Abstract: A fuzing system in which a third or obscuration channel having a forward king narrow beam width detects a target and generates a signal which is fed to a sequence computer. If within a predetermined time after receipt of the third channel pulse, a second pulse is received from either of the two regular infrared channels, a pulse is generated to actuate the firing circuit. If the above time sequence of pulses is not present, the fuze system then functions in the normal two channel mode of operation.

Abstract: 1. In a pulse-repetition frequency discriminator, the combination compris: gA. a pulse generator for generating pulses at a predetermined reference frequency,B. a gate generator coupled to said pulse generator and being responsive to the generated pulses to generate a gate signal having a width of a predetermined percentage of the repetition period of the predetermined reference frequency,C. ramp generator means coupled to said gate generator for converting said gate signal into a triangular shaped signal,D. a normally closed gate circuit coupled to said ramp generator means and to an input terminal adapted to receive radar pulses of interest and being responsive to received radar pulses having a frequency within said gate signal to pass a portion of said triangular shaped signal,E.

Abstract: An air droppable sealed warhead cannister capable of housing a plurality of omblets, each bomblet having a pressure-sensitive fuze capable of being controlled by the presence and absence of a predetermined pressure in the cannister.

Abstract: A manually operative, programmed (dedicated) calculator that computes the nge, bearing, and time of closest point of approach for any number of selected target ships, and also their course and speed.

Abstract: The closed feedback loop of an oscillator contains a network (i.e. a resot circuit or filter) which has a distinct phase-frequency characteristic so as to cause an overall in-phase condition. In the subject feedback loop, shifting the phase of the feedback wave in the filter, the frequency of the oscillator will shift due to its double heterodyning circuit to reestablish a net zero phase shift around the loop. This oscillator is particularly adapted to shift a sonar signal frequency to simulate true doppler shift where this shift is a fixed percentage of the frequency.

Abstract: 1. In combination in an acoustic obstacle detection and navigating system;A transmitting station comprising a variable frequency oscillator, a sawth generator coupled to said oscillator for sweeping the frequency of oscillations through the range of frequencies from f.sub.1 to f.sub.2, a submersible projection transducer coupled to said oscillator for continuously ensonifying a sector of water about said transducer with sonic energy varying between f.sub.1 and f.sub.2,A fixed frequency oscillator of frequency f.sub.3 at said station,A sonar receiver at said station including a mixer for combining the frequencies f.sub.1 to f.sub.

Abstract: Tracking filter apparatus for determining the relative phase of synchroni CW navigation systems. The apparatus generates a square wave signal the phase and amplitude of whose fundamental sinusoidal components match those of the fundamental components of signals being tracked. The apparatus operates with a digital computer which processes sample OMEGA amplitudes to acquire and maintain synchronism with the standard OMEGA multiplex pattern.

Abstract: An electronic control system for changing the image size produced by solid tate sensors such as the Reticon sensor array, charged coupled devices, etc. The image size is increased or decreased by varying the horizontal and vertical scanning rate with respect to standard TV timing. The scanning rate is controlled by controlling the frequency of the horizontal and vertical clock pulses applied to the solid state sensor.

Abstract: A system using two concentric fuzing beams in warhead implementation to mure the effective length of the target relative to the missile along the trajectory to prevent drop out of small targets.