Abstract: A system for calculating magnetic stray field data for current loop configurations. A graphical user interface utilizes multiple screens to define a current loop configuration, and prompt a user to select i) one of three orthogonal dipole directions in which the current loop configuration is aligned, ii) units of measure associated with the current loop configuration, and iii) one of a plurality of calculation scenarios. Calculation scenarios include i) current loop configuration defined by a single-size current loop, ii) current loop configuration defined by a non-uniform sized current loop, and current loop configuration defined as a single-size current loop and the user selects direction of simulated movement, start and stop positions along the movement direction and a step increment. A processor coupled to the graphipal user interface is programmed to perform magnetic stray field calculations for the selected calculation scenario. Calculations are displayed in graphical formats chosen by the user.

Abstract: A standoff delivery system is responsive to GPS coordinate signals and in-flight GPS signals to deploy a torpedo at a remote location that avoids the limitations and hazards attendant conventional deployment by full size aircraft. A gliding rigid winged unmanned aircraft carries the torpedo to a desired remote location. A GPS receiver on the aircraft enters GPS coordinate signals representative of the remote location and receives GPS signals representative of the location of the unmanned aircraft. A control signal generator produces control signals in response to both of the GPS signals and feeds control signals to servos that displace control surfaces to pilot the unmanned aircraft. The torpedo is released and descends via parachute in response to GPS signals that are representative of at least the proximity of the remote location. This system provides for clandestine deployment of a torpedo without exposing manned aircraft to danger.

Abstract: An iterative process to determine the wavelet function and combination of ales of the function which provides data where there is a large separability compared to the separability of the data set prior to processing. Wavelets are selected for inclusion in a library in accordance with predetermined criteria and then applied to a digitized signal by convolution to perform digital filtering. The convolution of each wavelet is performed for the number of times dictated by the coefficients of the wavelet for each of the input signal samples. Separability of the wavelet implemented digital filtration is calculated as a percentage for each wavelet. The separation data is stored in memory until the iterative process is applied to all wavelets. The separability data is then examined to identify the wavelet producing the greatest separation. The data separability is estimated using a likelihood ratio after the probability densities for each of two sets of profile data are estimated.

Abstract: An interferometric fiber optic gyroscope employing an integrated, width pshed, optic chip containing annealed proton exchange waveguides and a Mach-Zehnder interferometer for sensing a ramp induced signal from loop closing electronics to achieve a highly improved gyroscope scale factor linearity and dynamic range. An edge light emitting diode (ELED) operating at 1.3.mu. wavelength is employed as the light source in the gyroscope. A decorrelator optical fiber segment is employed between the light source and the chip, and a Lyot depolarizer optical fiber segment is employed between the chip and one side of the fiber optic coil. Also, an intermediate output of the loop closing electronics is shown to have reduced scale factor sensitivity to light source wavelength change.

Abstract: A digitally formed monopulse radar employing dynamic real-time calibration uring operation. The invention has a transmitter section, timing circuit, RF section, IF section, in-phase and quadrature section and a digital signal processor. A portion of the transmit signal is diverted from the transmitter section for preparation of calibration factors during the calibration period between receive signals. The calibration factors prepared by the digital signal processor are applied by the processor to antenna received signals during the receive mode and to produce the corrected sum and delta pitch, and delta yaw signals and the tracking errors .epsilon..sub.y and .epsilon..sub.p.