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| Number | Title | Issue Date |
| 4032918 | Dual channel radio frequency fuzing system 1. In a dual-channel radio frequency fuzing system the combination comprig: A. an oscillator circuit including a loop antenna tank circuit adapted to operate at a first predetermined frequency in response to a first modulating signal having a first repet... | 06/28/1977 |
| 4021803 | Proximity sensing apparatus This invention relates to a proximity sensing apparatus for energizing a control circuit whenever the distance between two objects moving relative to one another at an angle other than 180° becomes a minimum, and more particularly, relates to a proximity... | 05/03/1977 |
| 4019185 | Phase modulation apparatus Phase modulation apparatus particularly suitable for coherent radar applications wherein an interrupted carrier-wave is phase modulated according to a predetermined coded sequence. Apparatus comprises a carrier wave generator having an output for connecti... | 04/19/1977 |
| 3994229 | Pulse doppler proximity fuze 1. An oscillator-detector circuit comprising operating potential energy rces, first self pulsing circuit means intermittently oscillatory for developing high frequency electromagnetic energy pulses of a preselected carrier frequency and repetition rate, ... | 11/30/1976 |
| 3985080 | Two selector gate for active-passive radio proximity fuzes A device for use in an active-passive fuzing system to guard against the functioning of the fuze due to jamming signals transmitted by the target. A gate circuit is utilized to prevent an enabling signal to be passed to the warhead detonator until there ... | 10/12/1976 |
| 3965470 | Pulse analyzer for an RF moving target detector Threshold count pulses, the number of which being proportional to the slope of an impedance curve of a radiating antenna in an RF detection system, are counted in a first counter and, upon receipt of a read pulse representing a threshold of impedance, are... | 06/22/1976 |
| 3958241 | Chaff discrimination system 1. A microwave radio fuze system for a missile having means for discriminng between a target and chaff comprising in combination, a pair of oppositely polarized transmitting antennas operably connected to a frequency modulated oscillator by a first switc... | 05/18/1976 |
| 3945008 | Electronic proximity fuse having multiple Doppler frequency channels 1. A Doppler frequency responsive electronic proximity fuse comprising, in combination: A. means for transmitting signals at at least two different frequencies and for receiving Doppler frequency signals which are reflected by a target; B. means forming a firs... | 03/16/1976 |
| 3938147 | Frequency modulated doppler distance measuring system 4. A single antenna missile fuzing system adapted to function at a predetined distance from a target, said system comprising in combination: a microwave oscillator, a frequency modulator for modulating said oscillator at a frequency which is considerably... | 02/10/1976 |
| 3934510 | Proximity fuse A proximity fuse comprising at least two frequency selective amplifiers having different band-pass characteristics and both receiving the same input signals. The first amplifier, having the narrower band-pass filter, will activate a detonator upon receipt... | 01/27/1976 |
