtained when two transmitted microwave components are superposed. Ambiguity can be eliminated by the an asymmetric curve and the roll position of the projectile can be determined definitely.