Abstract: A method of generating an image of a volume ahead of an aerial vehicle is provided. The method comprises determining a position of the aerial vehicle and generating a terrain image corresponding to ground features correlated to the position of the aerial vehicle. Obstacle data pertaining to a set of obstacles ahead of the aerial vehicle is determined with a forward looking sensor. An obstacle overlay image is generated and overlain onto the terrain image to generate a composite image.

Abstract: Devices, methods, and systems for notifying a user of an event are described herein. One or more embodiments include a computing device for notifying a user of an event. The computing device includes a memory and a processor coupled to the memory. The processor is configured to execute executable instructions stored in the memory to determine a location of a user based on location information received from a personal device of the user, receive information regarding a predicted path or range of an event, determine, based on the location of the user and the information regarding the predicted path or range of the event, if the user is located within the predicted path or range of the event, and send a notification of the event to the user if the user is located within the predicted path or range of the event.

Abstract: Devices, methods, and systems for notifying a user of an event are described herein. One or more embodiments include a computing device for notifying a user of an event. The computing device includes a memory and a processor coupled to the memory. The processor is configured to execute executable instructions stored in the memory to determine a location of a user based on location information received from a personal device of the user, receive information regarding a predicted path or range of an event, determine, based on the location of the user and the information regarding the predicted path or range of the event, if the user is located within the predicted path or range of the event, and send a notification of the event to the user if the user is located within the predicted path or range of the event.

Abstract: Devices, methods, and systems for building monitoring are described herein. One or more embodiments include a first transceiver coupled to a first phase of a power system of a building and configured to receive and send data over the first phase of the power system, a second transceiver coupled to a second phase of the power system and configured to receive and send data over the second phase of the power system, and a switch coupled to the first and second transceivers of the power system and configured to route data between the first and second transceivers of the power system.

Abstract: A radio frequency system for broadband wireless communication including one or more dispersive antennae operable to transmit and receive wireless broadband signals having a wide range of frequencies and one or more equalizers each in communication with a respective dispersive antenna and each operable to distort the broadband signals to reduce the dispersive effects of the respective antenna.

Abstract: A system includes a first accelerometer and a second accelerometer that are coupled to a processor. The processor is configured to receive input from the accelerometers, calculate a displacement of the first accelerometer and a displacement of the second accelerometer, and refresh a video display unit as a function of the displacement of the first accelerometer and the displacement of the second accelerometer.

Abstract: A method of improving noise immunity in a signal is provided. The method comprises receiving a multi-bit symbol comprised of pulses and absences of pulses, incrementing a correlation count if a pulse is present when a pulse is expected, and decrementing the correlation count if a pulse is present when a pulse is not expected.

Abstract: A method of generating an image of a volume ahead of an aerial vehicle is provided. The method comprises determining a position of the aerial vehicle and generating a terrain image corresponding to ground features correlated to the position of the aerial vehicle. Obstacle data pertaining to a set of obstacles ahead of the aerial vehicle is determined with a forward looking sensor. An obstacle overlay image is generated and overlain onto the terrain image to generate a composite image.

Abstract: A navigation system having a radar altimeter is disclosed. The navigation system comprises a signal processing unit and one or more antennas in operative communication with the radar altimeter and the signal processing unit. The system further comprises a forward looking radar communicatively coupled to the radar altimeter. The forward looking radar and the signal processing unit are configured to provide forward looking radar measurements, radar altitude measurements from the radar altimeter, and datalink communications within a single forward looking radar scanning sequence.

Abstract: An apparatus for remote detection or neutralization of an explosively formed penetrator device. A LIDAR or LADAR unit may be used in conjunction with a RADAR unit to both detect the presence of an EFP and neutralize the EFP having an associated passive infrared sensor. The LIDAR unit's wavelength is selected to approximate the signature from the intended EFP target which then causes the safe remote detonation of the EFP. The detected EFP signature may be compared with known signatures and presented to a user via a display terminal. The display terminal may also present associated terrain or GPS data.

Abstract: An antenna for a micro air vehicle (MAV) takes the form of a wrap-around antenna (e.g., wrapped around a portion of the MAV) that selectively emits radio signals in different directions depending on a frequency selected by a radio altimeter in the MAV. The radar altimeter may be a pulsed or a frequency modulated continuous wave (FMCW) radar altimeter. The wrap-around antenna includes groups of radiating elements in which at least each group includes an average height that is different from an average height of an adjacent group. Further, the average height of the group determines which group will emit the signals most efficiently so that a desired sector of space may be covered by the signals emitted from the antenna. In one example, the center frequency of the radar altimeter may be controlled in a deterministic manner to cause the radiating elements to successively cover desired sectors of space.

Abstract: An airborne wind profiler for an aloft aircraft includes a system bus for receiving a GPS signal including a time and position solution and an attitude signal representing heading, roll, pitch, and yaw of the aircraft. An optical module includes at least one laser Doppler velocimer including an mount allowing the at least one laser Doppler velocimeter to articulate in at least two axes, thereby to orient the laser Doppler velocimeter below a horizon to generate at least one first velocimeter signal. The velocimeter signal includes at least one first radial velocity of a first wind-borne aerosol and a first orientation of the at least one laser Doppler velocimeter relative to the aircraft. A processor module receives the first velocimer signal at the time from at least one laser Doppler velocimeter.

Abstract: A platform for a handheld wind profiler includes a housing containing a three-axis magnetic compass module generating a compass signal, including the orientation of the housing relative to magnetic north at a time. A two-axis inclinometer module generates a inclinometer signal including the orientation of the housing relative to a horizontal plane at the time. A GPS module generating a GPS signal indicating a time and position solution including a terrain position of the housing based upon the time. A processor receives a first velocimeter signal at the time from at least one laser Doppler velocimeter. The velocimeter signal includes a first radial velocity of a first wind-borne aerosol and a first orientation of the at least one laser Doppler velocimeter relative to the housing. The processor resolves the first velocimeter signal to determine an orientation of the at least one laser Doppler velocimeter relative to the terrain position.

Abstract: A navigation system having a radar altimeter is disclosed. The navigation system comprises a signal processing unit and one or more antennas in operative communication with the radar altimeter and the signal processing unit. The system further comprises a forward looking radar communicatively coupled to the radar altimeter. The forward looking radar and the signal processing unit are configured to provide forward looking radar measurements, radar altitude measurements from the radar altimeter, and datalink communications within a single forward looking radar scanning sequence.

Abstract: An antenna for a micro air vehicle (MAV) takes the form of a wrap-around antenna (e.g., wrapped around a portion of the MAV) that selectively emits radio signals in different directions depending on a frequency selected by a radio altimeter in the MAV. The radar altimeter may be a pulsed or a frequency modulated continuous wave (FMCW) radar altimeter. The wrap-around antenna includes groups of radiating elements in which at least each group includes an average height that is different from an average height of an adjacent group. Further, the average height of the group determines which group will emit the signals most efficiently so that a desired sector of space may be covered by the signals emitted from the antenna. In one example, the center frequency of the radar altimeter may be controlled in a deterministic manner to cause the radiating elements to successively cover desired sectors of space.

Abstract: A navigation system to aid in the navigation through an unknown area. The navigation system includes a plurality of radio frequency identification (RFID) tags, at least one a portal terminal and at least one navigation device. The plurality of RFID tags are positioned throughout an area to be traversed. The at least one portal terminal is located near an entrance to the area to be traversed. The at least one portal terminal is adapted to upload a map of the area to be traversed. The map includes the location of each RFID tag. The at least one navigation device is adapted to download the map from the portal terminal. The at least one navigational device is further adapted to display its location in the area to be traversed based at least in part on the detection of one or more of the plurality of RFID tags.

Abstract: An RFID tag has a memory, an RF transceiver that supports long range RF communications with a long range reader, and an interface that supports short range communications with a short range reader over a secure link. The RF transceiver can be used to transmit an ID stored in the memory of the tag to a long range reader, and the interface can be used to transmit sensitive history information to a short range reader over the secure link. The ID uniquely identifies an article to which the tag is attached, and the history information provides environmental data, and/or maintenance data, and/or shipping data, and/or inventory data, and/or production data, etc. about the article.

Abstract: A method of testing the electrical functionality of an optically controlled switch in a reconfigurable antenna is provided. The method includes configuring one or more conductive paths between one or more feed points and one or more test point with switches in the reconfigurable antenna. Applying one or more test signals to the one or more feed points. Monitoring the one or more test points in response to the one or more test signals and determining the functionality of the switch based upon the monitoring of the one or more test points.

Abstract: A method of configuring a reconfigurable antenna is disclosed. The method selects an antenna configuration pattern based on previously identified antenna configuration patterns where the previously identified antenna configuration patterns have known signal beam pattern characteristics. The method applies reconfigurable antenna steering patterns based on the selected configuration pattern to configure a reconfigurable antenna.

Abstract: A method of verifying programmable antenna configurations is disclosed. The method comprises selecting a desired antenna configuration from a plurality of antenna configuration patterns, with the selected antenna configuration forming at least one reconfigurable antenna from reconfigurable antenna array elements. The method validates the formation of the selected antenna configuration to determine antenna performance of the at least one reconfigurable antenna.