Abstract: An acoustic training device for simulating the effects of an unexploded sunition in a tactical engagement simulation system generates an audible signal of a predetermined frequency and duration when handled or otherwise disturbed. A timing circuit allows the referee to place the armed device in the playing field without activating the audible signal. Exemplary submunitions include the M118 Rockeye with an integral horn, the blue series of spherical bomblets, and the M42/46 grenade submunition.

Abstract: GaAs base optical waveguide-based structure for a neural network is discld which may form the basic functional building block of a neural architecture in which the waveguide architecture contains at least three electrically active components which are electrically isolated from each other. The waveguide parameters are such that the laser light propagating through the waveguide is a single-mode in both transverse and lateral directions. A superlattice structure is incorporated in the waveguide core and results in electroabsorption of the input laser light. An electric field is supplied to the active components in order to change the transmission properties of the core material, thus modulating the light passing through the core material.

Abstract: A thermal test target with a uniform surface temperature which can be used to characterize and measure thermal image degradation due to atmospheric propagation of the image radiation field. This thermal test target board produces very uniform spatial frequency patterns with near perfect transitions between hot and cold portions which do not change during the diurnal cycle and which are not impacted by environmental changes.

Abstract: A detector card strain relief system for use with a fiber optic detector system is disclosed in which a detector card/strain relief brace is permanently fixed to the detector card for receiving a plurality of optical fibers exiting from a like plurality of detector cans. The plurality of optical fibers pass through two strain reliefs which are connected to either end of a monocoil. Each of the strain reliefs is connected respectively to the detector card/strain relief brace and a fiber termination mount such that the termination mount cannot be moved without moving the detector cans and, thus, the optical fibers are protected from pulling away from the detector cans while at the same time allowing for proper cooling of the detector cans and minimizing light leaking from the optical fibers. Alternate embodiments for the detector strain relief brace are provided such that the optical fibers may exit from the bottom or the side of the detector card.

Abstract: A double ramped, saboted, kinetic energy assembly automatically aligns a jectile in a gun tube. The assembly has an acceleration activated device consisting of a split centering ring causing alignment during the early phase of the shot motion of the projectile. The assembly also includes a series of small protrusions or a continuous expandable ring which forces and maintains the projectile into a straight aligned position during its traversal of the gun tube. The assembly may have either a smooth bore or a rifled bore gun tube. The disclosure also include a method related to the assembly.

Abstract: A remote radar phase calibrator that provides radar phase measurement and libration. A trihedral or dihedral reflector placed in the radars field of view provides an amplitude calibrated phase stable signal to the radar. Movement of the reflector head-on to the radar provides a phase angle measurement that varies as a function of the radars transmitted wavelength and the distance the reflector is moved.

Abstract: An RF-insensitive semiconductor ignitor and primer cup assembly is created sing a double polished n-type silicon substrate having its top and bottom surfaces partially metallized to form Schottky barrier diodes. The metallized portion of the back side of the substrate is placed in contact with a conductive surface, and means are provided to electrically isolate those portions of the substrate which have not been metallized from both the metallized portions and the conductive surface. In one embodiment, the isolating means is an integral oxide ring which extends from the periphery of the contact metal to the edge of the substrate. In another embodiment, the means of isolation is a separate plastic ring.

Abstract: A limiting filter has nonlinear signal limiting devices integrally connected to the filter structure so that as the power level of input signals increase the nonlinear signal limiting devices decrease their impedance in response thereto, detuning the filter. Filter isolation thus becomes a function of both frequency and input power.

Abstract: A high voltage, laser light initiated, dielectric breakdown switch for use n safe and arm systems for initiating exploding foil initiators. One electrode has an opening which allows light from a laser source to shine on dielectric material and induce breakdown. Conduction occurs between the electrodes and transfers energy from a power supply to the electronic foil initiator.

Abstract: A training grenade uses a high intensity flash to simulate an explosion in a time delayed fashion when thrown and/or a sonic device such as a buzzer for indicating arming. Alternative means to simulate the explosion can include sonic devices or radio frequency sources. An internal power source and firing circuit connected to an internal timer control the activation of the indicator or flash upon closure of an externally controllable switch. The switch can be locked in an open position through the use of a release pin which closes upon removal of the pin or can be held open through the use of a pivotally attached safety lever as used in conventional grenades.

Abstract: This disclosure is directed to the use of application specific integrated rcuits in safe and arm devices. The application specific circuits each comprising a buffer means for forming an environmental interface and providing input to a microcontroller, latch means for recording physical evidence, power-up reset means for providing a delayed state change which initializes the microcontroller, static and dynamic AND gate means, command arm data link register means, and a programmable counter means for providing a hard logic derived timing function.

Abstract: An acoustic training mine simulator system for use with the pre-existing tiple Integrated Laser Engagement System (MILES). The MILES, located on a target, responds to the acoustic output of said mine simulator upon simulated detonation. The MILES acoustic detection circuitry momentarily disconnects the MILES power supply from the rest of the MILES circuit, causing the MILES to generate an audible alarm indicating a target has been hit.

Abstract: A high power microwave/radio frequency radiating projectile that stores electrical energy in a Pulse Forming Line network. Electrical energy is converted to high power microwave/radio frequency energy by a subnanosecond switch either in a single pulse mode or a repetition rate mode.The high power microwave/ratio frequency energy is then radiated by an antenna built into the projectile. The heavy power supply required for providing the high voltage necessary for charging the pulse forming line network is not part of the projectile but is contained in the launching gun, or as ancillary equipment to the launching gun.

Abstract: A technique and apparatus for measurement of resistances of 0.01 ohm and s without disconnection from the circuit. The invention is used for measurement of degradation in cable shields by measuring the droop caused by circuit resistance in an induced current pulse in the undisconnected circuit. The method can also be used for measurement of junction resistances in high current circuits such as auto starters. The invention allows measurements to be made with the circuits connected so that the faults are present in the measurement setup. The method includes inductive coupling of long duration repetitive current pulses onto the circuit under test, measurement and display of induced current pulses, and display of induced current pulses on an oscilloscope.

Abstract: A method and apparatus for automatically determining pathway boundaries for autonomous robotic navigation. A structured light pattern consisting of a plurality of lines is projected on the pathway and background and the reflected pattern is detected by a stereoscopically located video camera. Since the texture of the pathway and background are different, the captured image may be processed to distinguish one from the other. Image processing includes Hough transformation of the image field, rank filtering and morphological dilation. The end points of the pathway lines identified by such processing as well as the 3-D coordinates of such end points are determined.

Abstract: A method and apparatus for electronically simulating the transmit-receive gnal path of doppler radar during a target encounter in a simulator. It is an end-to-end fuze (radar) test from RF "in" to video "out". Target signature data is collected at a reduced relative encounter velocity from the actual target. The modified pulse doppler radar produces two orthogonal signals which define the complex received radar signal. These signals are then recorded. The missile radar to be tested is coupled to the simulator which simulates an actual missile to target encounter. During the test the PROMs are clocked into RF components in an RF Loop and clock counter is started. When the radar threshold is exceeded, a radar video output function stops the counter. By correlating the number of clock pulses counter to the distance marks traveled along the missile trajectory, missile radar function with respect to target location data is obtained and missle lethality computed.

Abstract: This invention recovers the time waveform envelope of a human voice signal ithout the loss of subtleties providing speaker recognition cues and voice quality.This is accomplished by rectifying the voice envelope and then obtaining slope information about the original time waveform to detect peaks which are successively held by sample and hold circuitry.

Abstract: An array of eight trihedral corner reflectors arranged to be suspended beth a balloon such that they aim into the eight quadrants of a three-dimensional coordinate system aligned vertically and equipped with a set of vanes which cause it to rotate when ascending.

Abstract: A battery charge indicator for determining the remaining useful life of a battery which accurately measures the battery voltage in an operational environment and provides an indicator of relative levels of the operational condition of the battery and a proportional measurement of its expected life utility. The device employs solid state circuit elements for compactness, which include a Zener diode as a reference voltage element coupled to a voltage divider network and a plurality of amplifiers connected to an array of separate indicators such as light emitting diodes, which indicate particular battery voltage. A thermistor network may be included to provide compensation for temperature variations of the operational environment of the battery and load.

Abstract: A camouflaged VHF military antenna is formed from the slot which is created hen the door of a pick-up truck having a metal shelter thereon is left partially ajar.