摘要:
An apparatus comprises a structure including a cavity that, when excited with electromagnetic energy, produces an electric field having randomized distribution of field amplitude and polarity. The apparatus further comprises a sensor within the cavity. The sensor has a plurality of antennas for wirelessly harvesting operating power along different paths within the cavity.
摘要:
A method and associated wireless monitor and data analysis system are provided. The method includes installing one or more of a plurality of wireless monitors at respective locations onboard a complex system on which a wireless system of interest is installed or planned for installation. The method may then include by the plurality of wireless monitors, emulating the wireless system of interest, and recording data related to performance of the wireless system of interest at one or more recorded times over a plurality of operating conditions of the complex system. The method may also include by the plurality of wireless monitors, collecting data including the respective locations of the wireless monitors correlated with respective recorded data and recorded times. In this regard, the collected data for the plurality of wireless monitors may be retrievable for analysis of the wireless system of interest based thereon.
摘要:
A method and associated wireless monitor and data analysis system are provided. The method includes installing one or more of a plurality of wireless monitors at respective locations onboard a complex system on which a wireless system of interest is installed or planned for installation. The method may then include by the plurality of wireless monitors, emulating the wireless system of interest, and recording data related to performance of the wireless system of interest at one or more recorded times over a plurality of operating conditions of the complex system. The method may also include by the plurality of wireless monitors, collecting data including the respective locations of the wireless monitors correlated with respective recorded data and recorded times. In this regard, the collected data for the plurality of wireless monitors may be retrievable for analysis of the wireless system of interest based thereon.
摘要:
An apparatus comprises a structure including a cavity that, when excited with electromagnetic energy, produces an electric field having randomized distribution of field amplitude and polarity. The apparatus further comprises a sensor within the cavity. The sensor has a plurality of antennas for wirelessly harvesting operating power along different paths within the cavity.
摘要:
A server includes a memory device configured to store a plurality of computer-executable instructions, and a processor coupled to the memory device. When the processor executes the plurality of computer-executable instructions, the processor is programmed to determine an available spectrum of frequencies within a location over time, and receive a request from a wireless device to access the available spectrum for a predefined duration. The processor is also programmed to select a frequency band within the spectrum that is available to be used by the wireless device for the predefined duration, and transmit an authorization message to the wireless device to use the selected frequency band.
摘要:
Methods and apparatus for use in identifying cyber-security threats for an aircraft are provided. The method includes storing parts information relating to each hardware and software component used on the aircraft in an aircraft parts database, receiving, by a computing device, a cyber-security threat, and determining, by the computing device, a threat is relevant to the aircraft by comparing the received threats to the stored parts information.
摘要:
A method is described for routing data from a first node to a second node via a gateway. The second node is detected at the gateway, which determines a local identifier of the second node. A name and a global address are associated with the second node. The name and the global address are published to a name service, such that the first node can retrieve the global address based on the name. The gateway receives data from the first node that is addressed to the global address and transmits the data to the second node using the local identifier. The gateway includes software implementing a service-oriented architecture (SOA). Any number of additional services may be added to process messages passing through the gateway.
摘要:
In one embodiment, a method to authenticate a claimant comprises receiving, from the claimant, at least one of a set of beam data from a spot beam transmission, comparing the claimed at least one set of beam data to a known valid data set, and authenticating the claimant when a difference between at least one set of beam data and the known valid data set is less than a threshold.
摘要:
A filter for high speed digital signal processing. In one embodiment the filter includes a linear, phase-B, interpolating cubic spline filter having a pre-filter section and an interpolating post-filter section. The pre-filter section may be formed to implement any one of a 1-4-1 cubic spline function, a 2-5-2 cubic spline function or a 1-2-1 cubic spline function. The post-filter may be formed using a plurality of running average filters arranged in a cascade (i.e., serial) fashion. The filter can be constructed using significantly fewer independent component parts for a given level of pass band and stop band performance criteria, as compared with a conventional finite impulse response (FIR) filter. The filter is thus ideally suited for implementation with very large scale integration (VLSI) technology, and in a wide variety of electronic devices where high speed digital filtering is required.
摘要:
An architecture and methods for extending the depth of a WLAN to a four-level hierarchal access point structure including wireless access points. The wireless access points in the WLAN can be networked by scanning for a network, collecting one or more packets that identify the network from one or more access points, each packet including an address identifying an ancestry of the access points to an ancestral wired access point; and applying an access point selection algorithm to configure a parent access point. The architecture includes a scanning object configured to issue a scan request to a network interface and collect access point data; a selection object configured to filter and sort the collected access point data; an authentication state machine configured to perform authentication and validate; and an association state machine configured to compose a packet including hierarchical data indicative of access point ancestry to a conventional access point.