Abstract:
Methods and systems for non-stationary image sensor frame registration include receiving a data capture from an image sensor in motion, spatially filtering at least one pixel intensity value within the data capture to create a spatially filtered image, predictively differencing a filtered pixel intensity value of the spatially filtered image from a predicted intensity value, and generating a predictively differenced image based on the predictive differencing.
Abstract:
A system and method for dynamically planning a network is presented. One method may begin by determining network parameters for connecting nodes to a network and decision variables associated with radios and/or nodes in the network. Constraints may be established to narrow possible values of the network parameters and/or the decision variables. The constraints may be based on one or more of: values associated with connecting a radio to a node in the network, values associated with connecting two nodes in the network together over a communication link, whether a node can connect to a GIG node and a flow balance in the GIG node. To find possible links in the network that are optimal, the method may minimize an equation based on the network parameters, constraints and decision variables to determine optimal communication links between pairs of nodes in the network, pairs of nodes and radios and/or pairs of radios.
Abstract:
In the method for generating blue laser light with high optical and electrical efficiency, wherein the improvement comprises the step of using a phosphate glass photonic crystal fiber rod as a gain medium.
Abstract:
A method for dismount detection in low-resolution UAV imagery, comprising providing an input image, processing a greyscale distribution of the input image, determining a rough classification in the input image based on the grayscale distribution, determining the optimal parameters based on the rough classification, estimating one or more potential dismount locations, applying an area filter to the one or more potential dismount locations, removing undesired locations from the one or more potential dismount locations, applying one or more secondary filters to the resulting one or more potential dismount locations, assigning a probability to the one or more potential dismount locations, and assessing desirability of the one or more potential dismount locations.
Abstract:
The present invention provides an improved coupling and improved alignment of top-coupled photonic chips. The present invention includes a method to package and align top-coupling photonic chips using a holographic grating coupler and V-groove placement comprising the steps of: preparing the photonic chip with grating couplers, preparing the fibers by polishing the ends, preparing the cap chip by defining V-grooves to complement the photonic chip, attaching the fibers to the V-block cap chip, and top-cladding the cap chip to the photonic chip. The present invention also includes the apparatus resulting from the aforementioned method.
Abstract:
A multi-band whip antenna having a 30 MHz to 2 GHz bandwidth and an L-band dipole has its coverage extended up to 6 GHz by eliminating nulls and reducing VSWR problems that are cured through the utilization of a sleeve over the feedpoint of the L-band antenna. Chokes in the form of sleeves are provided at either end of the L-band dipole to shorten the L-band antenna for preventing reverse polarity currents at the L-band antenna feedpoint, with the antenna further including the use of double shielded meanderline to provide improved performance between 410-512 MHz and in which a capacitance sleeve is added at the bottom of the L-band antenna to effectively elongate the antenna below the L-band to permit operation below 700 MHz.
Abstract:
A system and method for passing a fiber cable through a fiber connector is presented. A fiber connector includes an outer body and a series of flutes inside the outer body. The outer body forms an interior chamber that has a first opening and a second opening. The first opening allows a coolant to flow into the first opening and the first and second openings allow the fiber cable to pass through the first opening and the second opening and through the fiber connector. A series of flutes are attached to an inner surface of the outer body and extend into the interior chamber. The flutes are spaced apart from each other and extend from the inner surface toward the fiber cable but do not touch the fiber cable when no liquid is flowing in the fiber connector.
Abstract:
A miniaturized multi-sectioned, directional coupler using a multi-layer MMIC process, the coupler comprising, a monolithic microwave integrated circuit, having a central section with a relatively tight coupling, surrounded by sections of lighter coupling, the relatively tight coupling being comprised of a pair of spiral coupled lines, and the lighter coupling being comprised of meandered edge couple lines with capacitive loading of the lines in several places.
Abstract:
A system and method for optimally combining multi-path signals is presented. A first signal is received that traveled a first path from a transmitter to a receiving location and a second signal is received that traveled a different second path from the transmitter to the same receiving location. The paths are different so that the first and second signals contain the same signal data but the first signal has a first distortion that is different than a second distortion in the second signal. According to an objective function, the method adaptively generates a first weight value and a second weight value. The first and second weight values are applied to the respective first and second signals to produce respective first and second weighted signals. The first and second weighted signals are linearly combined producing a combined signal with a combined signal degradation.
Abstract:
A method for the reduction of noise in an image including identifying neighboring pixel values in pixels proximate to a subject pixel; comparing the neighboring pixel values to a preset tolerance range; using neighboring pixel values within the tolerance range to calculate a pixel intensity correction value; and applying the pixel intensity value to the subject pixel.