Passive optical proximity fuze

Details Passive optical proximity fuze Passive optical proximity fuze

1976-07-09

1978-07-04

Engle, Samuel W.

Ammunition and explosives

Igniting devices and systems

Ignition or detonation circuit

244 316, 102215, F42C 1302, F42C 1300, F42C 1106

Patent

active

040981916

ABSTRACT:
An on board system for determination of slant range to a ground impact point of a ballistic vehicle. The system utilizes two infrared sensors viewing the ground at a very small divergent angle with respect to each other. The off axis displacement angle is small enough to enable viewing of infrared landmarks at low approach angles. The system utilizes a correlator to measure time delay between successive sensings of ground landmarks and slant range is computed without necessity of knowledge of any of the angles involved.

REFERENCES:
patent: 3719149 (1973-03-01), Masin
patent: 3837283 (1974-09-01), McCracken
patent: 3843076 (1974-10-01), King et al.
patent: 4010689 (1977-03-01), Sochard et al.
patent: 4022132 (1977-05-01), Blomquist et al.

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