Abstract: A millimeter wavelength solid dielectric waveguide having either an undulng or roughened outer surface is disclosed. As configured, and properly designed, for the wavelength of interest, the non-cylindrical surface will not have any deleterious effects on the electromagnetic properties of the dielectric waveguide. Moreover, the novel surface treatment will greatly increase the amount of heat energy that can be dissipated by radiation and convection from the dielectric waveguide thereby increasing its power handling capability.

Abstract: An oil content monitor/control unit system is configured to automatically nitor and control processed effluent from an associated oil/water separator so that if the processed effluent exceeds predetermined in-port or at-sea oil concentration limits, it is either recirculated to an associated oil/water separator via a ship's bilge for additional processing, or diverted to a holding tank for storage. On the other hand, if the oil concentration of the processed effluent is less than predetermined in-port or at-sea limits, it is discharged overboard.

Abstract: An oil content monitor/control unit system including an oil/water disperser evice is configured to automatically monitor and control processed effluent from an associated oil/water separator so that if the processed effluent exceeds predetermined in-port or at-sea oil concentration limits, it is either recirculated to an associated oil/water separator via a ship's bilge for additional processing, or diverted to a holding tank for storage. On the other hand, if the oil concentration of the processed effluent is less than predetermined in-port or at-sea limits, it is discharged overboard. The oil/water disperser device is configured to break up any oil present in the processed effluent into uniform droplets for more accurate sensing of the oil-in-water concentration level thereof. The oil/water disperser device has a flow-actuated variable orifice configured into a spring-loaded polyethylene plunger which provides the uniform distribution of oil droplets.

Abstract: An eddy current magnetic field effects measurement apparatus employs, a reference sensor located so that it measures an applied field and any environmental fields but does not measure eddy current effects. Then an estimate(s) of the applied field at the locus of a plurality of measurement sensors is constructed and stored. Next, a conductive object or material to be measured is placed in the applied field in the vicinity of the plurality of measurement sensors away from the reference sensor and measurements are made of the applied field, any environmental fields and any fields due to the effects of eddy currents induced into the conductive object or material. Finally, the aforementioned stored estimate(s) are used to compensate the applied field at the locus of the plurality of measurement sensors so that the eddy current magnetic field effects due to the placement of the conductive object or material can be observed on a keyboard/display or printed via a printer/plotter.

Abstract: An improved bracket decoder apparatus including an enhanced bracket decoder ortion and a regenerative bracket decoder portion operates to generate enhanced bracket decode signals and regenerative bracket decode signals. The foregoing combination of decoder portions will allow digital display systems which use IFF information to detect all targets that are replying regardless of the IFF train spacing, even overlapping replies. The enhanced bracket decoder portion of the apparatus can be operated alone to detect all reply conditions except the one of overlapping replies. The apparatus is configured to provide presently used signals also, i.e., the bracket decode, the degarbled bracket decode, and the range and code information for each video reply.

Abstract: A test set including a digital card tester section and a satellite simula section is used to detect the reduced capabilities of an associated navigational satellite receiver and to isolate malfunctions therein. The digital card tester section is configured to generate digital signals (signatures) which are used to test and isolate faults in four digital system boards (cards) of the associated navigational satellite receiver. The satellite simulator section is configured to generate a facsimile of a navigational reference signal which is normally transmitted by an associated satellite system and received by the aforementioned associated navigational satellite receiver. The facsimile signal is used to test the receiver-processor section of the associated navigational satellite receiver.

Abstract: An intrusion detector is configured to transmit signal(s) of a very short ration and then process the returned signal(s) reflected from various surfaces and objects within the propagation path in a room to be secured. The return signal(s) is a succession of peaks whose return times represent the location of respective objects. As configured, the intrusion detector apparatus includes, inter alia, a microprocessor that stores processed facsimiles of the return signal(s) for an unoccupied room and continually makes comparisons with subsequent returned signal(s). When the returned signal(s) changes, as a result of an unauthorized entry into the room, for example, a visual and/or audible alarm indication is produced.

Abstract: An apparatus for and a method of controlling multiple time varying proces by a central control device through a use of an adaptive data acquisition scheme is disclosed. A state estimator is used to extrapolate the current state of each control process as well as an estimate of the uncertainty of each state estimate. The state whose uncertainty is greatest is selected. The selected process is then measured, estimated, and a control variable calculated. Use of this selection criteria allows a single control device to effectively control more time varying processes then if the controls had been determined by a controller using a fixed sampling rate. Statistics for each process are updated with each measurement in order to compensate for the time/varying nature of the processes.

Abstract: A scanning alarm electronic processor [hereinafter SAEP] for receiving and valuating a predetermined number of analog signals is configured to perform, inter alia, high speed/high resolution analog computations thereon using micro-programmable methods and devices. The SAEP uses unique, parallel pipeline processing of certain functions to obtain the desired high sample rates. The SAEP is divided into two sections which contribute to its high speed performance. Each section contains the circuitry; i.e., modules, necessary to perform the algorithms for half of the predetermined number of analog signals. A common central processing unit module ties the two sections together. The SAEP operates to compute a droop compensated differential voltage for each one of the predetermined number of analog signals, to compute a weighted sum of the differential voltages, and to compare the weighted sum with an absolute value and perform an alarm evaluation.

Abstract: An interceptive type electric probe for mapping the radial current density rofile of high energy and high current electron beams comprises an input sensor, an interface support connector and an output support connector. The entire structure of the electric probe is configured to closely approximate a coaxial transmission line of a predetermined impedance that is opened ended but yet shielded. The nature of the construction of the probe, in terms of materials and techniques, allows for survival thereof in high temperature and intense beam environments.

Abstract: A 360.degree. IFF video resynchronizer unit for storing pertinent data such s the range, the code, the IFF mode and the azimuth for each reply from associated transponders is disclosed. The 360.degree. IFF video resynchronizer unit is also configured for interfacing with one of a plurality of interrogator subsystems associated with a plurality of radar systems having multiple antennas so as to backup any one of the plurality of interrogator subsystems with a single 360.degree. IFF video resynchronizer unit. In addition, any number of the plurality of interrogator subsystems can be replaced with a single 360.degree. IFF video resynchronizer unit when at least one of the plurality of interrogator subsystems is present.

Abstract: A converter, according to the present invention, operates to convert pertnt IFF data which is in a digital format to an IFF composite video format. The converter is configured to interface with conventional plan-position indicators (PPIs) and decoders.

Abstract: A pattern recognition apparatus makes use of both optical templation and nal correlation techniques by using liquid crystal panels, CCD type cameras, video storage techniques, inter alia, to detect and identify electronic signal patterns transmitted thereto. The apparatus is also configured to detect pattern changes and image object movement.

Abstract: A tactile bumper is configured to obtain sensory information for impact dction and collision avoidance from the entire perimeter of an associated autonomous mobile robot or platform. The tactile bumper comprises a plurality of free-floating strips encased in a housing and is disposed in a spring-loaded fashion so as to normally be in an extended position. A plurality of microswitches are affixed to the housing and are arranged behind the plurality of free-floating strips in such a fashion so as to be activated by any displacement thereof. The most significant component(s) of the tactile bumper are a plurality of free-floating corner pieces, each of which is configured with an angled cut at its ends so as to mate with complementary angled cuts of juxtaposed ones of the plurality of free-floating strips.

Abstract: The application of peristaltic charge-coupled-devices to an analog delay e provides an ultra high speed n-bit propagatory analog-to-digital converter system. The system also includes somewhat unconventional ECL weighted current source digital-to-analog converters. The analog delay line comprised of the peristaltic charge-coupled-devices is clocked in exact synchronism with a digital delay line. Operation at conversion rates above 100 MHz are made possible.

Abstract: A synchronous demodulator is configured so as to extract gyroscope position nformation in a polar coordinate format and then resolve it into position information in a more useful cartesian coordinate format. The technique involves integration of a gyroscope cage coil signal over integration intervals controlled by spin reference signals rather than by the commonly noisy cage coil signal. Integration of the cage coil signal over intervals controlled by the spin reference signals yields outputs of .lambda. cos .theta. and .lambda. sin .theta. which are subsequently sampled and held and then summed to produce a precession coil drive signal whose phase is in the proper relationship to make the gyroscope precess in the correct direction.

Abstract: A device for shielding a radiation source that is adapted to selectively position the source to be stored and shipped or positioned for repetitively establishing a radiation field for calibrating radiation detection devices.

Abstract: A data collection system is configured using, inter alia, a master proces and a plurality of slave processors one for each data source to be collected. The slave processors depend upon the master processor for system timing and interpretation of operator commands via a display/keyboard. Each slave processor is a dedicated independent microcomputer whose software is customized for the data collection required. Overhead software for the slave processor is minimized by the use of a simple command structure between the master processor and the plurality of slave processors.

Abstract: A rugged portable diagnostic apparatus is configured for temporary installation and operation on board Naval ships. The apparatus provides gunnery training support by allowing a comprehensive empirical assessment and feedback of individual, team and equipment performance on an economical and environmentally responsible basis.

Abstract: A method of improving field-effect transistors, and the product thereof, wherein the resistivity of the upper layer of the source-gate channel region of a GaAs field-effect transistor (FET) may be selectively raised is disclosed. Impurity ions are implanted in the source-gate channel region followed by a much shallower implantation of boron in the same region. The boron ion concentration should exceed the N+ impurity ion concentration by a factor of 2 or more.