Abstract: A particular method includes splitting a signal into multiple portions corresponding to elements of an array. The method also includes coding and phase adjusting the multiple portions of the signal to form phase adjusted, coded portions of the signal by coding each portion of the multiple portions with a different code and by applying phase adjustments associated with the corresponding elements of the array to the portions. The method also includes transmitting the phase adjusted, coded portions of the signal via the corresponding elements of the array.

Abstract: A system, method, and apparatus for the authentication of the physical location of a target node are disclosed herein. In one or more embodiments, the authentication of the target node's physical location is achieved by using ping ranging measurements obtained from the amount of time that elapses during ping messages being sent between the target node and at least one trusted node with a known physical location. The physical location of the trusted node(s) is obtained by using satellite geolocation techniques. The accuracy of the ranging measurements may be improved upon by using pre-coordination and/or priority determination of the ping messages being sent between the target node and the trusted node(s). In at least one embodiment, the ping messages are sent by dedicated ping response hardware that is associated with the target node and/or the trusted node(s). In some embodiments, the ping messages include a pseudo random code bit sequence.

Abstract: A system, method, and apparatus for contextual-based virtual data boundaries are disclosed herein. In particular, the present disclosure relates to improvements in access control that work to restrict the accessibility of data based on assigning contextual data thresholds that create a virtual boundary. Specifically, the disclosed method involves assigning at least one threshold to at least one contextual criterion. The method further involves determining whether contextual information from the claimant meets at least one threshold to at least one contextual criterion. Also, the method involves authenticating the claimant, if the contextual information from the claimant meets at least one of the thresholds to at least one contextual criterion. Further, the method involves allowing the claimant access to the data, if the claimant is authenticated.

Abstract: A system and methods for location authentication are presented. An estimated server signal is estimated based on a generated known code signal, and a client received satellite signal is received from a client device. The client received satellite signal is compared to the estimated server signal to provide a comparison result.

Abstract: A system and methods for location-based authentication using medium earth orbit (MEO) and low earth orbit (LEO) satellites are presented. Location of a client device is authenticated based on at least one client received MEO satellite signal received from at least one MEO satellite at the client device and at least one client received LEO satellite signal received from at least one LEO satellite at the client device.

Abstract: A method, system, and apparatus are disclosed for multipath isolation through the combined use of antenna diversity and frequency diversity. In particular, the present disclosure utilizes antenna diversity and frequency diversity to combat the deleterious effects of reflected signals on the positioning accuracy of satellite navigation systems. In at least one embodiment, the present disclosure uses two antennas and two frequencies for operation with a satellite navigation system. The present disclosure segregates the antennas and frequencies into two classes: references and monitors. The reference measurements are used for estimating the state of the vehicle, and the monitor measurements are used to detect faults that might degrade the reference estimation. Thus, the present disclosure enables an improvement in the positioning error experienced by roving users in downtown and indoor environments.

Abstract: A system and methods for location authentication are presented. An estimated server signal is estimated based on a generated known code signal, and a client received satellite signal is received from a client device. The client received satellite signal is compared to the estimated server signal to provide a comparison result.

Abstract: A system and methods for location-based authentication using medium earth orbit (MEO) and low earth orbit (LEO) satellites are presented. Location of a client device is authenticated based on at least one client received MEO satellite signal received from at least one MEO satellite at the client device and at least one client received LEO satellite signal received from at least one LEO satellite at the client device.

Abstract: An automated lenticular photographic system includes an interface that permits a user to upload image files and image processing and printing equipment that is in communication with the interface for receiving the uploaded image files and processing the uploaded image files to create an interlaced print image file that is used to produce an interlaced print sheet containing interlaced print images. A pair of registration marks is formed on the interlaced print sheet outside of borders of the interlaced print images. The system also includes a processing station where the interlaced print sheet is aligned with a lenticular lens sheet with a registration system that detects whether the lenticular lens sheet is off-centered and skewed relative to the interlaced print sheet. The system also includes means for controllably adjusting the position of the lenticular lens sheet relative to the interlaced print sheet until proper registration between the lenticular lens sheet and the interlaced print sheet is achieved.

Abstract: A system and method for verifying and/or geolocating network nodes in a network in attenuated environments for cyber and network security applications are disclosed. The system involves an origination network node, a destination network node, and at least one router network node. The origination network node is configured for transmitting a data packet downstream to the destination network node through at least one router network node. The data packet contains a header portion and a payload data portion. At least one of the network nodes is an enabled network node. The enabled network node(s) is configured to verify any of the network nodes that are located upstream from the enabled network node(s) by analyzing the header portion and/or the payload data portion of the data packet.

Abstract: A system and methods for reducing navigation satellite receiver power usage are presented. A wireless signal is received at a portable electronic device in a signal environment. At signal characteristic of the wireless signal at the portable electronic device is measured in the signal environment. An estimated signal strength of the wireless signal in the signal environment is estimated based on the signal characteristic. The estimated signal strength is compared to an expected signal strength of the wireless signal to calculate an estimated signal-strength-change relative to the expected signal strength. A GNSS signal is tracked at the portable electronic device, if the estimated signal-strength-change indicates an expected GNSS signal attenuation is lower than a signal attenuation threshold.

Abstract: A system and methods for location authentication are presented. An estimated server signal is estimated based on a generated known code signal, and a client received satellite signal is received from a client device. The client received satellite signal is compared to the estimated server signal to provide a comparison result.

Abstract: A system and methods for location-based authentication using medium earth orbit (MEO) and low earth orbit (LEO) satellites are presented. Location of a client device is authenticated based on at least one client received MEO satellite signal received from at least one MEO satellite at the client device and at least one client received LEO satellite signal received from at least one LEO satellite at the client device.

Abstract: The different advantageous embodiments provide an apparatus and method comprising a substrate configured to increase an intensity of light at a desired wavelength. The substrate has a front side, a back side, and an outer edge. The substrate is configured to reflect the light received on the front side of the substrate. The substrate comprises ceramic. The substrate comprises a plurality of sections. The method and apparatus also comprise a material configured to attenuate the light passing between the plurality of sections. The material surrounds an edge of each section of the plurality of sections. The apparatus and method also comprise a cooling system configured to allow liquid nitrogen to be transmitted through the cooling system and receive heat generated in the substrate from the back side of the substrate.

Abstract: A method, system, and apparatus are disclosed for multipath isolation through the combined use of antenna diversity and frequency diversity. In particular, the present disclosure utilizes antenna diversity and frequency diversity to combat the deleterious effects of reflected signals on the positioning accuracy of satellite navigation systems. In at least one embodiment, the present disclosure uses two antennas and two frequencies for operation with a satellite navigation system. The present disclosure segregates the antennas and frequencies into two classes: references and monitors. The reference measurements are used for estimating the state of the vehicle, and the monitor measurements are used to detect faults that might degrade the reference estimation. Thus, the present disclosure enables an improvement in the positioning error experienced by roving users in downtown and indoor environments.

Abstract: A system for retrieving advertisements includes a client configured to receive content, the content including an identification tag identifying an advertisement type that is associated with the content, the advertisement type corresponding to an advertisement, and a browser associated with the client and configured to render the content, wherein the client uses the information in the identification tag to send a single request for an advertisement creative associated with the advertisement type.

Abstract: A system and method for verifying and/or geolocating network nodes in a network in attenuated environments for cyber and network security applications are disclosed. The system involves an origination network node, a destination network node, and at least one router network node. The origination network node is configured for transmitting a data packet downstream to the destination network node through at least one router network node. The data packet contains a header portion and a payload data portion. At least one of the network nodes is an enabled network node. The enabled network node(s) is configured to verify any of the network nodes that are located upstream from the enabled network node(s) by analyzing the header portion and/or the payload data portion of the data packet.

Abstract: A transmission-based authentication system and method to prevent an unauthorized claimant from tracking a signal are disclosed herein. In one or more embodiments, the method involves transmitting, from at least one transmission source, a plurality of authentication signals. The method further involves receiving, from at least one receiving source, a resultant signal that includes at least two of the authentication signals. Further, the method involves authenticating, with at least one authenticator device, at least one claimant by comparing properties of the resultant signal the claimant receives from the receiving source location(s) to expected properties of the resultant signal that the claimant should receive from the receiving source location(s). The properties that are compared are signal power, doppler shift, time of reception, and/or signal modulation. The transmission source(s) is employed in at least one satellite and/or at least one pseudo-satellite.

Abstract: System, methods, and devices for a self-sustaining differential corrections network that employs roving reference devices (RRDs) as reference stations for improving positioning, navigation, and timing (PN&T) solutions for other enabled local roving and/or stationary receiving devices (RDs) are disclosed herein. The disclosed differential correction system enhancement leverages RRDs enabled for a non-global positioning system (non-GPS), secondary PN&T signal to characterize local errors. These local errors are then used by local RDs in combination with a signal to calculate an improved PN&T estimate for the RDs.

Abstract: Various techniques are provided for obtaining a precise absolute time using a satellite system. In one example, a method of transferring precise absolute time from a satellite to a device includes receiving data from a messaging channel, wherein the data has a frame structure. The method also includes using the data to identify the satellite and a position of the satellite, correcting for signal time of flight using the satellite identity and the position, and using the data as a time reference to align a receiver clock to the frame structure. The method also includes, with the receiver clock aligned to the frame structure, receiving a precision time signal from the satellite, wherein the precision time signal comprises a periodic repeating code. The method also includes determining a timing phase of the code and using the timing phase to determine a precise absolute time.