Abstract: A system and method for provisioning wireless devices such that they are only capable of accessing network services when in a specified location. A device surveys the current location of the device for existing base stations and stores a corresponding network environment profile. After the profile is stored, network services will only be provided to the device if the current network profile matches the stored profile.

Abstract: Systems and methods are provided for enabling communications over a wide area network and a local area network, wherein one or more computing devices may communicate with a wireless router over the local area network, and wherein the one or more computing devices may obtain access to the wide area network if authorized. Authorization of the one or more computing devices can be dependent upon discovery of the one or more computing devices, as well as a device type of the one or more computing devices. Authorization may also involve discovering a service being run or requested by the one or more computing devices, and determining whether the type of service being run or requested by the one or more computing devices is authorized by the wide area network.

Abstract: A dual band antenna having a directive element and a reflective element is disclosed. A first and second antennas are arranged substantially parallel to each other and spaced between approximately 0.5-0.8 times the wavelength of the first antenna. The dual band antenna provides high gain at the zenith and at the horizon and enable v variation in the antenna beam shape as well as a reduction in cross polarization.

Abstract: In accordance with one or more embodiments of the present invention, a quadrifilar helix antenna can be formed to accommodate multiple frequencies using a single microstrip feed system, illustratively comprising an infinite balun in combination with interspersed antenna conductors tuned for effective resonance at the desired frequencies around the single feed system. Accordingly, as an additional aspect, the present invention also combines the multiple frequency antenna elements and the single feed system into a unitary assembly of cylindrical geometry that is generally reduced in size, with the interspersed arrangement of the multiple (e.g., resonating) antenna conductors wrapped into a short cylindrical surface. Through the use of the single hybrid feed system and resonating antenna conductors for multiple frequencies, the need for complex feed networks having multiple circuits (hybrid circuits, transformers, etc.) is alleviated, while still maintaining acceptable levels of performance.

Abstract: A system and method for augmenting a GNSS/INS system by using a vision system is provided. The GNSS system generates GNSS location information and the INS system generates inertial location information. The vision system further generates vision system location information including horizon, plumb lines and distance traveled. The GNSS information, INS information and vision system are combined in a Kalman filter to produce improved location information.

Abstract: A camera image processing subsystem processes image data corresponding to observations taken through a lens of focal point f using a spherical pin-hole model that maps the image data through a perspective center of a pin-hole prospective plane located within the lens onto a model sphere that is a focal length f in diameter and has its center at the perspective center of the pin-hole prospective plane. The subsystem models systematic distortion as rotation about coordinate axis of the pin-hole prospective plane, and maps all of the data, over the entire field of view of the lens, to corresponding spherical coordinates.

Abstract: A navigation system for use with moving vehicles includes target points proximate to a rendezvous site located on a first moving vehicle. One or more transmitters broadcast target point positioning information. A navigation unit on a second moving vehicle utilizes a camera to capture images that include the target points or a detector system that emits one or more beams to the target points. The navigation unit determines the relative position and orientation of the rendezvous site at the second vehicle. The navigation unit utilizes the relative position and orientation and an absolute position and orientation of the rendezvous site calculated from the target position information and calculates an absolute position and orientation corresponding to the second vehicle. The navigation unit then initializes its component inertial subsystem using a local position and orientation that are based on the calculated absolute position and orientation of the second vehicle.

Abstract: A system for performing post processing of GNSS and INS measurement data and image data to provide highly accurate location information for a camera, an INS measurement unit or both performs first processing operations using the GNSS and INS measurement data, to determine position, velocity and attitude solutions. The system then analyzes the solutions to determine which measurement data provide sufficiently reliable solutions from which to determine the precise position, velocity and attitude of the camera, and thus, which measurement data do not provide sufficiently reliable solutions. The system and method then performs more time consuming and processing intensive processing operations using the measurement data and camera image data that are associated with solutions that are not sufficiently reliable.

Abstract: A GNSS receiver and antenna system transmits signals from an antenna structure to a remote GNSS receiver and includes a digital communications subsystem that utilizes a high speed digital communications conductor. The transmissions are digital signals that preserve GNSS satellite signal frequency and/or carrier and code phase information. The system may transmit digital signals corresponding to GNSS signals such as GPS, GLONAS, Galileo and Compass satellite signals. In addition, the system may transmit, over the same digital communications conductor in appropriately formatted digital signals, ranging signals from ground-based transmitters or other satellites, differential GNSS correction signals from beacons or base GPS receivers, and/or signals from transmitting or co-located sensors, such as inertial sensors, temperature sensors and so forth.

Abstract: The invention relates to a method for correcting a distortion in an aerial photograph caused by a flight movement in the forward direction. The aerial photograph is captured by a surface sensor, the sensor lines of which sensor are exposed at different, successive exposure times, so that each individual sensor line senses a strip of terrain of the terrain flow over at the different exposure times. A relative flight altitude above the strips of terrain captured by the respective sensor line is assigned to the individual sensor lines. Furthermore, a compensation factor is separately determined for each of the individual sensor lines, wherein the factor depends on an air speed of the flying object, a focal length of the aerial camera and the relative flight altitude assigned to the respective sensor line, and corrects the distortion in the aerial photograph for the lines based on the respective compensation factor.

Abstract: A system for determining precise position includes a chirp receiver that processes broadcast chirp signals in the frequency domain to distinguish direct path signals from multipath signals. The chirp receiver processes the received chirp signals, which consist of respective pulsed frequency sweeps, by combining a received chirp signal with a synchronized locally generated chirp signal and phase adjusting and concatenating the results over multiple sweeps, based on estimated clock phase errors and expected phase rotations of the direct path signals, to produce a sine wave. The phase adjustment and concatenation allows the use of longer Fast Fourier Transforms (FFTs) that, in turn, provide increased accuracy of frequency estimation and separate component signals that are very close in frequency.

Abstract: A system detects, identifies, and optically tracks a jammer by calculating position and velocity information associated with the jammer based on jamming signals received at one or more antennas, and utilizing the position and velocity information to control one or more cameras. The cameras capture a series of images that include the calculated location, the expected movement of the jammer, or both. The system analyzes the images to extract motion information associated with one or more objects identified in the images. The system utilizes the calculated position and velocity information and the extracted motion information to determine which of the identified object in the images is the jammer. Further, the jammer motion information extracted from the images may be utilized to update the calculated position and velocity information associated with the jammer, to improve the overall accuracy of the tracking of the jammer.

Abstract: Systems and methods are provided that allow a media streaming device to dynamically control the quality of service associated with streaming media content being presented to a user. To dynamically control the quality of service associated with the streaming media content, the local environment in which the media streaming device, and one or more downstream devices which may be configured to receive the streaming media content, if present, operate, is monitored. Feedback regarding the status of the local environment can be gleaned based on the monitoring, and based on the feedback, the quality of service associated with the streaming media content can be adjusted accordingly, or the streaming media content may be paused, altogether terminated, maintained, or initiated/re-initiated. To further refine the feedback, user behavior may also be monitored, which can be suggestive of a user's attentiveness to the streaming media content.

Abstract: A low-latency centralized RTK system utilizes an RTK server to perform matched updates using base station GNSS measurements from one or more base stations and GNSS measurements from one or more rovers, and the one or more rovers produce RTK solutions based on the results of the matched updates. The RTK server includes one or more processors that perform the matched updates and a transmitter that transmits at least the ambiguities to the rovers. The respective rovers, which have processing power that is sufficient to quickly calculate RTK baselines, utilize the received ambiguities, the base station GNSS measurements received from either the RTK server or the base stations, known base station positions and instantaneous GNSS measurements at the rovers to readily determine and update their RTK baselines and their precise positions.

Abstract: An anti-jamming subsystem for jamming signals originating along the horizon includes a two-dimensional horizontal array of antennas that effectively has a horizontal circular reception pattern for receiving signals originating along the horizon and a antenna that has a half hemispherical reception pattern and an upward looking view of the sky. The subsystem utilizes associated phase information to actively combine the signals received by the respective antennas in the array, to produce one or more anti-jamming signals with narrow beams in the directions of the jammers. The subsystem combines the anti-jamming signals with the signals received by the reference antenna, to produce signals for further processing in which the interference from the jamming signals originating along the horizon is minimized without adversely affecting the signals received by the reference antenna from at least higher elevation satellites.

Abstract: A compact, low profile dipole antenna assembly includes first and second linear radiating elements that form the positive and negative sides of the dipole antenna, and a balun that extends in parallel with the second radiating element, i.e., the negative side of the dipole antenna. The second radiating element is connected to ground at one end and is an open circuit at an opposite end. A main feed line, which is part of the balun, also connects to a common ground with the second radiating element. The balun and the connection to ground act as an impedance transformer, and the second radiating element acts as the negative side of the dipole antenna as well as a ground plane for the balun. The balun and the second radiating element share a volume with the second radiating element electrically shielding the balun, and the main feed probe connecting to ground within the shared volume.

Abstract: A Intelligent Mobile HotSpot (IMHS) comprises a wide area network radio interface configured to enable communications between a wide area network and the IMHS; a local area network radio interface configured to enable communications between the IMHS and a computing device; a power input configured to cause the IMHS to be powered on; memory configured to store instructions; and a processor coupled with memory, the instructions configured to cause the processor to perform the following in response to an activation of the power input: automatically establish a data connection with a base station associated with the wide area network over the wide area network, automatically establish a data connection with computing device over the local area network, and be in a ready state to route data packets from the computing device to the base station via the local area network data connection and the wide area network connection.

Abstract: A system for performing post processing of GNSS and INS measurement data and image data to provide highly accurate location information for a camera, an INS measurement unit or both performs first processing operations using the GNSS and INS measurement data, to determine position, velocity and attitude solutions. The system then analyzes the solutions to determine which measurement data provide sufficiently reliable solutions from which to determine the precise position, velocity and attitude of the camera, and thus, which measurement data do not provide sufficiently reliable solutions. The system and method then performs more time consuming and processing intensive processing operations using the measurement data and camera image data that are associated with solutions that are not sufficiently reliable.

Abstract: A dual band antenna having a directive element and a reflective element is disclosed. A first and second antennas are arranged substantially parallel to each other and spaced between approximately 0.5-0.8 times the wavelength of the first antenna. The dual band antenna provides high gain at the zenith and at the horizon and enable v variation in the antenna beam shape as well as a reduction in cross polarization.

Abstract: A navigation system for use with moving vehicles includes target points proximate to a rendezvous site located on a first moving vehicle. One or more transmitters associated with the target points broadcast time-tagged target point positioning information. A navigation unit on a second moving vehicle utilizes a camera with known properties to capture images that include the target points. The navigation unit processes the image that corresponds in time to the positioning information, to determine the relative position and orientation of the rendezvous site at the second vehicle. The navigation unit utilizes the relative position and orientation and an absolute position and orientation of the rendezvous site calculated from the target position information and calculates an absolute position and orientation corresponding to the second vehicle.