Abstract: A method for determining distance from a target to an observation station using a Global Positioning System satellite as a radiation source and first and second observation station located receivers. The first receiver receives reflected position determinative satellite radio frequency signals and the second receiver receives direct position determinative satellite radio frequency signals. The time difference between satellite radio frequency signals arriving at the first and second receivers is calculated and combined with difference distance data and angular, azimuth and elevational position data and the distance from the target to observation point is determined.

Abstract: A hair straightening device and method usable with a conventional blow dryer that dries wet hair in a straight configuration from the scalp to the end of the hair strands with minimal heat damage to the hair and without hair tangling problems of conventional methods. The method and device includes two elongated elements coupled in an open/close relationship. The device operates by securing wet hair between the elongated elements and slowly pulling the device along the length of the hair strand while exposing the hair strands to heated air from a conventional blow dryer.

Abstract: A method for making a magnetoresistive sensing device including depositing an ultrathin active film responsive to changes in magnetic field energy onto a compliant layer of periodic table group III-V semiconductor material on a semiconductor substrate wafer, the compliant layer being capable of retaining strain energy resulting from the layering semiconductor materials with different lattice constants. This method produces a battery operable ultrathin device highly sensitive to changes in magnetic field flux.

Abstract: Process control for generating graded multilayer films repetitively and consistently using both pulsed laser sputtering and magnetron sputtering deposition techniques. The invention includes an apparatus which allows for set up of an ultrahigh vacuum in a vacuum chamber automatically, and then execution of a computer algorithm or "recipe" to generate desired films. Software operates and controls the apparatus and executes commands which control digital and analog signals which control instruments.

Abstract: A broadband gigahertz frequency range radio receiver useful in electronic warfare and other applications for incoming signal detection and identification purposes. The receiver is based on Fourier transform examination of incoming signal characteristics and provides real time accomplishment of these tasks by way of using a simplified one-bit digital representation of the incoming signals and a resulting reduction of the computational load associated with the Fourier transform operation. The receiver precedes the Fourier transform operation with signal processing which may include, for example, a limiting amplifier and two bandpass filters. Two incoming signal accommodation is provided, a characteristic which is particularly improved over the characteristics of popular presently used receivers in this field.

Abstract: A heat transfer-based surface flow visualization method and device that uses a temperature sensitive material to detect advection along a substrate upon application of heat and air flow and thereby provides a surface flow pattern. The present invention includes the capability of providing surface flow patterns for positions of flow separation, reversal of flow and transition flow and is non-intrusive and more cost effective than known methods.

Abstract: The present invention provides a realization of a real-time, high frequency Fourier transformation using a single binary-bit kernel function which reduces the mathematical operation mechanizations needed to generate a Fourier transformation from multiplication and associated dense, complex hardware to simple addition and subtraction associated hardware components. The single binary-bit kernel function Fourier transformation generated produces a constant peak amplitude regardless of the number of bits in the input data and is most useful for applications where input data is composed of 1 and 2 binary bits.

Abstract: An improved intracavity sensor based output power control for microcavity light emitting devices. An improved phototransistor transducer is both configured and physically disposed so that it passively transmits the spurious optical energy output of the microcavity light emitting device while simultaneously generating a light determined electrical signal of easily used large magnitude that is nearly free of error. The base-collector region of the transistor is disposed with a quantum well absorbing layer and produces a signal responsive to a selected emission wavelength. The configuration of the optical energy communicating transducer is arranged so that it is improved in sensitivity and especially in selectivity in generating the laser feedback signal.

Abstract: A commercially attractive arrangement for monolithic integration of a nonlinear optical polymer transverse electro-optic device for high data rate optical signals on an electronic integrated circuit chip. The invention provides for conductive polymer sheet layers immediately adjacent to an optical signal transmitting nonlinear optical polymer core layer. Electrically passive polymer cladding layers are also provided adjacent to the conductive polymer sheet layers to achieve lower optical signal losses. The combination provides a reduced nonlinear optical polymer core layer poling voltage, reduced device length, and 5 VDC or less controlling voltage, allowing inclusion into electronic integrated circuit chips of a size compatible with multichip module integration.

Abstract: A commercially attractive arrangement for monolithic integration of a nonlinear optical polymer transverse electro-optic device on an electronic integrated circuit chip. The invention provides for conductive polymer cladding layers immediately adjacent to an optical signal transmitting nonlinear optical polymer core layer. The cladding layers result in a reduced core layer poling voltage, reduced device length, and 5 VDC or less controlling voltage, allowing inclusion into electronic integrated circuit chips of a size compatible with multichip module integration.

Abstract: A position tracker uses an inertial angular measurement system, for measuring orientation and linear translation of a helmet on a human head for the synthesis by a host computer of virtual, directional audio over headphones sensors mounted on the helmut, includes a roll gyro sensor, a pitch gyro sensor, a yaw gyro sensor, an absolute roll tilt sensor coupled to a first universal signal conditioner, an absolute pitch tilt sensor coupled to a second universal signal conditioner, and an absolute yaw compensator. A data acquisition system is coupled between the sensors and the host computer for converting analog signals from the sensors into digital, angular orientation data. Each of the gyro sensors includes angular velocity detectors and solid state electronic devices connected to provide angular velocity signals at a given sample rate.

Abstract: A multiresolution, multirate approach for detecting and following targets. The resolution of data obtained from a target scanning region is reduced spatially and temporally in order to provide to a tracker a reduced amount of data to calculate. Balances of computer processing resources with long-range detection and multiple target tracking are provided. Computer processing resources can be allocated to other systems while still maintaining an accurate tracking function and alternatively, the tracking function can receive a high level of computer processing resources and track at a finer resolution. An ability to recover raw data points from the spatially and temporally reduced values is also provided.

Abstract: A practical, low-energy consumption method of performing an N-point fast rier transform employing mathematically justified manipulation of input data, multirate, parallel and asynchronous circuit techniques. The multirate feature allows an input data sequence to be broken down into its polyphase components. The polyphase components can then be operated upon in a local and parallel manner. Localizing and minimizing loads of a circuit allows operations to be performed only when necessary in an asynchronous manner. The energy consumed in performing an N-point fast Fourier transform of the present invention is less than half that of known systems employing global memory and clocked methodologies. The feature of low energy consumption makes the invention attractive for use in hand-held audio/video devices where energy requirements can be met with a low rate of battery replacement.

Abstract: The present invention is a calibration system that allows one person to perform multiple end-to-end calibrations of a structural dynamic measurement system including mounted transducers, signal conditioning and recorder. Only one person is needed to operate the system at the recorder. The system stimulates structural measurement transducers contained inside of structures using remotely controlled exciters with a measurable acceleration level and the data measured by the transducers is communicated to a recorder.

Abstract: An antenna test body for providing azimuth and elevation rotation having a rotating cylinder contained within said test body and an arc sector under the test body capable of providing elevation rotation. The test body provides a phase stationary center point under rotation of both azimuth and elevation.

Abstract: An apparatus and method for providing small size, high gain corner reflection of radio frequency signals for use in military and commercial applications. Conventional corner reflector practice is combined with electronic amplifying reflection devices such as the superregenerative amplifier to provide an array of antennas and amplifiers spread over each planar surface of a corner reflector. The specific antenna used may be selected from a plurality of various antenna types depending on the application. As in a conventional corner reflector, the amplified signal is reflected at the same angle and in the opposite direction of the incident signal.

Abstract: Apparatus to actively assist neuromotor disabled to have better leg functional control/use. This system serves as a strength enhancer, support device, and attenuator of spastic motions. The disclosed orthosis is worn on the outside of the leg (or legs) and serves as an active/dynamic brace to prevent leg spasms and other untoward leg motion. It is made of lightweight material such as fiberglass or aluminum and is actuated by pneumatic gas sources which are small, portable, and carried with the device. The device is totally self contained and has no external connection. The system has applicability to patients such as: stroke (cerebral vascular accident), TBI (traumatic brain injury), Muscular Dystrophy, and some spinal cord injured.

Abstract: A clearance control arrangement for the rotor blade-to-stator shroud clearance in an aircraft engine or other turbo machine. The disclosed arrangements use large area piston-like structures located circumferential to the turbo machine and capable of operation from pressures developed within the machine. One disclosed arrangement incorporates static adjustment capability that can be disposed to provide symmetrical or asymmetrical clearances. The disclosed clearance control can be used as a fast-acting supplement or in lieu of other clearance control arrangements and is arranged to be actuated upon sensing the onset of rotor-to-stator collision pinch point conditions in the turbo machine.