Abstract: A feedback loop for use in the guidance system of a guided missile being wn against multiple targets. The feedback loop modifies a transient signal present in the system by introducing a time lag sufficient to cause the missile relative heading change command signal subsequent to target resolution to be equal to the change in the missile antenna-to-target pointing vector that occurs at resolution.

Abstract: Two dimensional beam steering of an antenna array is effected by feeding a lurality of radiating elements from a hybrid matrix that is a beam forming and phasing network in combination with single pole multiple throw switches where switching the various matrix terminals give the elevation beams. Ferrite phase shifters feeding into the single pole multiple switching means provides steering of the antenna beam in the azimuth plane.

Abstract: A solid state control system for controlling a high voltage primary power pplied to a plurality of power supplies by means of a TTL voltage level. Circuit means are provided to sense the power supply whose DC voltage goes to zero volts due to circuit anomalies, or other reasons. Upon sensing the anomaly the indicator means indicate via a storage device which power supply has failed, before interrupting the primary power.

Abstract: A passive ranging system for determining the range of a target radar by uizing the scan characteristics of the target radar. Receivers are placed on each of two aircraft flying in a specified formation. One aircraft relays detected pulse amplitude envelopes to the other aircraft. The second aircraft measures time delay between impacts of the main beam of the target radar on the two aircraft and a computer determines range according to equation R=D/K.DELTA.t where .DELTA.t is the measured time difference, D is the distance between aircraft and K is a constant depending on the type of target radar.

Abstract: A modulated signal is injected into receiver under test. The output of the eceiver is fed directly to a first power measuring device and through a digital filter to a second measuring device. The two measured quantities are fed to a divider circuit which provides an output proportional to signal to signal and noise ratio.

Abstract: Apparatus for generating a coherent multichannel signal. The signal for each channel can be independently phase, frequency and amplitude modulated. The coherent multichannel signal is locked to a reference signal. A frequency generator establishes, at each output sample time, the phase information for each channel. A waveshape section converts the phase information into amplitude information to generate the desired waveforms. A multiplier amplitude modulates the generated waveforms which are converted into an analog voltage and fed to a low pass filter for smoothing the output and eliminating undesired high frequencies.

Abstract: A means is provided to display a picture with a portion magnified while the est of the picture remains constant. The timing and clock rate applied to a solid state sensor (such as charge coupled devices or self-scanning photo-diode arrays) are adjusted so that the output of the sensor will provide a variable zoom video to be displayed by a standard TV monitor.

Abstract: 1. A communications transmitter system comprising; serial register means pted to receive digital information for generating a digital word and having inputs and outputs; parallel register means operatively connected to the output of said serial register means for storing the output of said serial register; modulating means operatively connected to the output of said parallel register means for generating upper and a lower sidebands; each of said sidebands containing said digital word complementing means operatively connected to said modulating means for complementing one of said upper and lower sidebands; and radio frequency transmitter means operatively connected to the output of said complementing means and said modulating means for transmitting said upper sideband and lower sideband simultaneously.

Abstract: 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 is jamming signal fall-off in the guard detector and there is an increase in signal strength in the passive detector.

Abstract: A system for selecting the mode of detonating a cluster warhead. The warh consists of a number of bomblets which are configured to be packaged into a warhead cannister. An explosive switch is initiated which permanently opens the dispersing circuit and prevents the bomblets from being dispensed and the warhead is exploded in the unitary mode. Failure to open the dispersing circuit will permit the warhead to disperse and each bomblet will explode individually.

Abstract: A hand-held fiber optic grinding and polishing tool for finishing ends of ber optic cables includes a motor mounted in a hand-held body member for rotatably driving a disc. The disc has a circular planar surface with multiple discrete concentric sections, each section having a different degree of abrasive surface for grinding and polishing. A fiber optic cable guide is supported on the hand-held body member and has multiple ports to receive fiber optic cable ends, each of the ports being aligned with one of the concentric abrasive sections and configured to position the fiber optic cable ends for a predetermined amount of grinding and polishing. In a preferred embodiment the fiber optic cable guide is removable to permit selective replacement by alternate guide members accommodating different sizes of fiber optic cable ends.

Abstract: Access to additional memory is provided by extending two registers and adg a no-index register reference which creates an extended data address register for directly addressing the additional memory.

Abstract: A delay line which disappears under voice control is comprised of a pluray of shift registers delays the incoming voice signal to permit transmission of the voice scrambler preamble. The delay is removed over a period of time during speech transmission by removing a segment of the delay line each time a pause of a specified length is detected in the speech.

Abstract: A device for determining the state of charge in batteries. The battery un test is discharged to its maximum capability by controlling the discharge current in a linear manner. The product of the current and battery voltage is recorded until the battery power reaches maximum at the maximum power point. The readings, peak power and the potential of the battery at the peak power, are held on meters by peak read and hold and track and hold circuits, respectively. From the readings obtained the state of charge can be determined by using a calibration curve for the type of battery being tested.

Abstract: A flash tube modulator circuit having a high peak power output at a high etition rate (50 KC) with variable pulse widths by employing resonant charging and discharging to ionize the gas in a flash tube followed by a high current pulse to produce a high peak power output.

Abstract: A head controlled mechanism for the proportional control of a driven devi A mechanism is provided whereby a control signal is generated proportional to the movement of the head of an operator to control the speed and direction of the driven device.

Abstract: 1. An encoded echo-ranging signal generator comprising in combination;A digital shift register having a plurality of binary encoded stages,A shift pulse generator coupled to said digital shift register for the tiy shifting thereof,An anti-coincidence circuit having a pair of inputs and an output with one of said inputs being connected to a predetermined stage of said digital shaft register and the other input thereof coupled to the output of said digital shift register and with the output thereof connected to the input of said digital shaft register, to randomly recirculate through said register the binary contents of said encoded stages,An echo-ranging system coupled to the output of said digital shift register,And a digital message encoder coupled to said digital shift register for the respective binary bit encoding of each stage thereof.

Abstract: An antijam device for use in radar and missile guidance systems which tra a doppler-shifted CW target echo by means of an automatic frequency control loop. Means are placed between the doppler filter and error detector portion of the automatic frequency loop to suppress the interference signal and generate an output signal which is essentially identical in frequency and amplitude to the target doppler signal which is tracked instead of the jamming signal.

Abstract: 1. In combination in a sonar system for displaying a succession of echo sals received from a target illuminated respectively by a succession of transmitted pulses,Means for generating a base threshold quantity related to background noise,A comparator for comparing the amplitude of each echo signal with the base threshold,First means responsive to received signals which pass said comparator for changing said base threshold in predetermined relatively small increments,Second means responsive to received signals which pass said comparator for changing said base threshold in predetermined relatively large increments.

Abstract: A digital tracker which provides a continuous display of the area tracked mprising a delay line coupled in circuit with a comparator, a video digitizer and a sensor. The digital tracker further comprises circuit means connected between the delay line and the sensor for deriving an error correction signal in response to any mismatch between the present, delayed video scene and the reference scene, stored in the delay line. A staircase raster generator which can be positively synchronized with the delay line through the use of a common master clock is used as the sensor and the delay line is a shift register which enables any desired bit of the stored signal to be available for use at any time.