Abstract:
A system for facilitating radio communication using targeting devices is disclosed. In one embodiment, the targeting device includes a wireless microphone. The wireless microphone is wirelessly connected to a communication device. Further, the targeting device includes an activation button to activate the communication device. In this embodiment, the wireless microphone transmits an audio signal to the communication device upon activating the communication device.
Abstract:
The present invention provides an apparatus and method for adjusting an inter-pupil distance between eyepieces associated with a pair of telescopic elements in a viewing system with each of the telescopic elements having a corresponding rectilinear focal plane array at the focal plane thereof. The apparatus includes a mechanical drive for moving the focal plane arrays associated with the telescopic elements, wherein the inter-pupil distance is adjusted without skewing an orientation of the focal plane arrays, wherein distortion associated with inter-pupil distance adjustment is eliminated.
Abstract:
An apparatus for cooling electronic devices to be used in the vacuum of space is described. a window frame is provided as packaging for an electronic device having a substrate and a chip. The window frame includes an opening to allow a heat pipe to be in direct contact with a backside of the chip. The window frame is hermetically sealed to the backside of the chip. The window frame is also welded to a kovar ring located on the backside of the chip to provide a hermetic seal between the window frame and the substrate.
Abstract:
Methods and systems for correcting non-uniformity in focal plane arrays include averaging pixel intensity values from a plurality of data captures to generate an image, spatially median filtering the image to generate a median filtered image, temporally stacking the median filtered image with at least one previously median filtered images to generate a median filtered image stack, and temporally median filtering a pixel offset value stack corresponding to each of a plurality of filtered pixel locations within the median filtered image stack to generate a process dataset.
Abstract:
Frequency divider techniques are disclosed which can be used to address two problems: when an incorrect division occurs if the modulus control changes before the divide cycle is complete, and when an incorrect division occurs due to a boundary crossing (e.g., power-of-2 boundary crossing in a fractional-N PLL application). In one embodiment, a frequency divider is provided comprising a plurality of flip-flops operatively coupled to carry out division of an input frequency, and configured to generate a modulus output and receive a divided clock signal of a previous cell. An additional flip-flop is selectively clocked off one of the modulus output or the divided clock of the previous stage, depending at least in part on a Skip control signal applied to a data input of the additional flip-flop, and is further configured to selectively reset the plurality of flip-flops to a state that will result in a correct divide ratio.
Abstract:
The present invention is a method for constructing a knowledgebase that can provide analysis and trend prediction of emerging technologies. Metadata and full text are gathered from collections of documents, which can include more than 10 million documents, and are used to build a heterogeneous network of elements related to themes such as technical emergence. Indicators and models are selected that identify network characteristics and trends of interest. The indicators can be derived by applying a combination of citation analyses, natural language processing, entity disambiguation, organization classification, and time series analyses. A metric can be used to evaluate indicator utility. A framework can be sued to generate and validate the indicators. The models can be derived using an automated process. Upon receipt of a query, the indicators and models can be used to apply a scoring process to extracted features to predict a future prominence of an entity.
Abstract:
A system includes a way of improving an image obscured by airborne particles. The system includes a decomposition processor and an image generation processor. The decomposition processor decomposes an object of interest moving in a first image at a first rate of speed into at least one first subspace vector. This decomposition processor also decomposes fine particles moving at a different rate of speed than the object in the first image into at least one second subspace vector. The fine particles obscure the object of interest in a second image. The image generation processor generates based, at least in part on the first subspace vector and the second subspace vector, an image of the object without some of the fine particles obscuring the object of interest.
Abstract:
In some embodiments, authentication, confidentiality, and privacy are enhanced for a wireless network of cognitive radios by encryption of network management and control messages as well as data traffic, thereby protecting information pertaining to node identification, node location, node-sensed incumbent transmissions, CRN frequency channel selections, and such like. During initial network registration, a temporary ID can be issued to a node, and then replaced once encrypted communication has been established. This prevents association of initial, clear-text messages with later encrypted transmissions. Elliptic curve cryptography can be used for mutual authentication between subscribers and the base station. ECC-based implicit digital certificates can be embedded in co-existence beacons used by CRN nodes to coordinate use of frequency channels, thereby preventing denial of service attacks due to transmitting of falsified beacons. Similar certificates can be embedded within identity beacons used to protect certain incumbents from interference by the CRN.
Abstract:
Enhanced stability for infrared countermeasure systems is provided by using a pair of single axis rate sensors having orthogonal active axes, preferably aligned with the elevation axis and the azimuth axis of the gimbal. The outputs of the orthogonal single axis rate sensors are used to detect instantaneous aircraft angular movement and to use the detected movement to drive the elevation and azimuth motors of the gimbal to move the output mirror for the gimbal to cancel the detected movement.
Abstract:
A system for providing situational awareness outside a temporary incident area network includes a prioritized connection module for connecting a mesh network at the incident area to one of a plurality of available communications channels, with the selection based not only on the availability of a communications channel but also on the associated expense, speed, reliability or bandwidth, so that high bandwidth traffic such as video and pictures can be reliably sent from the incident area to a location outside of the incident area. In one embodiment switching to a satellite phone network bypasses problems with terrestrial networks such as cell phone networks and landlines which may be down.