L3Harris Technologies, Inc.

A planar transformer including first and second parts of a core with least one of the first and second parts having a center post that resides in an aperture of a PWB. The PWB includes primary windings and secondary windings that surround the center post, are magnetically coupled by the core, and are electrically independent. Separating an uppermost winding from the first part of the core is a first prepreg structure and separating a lowermost winding from the second part of the core is a second prepreg structure. There being no windings disposed between the first and second prepreg structures and the core. This planar transformer structure inhibits the windings from electrically shorting through the core when the planar transformer is subjected to shock or vibration. One variant includes the use of pre-form adhesives sheets located between the solder mask layers of the PWB and the core.

An image intensifier assembly has an image intensifier tube having a optical element. The optical element includes a emitting surface. The optical element comprises an outer dimension. The image intensifier assembly further includes a first power supply comprising a first circuit board having a first inner dimension defining an opening, a first outer dimension and a first thickness. The first inner dimension surrounds the outer dimension of the optical element. The first outer dimension is within the image intensifier assembly. The first circuit board further includes a component surface. The component surface extends from the first inner dimension to the first outer dimension. The first circuit board has power supply components mounted on the component surface.

A photocathode. The photocathode includes an absorber. The absorber a p-type bulk active layer and a plurality of nanostructures formed on the p-type bulk active layer. The Photocathode further includes the plurality of nanostructures, such that the plurality of nanostructures are formed at a band bending region between the bulk active layer and the vacuum.

An optical device. The optical device includes an underlying device that is sensitive to input light, and provides output light in a first spectrum based on absorbing the input light. The optical device further includes a stacked device, formed in an active area of a single semiconductor chip, coupled in an overlapping fashion to the underlying device. The stacked device includes first and second zones. Each zone has a plurality of active elements having a particular lateral size, where the lateral size is different for each zone. Each zone also has a plurality of transparent regions formed in the stacked device which are transparent to the light in the first spectrum to allow light in the first spectrum to pass through from the underlying device. The transparent regions are configured in size and shape to cause each zone to have a particular transmission efficiency for light in the first spectrum.

Disclosed is a method including: determining a location of each of a plurality of cellular base stations; receiving, at a vehicle, a first signal transmitted by a first cellular base station; receiving a second signal transmitted by a second cellular base station; determining a first angle of arrival of the first signal and a second angle of arrival of the second signal; demodulating the first signal to determine a first identity of the first cellular base station; demodulating the second signal to determine a second identity of the second cellular base station; determining a first location of the first cellular base station based on the first identity; determining a second location of the second cellular base station based on the second identity; and determining a position and velocity of the vehicle from the first location, the first angle of arrival, the second location and the second angle of arrival.

One example illustrated herein includes an optical device including a bridge assembly configured to connect two or more monocular tube assemblies and at least two monocular tube assemblies. Each monocular tube assembly includes a housing, an alignment member attached to the housing, the alignment member providing an indication of an optical axis of the monocular tube assembly, and an interface component that links the housing to the bridge assembly, the interface component comprising an adjustment mechanism that enables adjustment of the monocular tube assembly relative to the bridge assembly, such that the adjustment mechanism can be used in conjunction with the alignment member to align different optical axes. Aspects of the present disclosure may be implemented to allow for field-alignment of the optical device.

An electronic filter for filtering multiple signals including a signal of interest and an other spectral content induces a desired frequency selective limiter response with activator signals. The activator signals have an approximately 180-degree phase difference and effectively cancel in a final combiner, leaving only the desired filter response.

An embodiment provides convergent tracking for Global Navigation Satellite System (GNSS) signals (e.g., binary offset carrier (BOC), etc.) in GNSS applications, such as positioning, navigation, timing, and guidance. The embodiment employs a situation-aware two-dimensional (2D) routing algorithm that provides fast convergence to stable tracking. Further, an embodiment may provide subcarrier phase ambiguity resolution that resolves carrier phase with assurance to support high integrity navigation, including high integrity real-time kinematic (RTK) applications. Moreover, an embodiment may provide tracking to more accurate subcarrier phase estimates. This may provide up to four times better ranging accuracy. Accordingly, an embodiment provides robust tracking performance of BOC signals under varying levels of dynamics, high jamming tolerance, more ranging accuracy, support for high integrity navigation, and support for high integrity RTK based positioning and high precision navigation and automatic landing.

A multipoint relay (MPR) wireless network may include spaced apart nodes, with each node including wireless transceiver circuitry, beacon circuitry, and a controller coupled to the wireless transceiver circuitry and beacon circuitry. The controllers may be configured to operate the beacon circuitry to determine a respective link strength metric for each potential link between nodes, assign a set of nodes from among the plurality of nodes to function as gateway nodes and assign other individual nodes to communicate via respective gateway nodes based upon the respective link strength metrics to define the MPR network so that one-hop links have a strongest link strength metric, and operate the wireless transceiver circuitry for communications over the MPR network.

Direction-finding antenna arrays are positioned adjacent the interior surface of one or more aircraft fuselage windows. Such positioning may be means of a frame or other structure that is non-intrusively positioned on the fuselage interior wall adjacent the window and to which the antenna array is secured. Alternatively, a movable floor-supported installation fixture is selectively movable into position relative to fuselage windows and supports one or more antenna arrays adjacent those windows.