Abstract: A global navigation satellite system (GNSS) spoofing detection and classification technique is provided. An optimization problem is formulated at the baseband correlator domain by using an optimization algorithm such as the Least Absolute Shrinkage and Selection Operator (LASSO) algorithm, for example. A model of correlator tap outputs of the intended received signal is created to form a dictionary of pre-computed waveform functions (e.g., triangle-like-shaped functions). Sparse signal processing can be leveraged to choose a decomposition of pre-computed waveform functions from the dictionary. The optimal solution of this minimization problem can discriminate the presence of a potential spoofing attack peak by observing the decomposition of two different code-phase values (authentic and spoofed) in a sparse vector output. A threshold can be used to mitigate false alarms. Furthermore, a variation of the minimization problem can be provided that enhances the dictionary to a higher resolution.

Abstract: Disclosed are various embodiments that enable the identification of the location of a computing device based on radio data. A radio map can be identified for an area. The computing device can measure signal strengths to reference points. The signal strengths can be compared to the radio map. The computing device can determine its location based on the comparison of the signal strengths to the radio map.

Abstract: A system and method are provided for detecting and estimating time synchronization attacks (TSAs) on Global Positioning System (GPS) receivers. The system and method can be implemented to address gaps in the known or proposed TSA detection solutions. In particular, the system and method can be implemented to provide a TSA countermeasure solution that: 1) provides a comprehensive countermeasure against different types of TSAs; 2) allows the GPS receiver to continue its normal operation, which is especially beneficial in Phasor Measurement Unit (PMU) applications where the network's normal operation cannot be interrupted; in other words, the solution not only detects TSAs, but also mitigates their effects so that the network can continue its normal operation; and 3) is relatively simple and capable of being integrated with current GPS receivers without having to alter the circuitry of the GSP receivers.

Abstract: Disclosed are various embodiments that relates to executing a sequence of messaging nodes, where the messaging sequence is defined by user-defined local triggering conditional expressions for each messaging node, and supporting proper data organization and links that integrate individual message instances in a protocol flow.

Abstract: Disclosed are various embodiments that enable the identification of the location of a computing device based on radio data. A radio map can be identified for an area. The computing device can measure signal strengths to reference points. The signal strengths can be compared to the radio map. The computing device can determine its location based on the comparison of the signal strengths to the radio map.

Abstract: Disclosed are various embodiments that enable the identification of the location of a computing device based on radio data. A radio map can be identified for an area. The computing device can measure signal strengths to reference points. The signal strengths can be compared to the radio map. The computing device can determine its location based on the comparison of the signal strengths to the radio map.

Abstract: Disclosed are various embodiments for a system and method of measuring and characterizing a PLC communication network comprising transmitting a plurality of packets from a PLC master device to a PLC terminal device via a PLC communication network, measuring a plurality of round-trip time (RTT) timestamps for the plurality of packets in the PLC master device, determining an observed probability density function based on the plurality of RTT timestamps, approximating a plurality of probability density functions, determining a rating for the probability density functions based on a comparison of the probability density functions to the observed probability density function, characterizing the PLC communication network based on the ratings of the plurality of probability density functions, and scheduling subsequent transmissions based on the characterization of the PLC Communication network.

Abstract: A system and method are provided for detecting and estimating time synchronization attacks (TSAs) on Global Positioning System (GPS) receivers. The system and method can be implemented to address gaps in the known or proposed TSA detection solutions. In particular, the system and method can be implemented to provide a TSA countermeasure solution that: 1) provides a comprehensive countermeasure against different types of TSAs; 2) allows the GPS receiver to continue its normal operation, which is especially beneficial in Phasor Measurement Unit (PMU) applications where the network's normal operation cannot be interrupted; in other words, the solution not only detects TSAs, but also mitigates their effects so that the network can continue its normal operation; and 3) is relatively simple and capable of being integrated with current GPS receivers without having to alter the circuitry of the GSP receivers.

Abstract: Disclosed are various embodiments that enable the identification of the location of a computing device based on radio data. A radio map can be identified for an area. The computing device can measure signal strengths to reference points. The signal strengths can be compared to the radio map. The computing device can determine its location based on the comparison of the signal strengths to the radio map.

Abstract: Disclosed are various embodiments that relates to executing a sequence of messaging nodes, where the messaging sequence is defined by user-defined local triggering conditional expressions for each messaging node, and supporting proper data organization and links that integrate individual message instances in a protocol flow.

Abstract: Disclosed are various embodiments for a system and method of measuring and characterizing a PLC communication network comprising transmitting a plurality of packets from a PLC master device to a PLC terminal device via a PLC communication network, measuring a plurality of round-trip time (RTT) timestamps for the plurality of packets in the PLC master device, determining an observed probability density function based on the plurality of RTT timestamps, approximating a plurality of probability density functions, determining a rating for the probability density functions based on a comparison of the probability density functions to the observed probability density function, characterizing the PLC communication network based on the ratings of the plurality of probability density functions, and scheduling subsequent transmissions based on the characterization of the PLC Communication network.

Abstract: A remote laboratory gateway enables a plurality of students to access and control a laboratory experiment remotely. Access is provided by an experimentation gateway, which is configured to provide secure access to the experiment via a network-centric, web-enabled interface graphical user interface. Experimental hardware is directly controlled by an experiment controller, which is communicatively coupled to the experimentation gateway and which may be a software application, a standalone computing device, or a virtual machine hosted on the experimentation gateway. The remote laboratory of the present specification may be configured for a software-as-a-service business model.

Abstract: Disclosed herein are systems and methods for communication scanners, which utilize mobile-based platforms to facilitate the communications. In an embodiment, the mobile UAV based emergency communication scanner is comprised of an unmanned aerial vehicle (UAV), deployed sensor resources, mapping application and a big-data center. The present invention discloses a mobile UAV system that is configured to collect sensory data from the sensor resources deployed in embodiments of phones, GPS and other activity signals. The disclosed systems and methods improve upon emergency response systems where data collection may be limited and communication channels may not be available. The system and methods may be utilized in a multitude of ways, including but not limited to search and rescue operations.

Abstract: Provided is a method that includes dynamically adjusting a GPS signature code to minimize the interference (e.g., the cross-correlation interference) experienced due to one or more other GPS signals. Further provided is a method that includes adjusting the complexity of an adaptive solution to reduce the time and processing power associated with tracking a GPS signal.

Abstract: A remote laboratory gateway enables a plurality of students to access and control a laboratory experiment remotely. Access is provided by an experimentation gateway, which is configured to provide secure access to the experiment via a network-centric, web-enabled interface graphical user interface. Experimental hardware is directly controlled by an experiment controller, which is communicatively coupled to the experimentation gateway and which may be a software application, a standalone computing device, or a virtual machine hosted on the experimentation gateway. The remote laboratory of the present specification may be configured for a software-as-a-service business model.

Abstract: Methods and systems for securing digital imagery are provided. In one respect, embedding, compression, encryption, data hiding, and other imaging processing techniques and systems may be provided for digital image security. In one non-limiting example, a method for producing a compressed and encrypted image is provided. An image may be converted into a binary bit stream, and the bit stream may be decomposed into a plurality of segments. A binary sequence based on a first key may be generated and may be used to generate a code matrix. A distance between the code matrix and the distance may be determined for each of the plurality of segments. Using a combined first and second key, a compressed and encrypted image may be obtained.

Abstract: Methods and systems for securing digital imagery are provided. In one respect, embedding, compression, encryption, data hiding, and other imaging processing techniques and systems may be provided for digital image security. In one non-limiting example, a method for producing a compressed and encrypted image is provided. An image may be converted into a binary bit stream, and the bit stream may be decomposed into a plurality of segments. A binary sequence based on a first key may be generated and may be used to generate a code matrix. A distance between the code matrix and the distance may be determined for each of the plurality of segments. Using a combined first and second key, a compressed and encrypted image may be obtained.

Abstract: Methods and systems for securing digital imagery are provided. In one respect, embedding, compression, encryption, data hiding, and other imaging processing techniques and systems may be provided for digital image security. In one non-limiting example, a method for producing a compressed and encrypted image is provided. An image may be converted into a binary bit stream, and the bit stream may be decomposed into a plurality of segments. A binary sequence based on a first key may be generated and may be used to generate a code matrix. A distance between the code matrix and the distance may be determined for each of the plurality of segments. Using a combined first and second key, a compressed and encrypted image may be obtained.

Abstract: In order to prevent an incorrect synchronization between a received code-modulated signal and an available replica code, partial correlations are performed between a respective subset of samples of the replica code and samples of the received code-modulated signal associated to the respective subset of samples of the replica code at a specific alignment between the received code-modulated signal and the replica code. The results of the partial correlations are then compared to each other, and it may be decided based on this comparison whether the replica code corresponds to a code employed for code-modulating the received code-modulated signal.