Active proximity fuse

Details Active proximity fuse Active proximity fuse

1992-12-01

1994-06-21

Pihulic, Daniel T.

Ammunition and explosives

Igniting devices and systems

Ignition or detonation circuit

F42C 1302

Patent

active

053220170

ABSTRACT:
The invention relates to an active proximity fuse with polarization-related sensitivity. Radiation which is reflected by particles in the atmosphere towards the receiver of the proximity fuse and which does not originate from reflection at the target has a negative effect on the operation of a proximity fuse. To reduce this effect the proximity fuse according to the invention is provided with elements in the transmitter of the proximity fuse for linearly polarizing the emitted radiation and elements in the receiver from suppressing the received radiation with linear polarization essentially coinciding with the direction of the linear polarization of the emitted radiation. This prevents radiation which is reflected by spherical particles, such as water droplets, with unchanged polarization after reflection, from reaching the detector of the receiver, while radiation reflected by the target is depolarized and a certain part of the radiation can be detected.

REFERENCES:
patent: 4733609 (1988-03-01), Goodwin et al.
patent: 4752799 (1988-06-01), Stauffer
patent: 4896031 (1990-01-01), Pettersson et al.

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