Abstract: A wayfinding system, device, and method for providing a route between waypoints within a facility. The method includes generating a navigation graph of traversable areas connecting a set of waypoints; determining a shortest traversable path between each waypoint and every other waypoint based on the navigation graph; setting one or more requirements for plotting a route traversing the set of waypoints; and plotting the route traversing the set of waypoints, wherein the route is plotted according to the one or more requirements.

Abstract: Systems and methods for providing indoor navigation to emergency services are disclosed. The methods involve storing at least one electronic map of a facility and at least one annotation for the at least one electronic map. The at least one annotation can be representative of a service resource within the facility. The method also involves receiving a traversed area from at least one computing device within the facility during an event; determining a total traversed area based on the traversed area from each of the at least one computing device during the event; and providing the at least one annotation and the total traversed area within the at least one electronic map to be displayed on at least one graphical user interface.

Abstract: A method and apparatus uses a VLF transmitter, a VLF receiver, and/or a low earth orbit satellite including a rocket engine. A VLF wave transmitted into space is converted to an ambient wave. The ambient wave acts as a signal wave for a whistler traveling wave parametric amplifier. Rocket exhaust is generated in atmospheric plasma. The rocket exhaust includes kinetic energy acting as a Lower Hybrid wave source. The Lower Hybrid wave source produces a Lower Hybrid wave, which acts as a pump wave for the parametric amplifier. Nonlinear mixing of the signal wave and the pump wave in the atmospheric plasma simultaneously parametrically amplifies the ambient wave and generates an idler wave and a parametrically amplified wave. The parametrically amplified wave (1) reduces the density of energetic protons or killer electrons in the Van Allen radiation belt, and (2) improves communications between the VLF transmitter and VLF receiver.

Abstract: Computer-implemented systems and methods for geometry simplification and filtering are provided. The systems and methods may provide for automated simplification and filtering of visually complex architectural diagrams to their most important features, as may be desirable for creating maps that are true to real world instantiations. The method may use a conditional generative adversarial network (cGAN) that may be particularly well suited to identifying geometry in feature-poor architectural drawings.

Abstract: A wayfinding system, device, and method for providing a route between waypoints within a facility. The method includes generating a navigation graph of traversable areas connecting a set of waypoints; determining a shortest traversable path between each waypoint and every other waypoint based on the navigation graph; setting one or more requirements for plotting a route traversing the set of waypoints; and plotting the route traversing the set of waypoints, wherein the route is plotted according to the one or more requirements.

Abstract: Systems and methods for providing indoor navigation to emergency services are disclosed. The methods involve storing at least one electronic map of a facility and at least one annotation for the at least one electronic map. The at least one annotation can be representative of a service resource within the facility. The method also involves receiving a traversed area from at least one computing device within the facility during an event; determining a total traversed area based on the traversed area from each of the at least one computing device during the event; and providing the at least one annotation and the total traversed area within the at least one electronic map to be displayed on at least one graphical user interface.

Abstract: Systems and methods for positioning and orienting a virtual camera relative to an electronic map are disclosed. The system includes a communication network, a wayfinding server, and one or more user devices. The wayfinding server includes a wayfinding storage unit for storing electronic maps. The wayfinding processor is configured for providing an electronic map to the user devices. Each user device includes a user processor operatively coupled to a user memory and is configured for: receiving the electronic map; determining a set of target objects within the electronic map; determining a desired orientation of the virtual camera; generating a point cloud collection; generating a rotation matrix; generating an oriented point cloud; generating a three-dimensional bounding shape; calculating a desired position and orientation for the virtual camera; and providing the electronic map having a view from the virtual camera at the desired position and orientation for display.

Abstract: An apparatus for interfering with and canceling electromagnetic reflections from a conducting object such as a solid or hollow conducting sphere. The reflection of an incident electromagnetic wave from a conducting sphere can be reduced or cancelled by placing a polyhedral conducting mesh (PCM) around the conducting sphere. The incident EM wave induces electric fields in the region between the conducting mesh and the internal conducting sphere. These induced electric fields may interfere with and in some cases may completely cancel the incident EM wave and thus reduce reflection. The PCM can be tuned to reduce or cancel reflection of incident EM waves at one or more specific frequencies.

Abstract: An apparatus for interfering with and canceling electromagnetic reflections from a conducting object such as a solid or hollow conducting sphere. The reflection of an incident electromagnetic wave from a conducting sphere can be reduced or cancelled by placing a polyhedral conducting mesh (PCM) around the conducting sphere. The incident EM wave induces electric fields in the region between the conducting mesh and the internal conducting sphere. These induced electric fields may interfere with and in some cases may completely cancel the incident EM wave and thus reduce reflection. The PCM can be tuned to reduce or cancel reflection of incident EM waves at one or more specific frequencies.

Abstract: A high frequency signal calibration target deployable in outer space includes an expandable and electrically conductive symmetric structure. The structure may mechanically expand from a stowed configuration to a deployed configuration. Scatter of high frequency signal off of a substantially symmetric signal calibration target may be measured to accurately calibrate systems using high frequency signals.

Abstract: An ultra-thin film electrode including at least one electrically conductive layer disposed upon an adhesive layer that is carried by a substrate.

Abstract: An ultra-thin film electrode including at least one electrically conductive layer disposed upon an adhesive layer that is carried by a substrate.

Abstract: A high frequency signal calibration target deployable in outer space includes an expandable and electrically conductive symmetric structure. The structure may mechanically expand from a stowed configuration to a deployed configuration. Scatter of high frequency signal off of a substantially symmetric signal calibration target may be measured to accurately calibrate systems using high frequency signals.

Abstract: An electric toothbrush is provided which includes an elongate body having an interior cavity, a power source mounted within the cavity, an elongate drive shaft driven rotatably by the power source, a camwheel mounted on the drive shaft, a yoke with projecting arms which confine travel of the camwheel, a crankshaft section driven by the drive shaft, an output shaft axially aligned to the drive shaft, and a collar with a guide track eccentrically coupling the crankshaft section to the output shaft thereby imparting both lateral and rotary reciprocating motion to the output shaft. A brushhead mounted on the front end of the elongate body accepts the motion from the output shaft. The mechanical drive system is fully enclosed within the housing of the elongate body. Brushheads are replaceably mountable outside the cavity on the front end.

Abstract: An improved RF beacon for use in space/earth communications and positioning determination provides better spectral purity and frequency stability. A power supply provides regulated voltage and control signals to the beacon. Each of two oscillators operate at a slightly different frequency very near the aforementioned 16.7 MHz. The slight difference provides for a frequency selection with respect to the transmitter frequency spectra. The oscillator provides a signal to a plurality of multiplier circuits. The resulting multiplied frequency signals are fed to respective amplifiers. Some of the features of the radio frequency beacon include redundant switchable oscillators, a 1067 MHz signal having data modulation capabilities, the ability to change power levels, improved frequency stability and temperature control characteristics, and a triplexer to optionally combine the three outputs into a single port.

Abstract: A rotational hyper-spectral imager is disclosed. The rotational hyper-spectral imager collects substantially all available photon flux emitted by an object being detected and analyzed and allows the rotational hyper-spectral imager to determine the composition of the objects. The rotational hyper-spectral imager is particularly suited to detect and analyze objects having weak illumination.