Abstract: A system, method, and device for analyzing a sample using spectroscopy. The system includes a spectroscope, a sample vial with a swab removably sealable within a transparent enclosure, the swab including an absorbent collection substrate. The system further includes a sample vial adaptor configured to affix to the spectroscope, and a sample vial receptacle that receives the sample vial. The adaptor is configured to position the sample vial such that the transparent portion of the enclosure is between the swab and the laser of the Raman instrument, and such that the swab is positioned at the focal distance of the laser.

Abstract: The present invention relates to methods and systems for electronic countermeasures, and particularly to methods and systems for electronic countermeasures that employ radar jamming devices.

Abstract: A method for obtaining sensor data about a remote target using one or more pre-existing sensors located in the vicinity of the remote target. The method includes the steps of identifying a remote target of interest, identifying one or more pre-existing target systems with one or more sensors located in the vicinity of the remote target, instructing the identified sensors to obtain sensor data and transmit the data over a communications network without detection, receiving the transmitted sensor data, and analyzing the received sensor data to create information about the remote target.

Abstract: A system, method, and device for analyzing a sample using spectroscopy. The system includes a spectroscope, a sample vial with a swab removably sealable within a transparent enclosure, the swab including an absorbent collection substrate. The system further includes a sample vial adaptor configured to affix to the spectroscope, and a sample vial receptacle that receives the sample vial. The adaptor is configured to position the sample vial such that the transparent portion of the enclosure is between the swab and the laser of the Raman instrument, and such that the swab is positioned at the focal distance of the laser.

Abstract: A method for the simultaneous multi-frequency signal processing within a single receiver is presented. The pulse compression or filtering method samples the received signal at a data rate commensurate with the maximum frequency separation of waveforms at separate frequencies being received, but the compression calculations are only performed at a rate commensurate with the bandwidth of each individual transmit waveform set. The method reduces the processor requirements for extracting all available information from these signals.

Abstract: A system and method for phased-array radar that is capable of accurate phase-only steering at any unambiguous angle is provided. In various embodiments, system and method that compensates for the varying effective element spacing of phased array radar, which occurs as a result of transmitting a wideband signal with phase shifters operating at a fixed phase, by interpolating and resampling across all elements, per frequency, to generate a desired effective spacing between the elements.

Abstract: Method and system for detecting and/or quantifying recent human presence in an environment using a calculated rate of decay of carbon dioxide concentration levels within that environment. A sensor measures the change in carbon dioxide levels over time to calculate the rate of decay to equilibrium and extrapolate recent human presence. Also provided is a method and system for quantifying recent human activity in an environment using the calculated rate of decay to equilibrium.

Abstract: The present invention is directed to a system that includes a semantic reasoning engine that is configured to convert radar track data into a directed graph representation (DGR) of the predetermined surveillance region and iteratively combine the DGRs to create a weighted directed graph (WDG) aligned and superimposed with the digital map data. The WDG includes first WDG elements corresponding to moving objects detected by a radar system. The WDG is compared to historical data to obtain a surveillance detection parameter. An alarm message is generated if the surveillance detection parameter deviates from the historical data by a predetermined amount. An output device is coupled to the semantic reasoning engine and is configured to provide a representation of the digital map data, the WDG and the at least one alarm message.

Abstract: A method and system for restoring a GPS signal is provided. The method including the steps of receiving a target location, receiving location of visible satellites, calculating a transmit delay, calculating a Doppler offset, calculating a chipping offset, computing navigating data and PRN codes, formulating signals using the transmit delay, Doppler offset, chipping offset, navigation data and PRN codes, and transmitting the formulated signal.

Abstract: A nucleic acid tag comprising a nucleotide-support platform attached to a nucleic acid molecule, an odorant, and an encapsulant. Unique nucleic acid-containing tags containing an odorant are seeded at one or more geographic locations. Using odorant-detection systems, the person or object of interest is examined for the presence of one or more of the odorant, thereby revealing the presence of the seeded nucleic acids and eliminating the expense and time associated with unnecessary screening. The geographic location associated with each detected nucleic acid is used to backtrack the item's path or extrapolate a probable point of origin.

Abstract: Methods and systems for identifying an aerosolized agent. A method for identifying an aerosolized agent includes the steps of providing a sample potentially containing an aerosolized agent, concentrating the sample with an aerosol collector, analyzing the concentrated sample on a collection substrate using spectroscopy to produce an aerosolized agent analysis output, comparing the analysis output to a database of known agent analysis outputs; identifying the aerosolized agent based on the comparison; and alerting a user to the presence of an aerosolized agent in the sample.

Abstract: A system and method for realistic speech synthesis which converts text into synthetic human speech with qualities appropriate to the context such as the language and dialect of the speaker, as well as expanding a speaker's phonetic inventory to produce more natural sounding speech.

Abstract: A high gain antenna for direction finding in the Ka-band. The antenna consists of a lens antenna fed by two micro strip patch antennas. The printed patch antennas are fed by a 180 degree hybrid coupler having four ports, with two ports connected to the feeds of the patch antennas and the other two ports connected to the receiver/exciter. The hybrid sums the signals from the patches and subtracts the signals from the patches to form sum and difference channels. By comparing the sum and difference channels, a user can determine whether the signal entered through the main beam. For example, if the sum signal is greater than the difference signal, the signal is in the main beam. If not, the signal came from another angle.

Abstract: The present invention relates to methods and systems for electronic countermeasures, and particularly to methods and systems for electronic countermeasures that employ radar jamming devices.

Abstract: A method for authenticating an item of interest. A nucleic acid tag comprised of a nucleotide-support platform attached to a first nucleic acid molecule is added to the item of interest, where information about the item of interest is contained within the first nucleic acid molecule. A portion of an item is sampled for the presence of the nucleic acid tag, where the item is potentially the item of interest. The presence of the nucleic acid tag is detected in the sample, where the presence of the first nucleic acid tag authenticates the item as the item of interest.

Abstract: A nucleic acid tag comprising a nucleotide-support platform attached to a nucleic acid molecule, an odorant, and an encapsulant. Unique nucleic acid-containing tags containing an odorant are seeded at one or more geographic locations. Using odorant-detection systems, the person or object of interest is examined for the presence of one or more of the odorant, thereby revealing the presence of the seeded nucleic acids and eliminating the expense and time associated with unnecessary screening. The geographic location associated with each detected nucleic acid is used to backtrack the item's path or extrapolate a probable point of origin.

Abstract: A target is located and a track is associated with the target in the fusion coordinate system. An estimate/prediction of the target's velocity is developed within the tracker, as well as {right arrow over (T)}, a vector representing the distance from the fusion center to the target as estimated by the tracker, and {right arrow over (S)}, a vector representing the known distance from the fusion center to the sensor. The sensor's range vector, {right arrow over (R)} (the distance from the sensor to the target as predicted by the tracker) is transformed to fusion coordinates. Using the sensor's range vector, normalized to unit length, in fusion coordinates and the estimated target's velocity, an estimate of the target's speed projected in the direction of {right arrow over (R)} is derived. The estimated range-rate is compared per update to the sensor's measured range-rate in the form of an error measurement. The error is then used to correct the track's velocity prediction.

Abstract: A system for identifying which of a plurality of nucleic acid tag varieties are present on an item of interest. The system includes nucleic acid tag varieties each including a nucleotide-support platform attached to a nucleic acid molecule, the nucleic acid molecule including a first and a second universal primer region common to all nucleic acid tag varieties, and a first and a second unique primer region unique to each nucleic acid tag variety. The system also includes a first primer set with a first primer complementary to the first universal primer region and a second primer complementary to the second universal primer region, as well as a second primer set with a first primer complementary to the first unique primer region of one of the nucleic acid tag varieties and a second primer complementary to the second unique primer region of the same nucleic acid tag variety.

Abstract: Methods and systems for detecting chemical and biological agents using oligonucleotide aptamers. A sensor includes a detection complex between an aptamer that has a binding domain for the chemical or biological agent, and a first oligonucleotide with a sequence complementary to a region of the aptamer. In the absence of the agent, the aptamer and the first oligonucleotide form an intermediate combination. In the presence of the agent, the intermediate combination dissociates. The sensor further includes a second oligonucleotide with a sequence that interacts with a region of the first oligonucleotide to form a duplex structure only when the first oligonucleotide is dissociated from the aptamer. When the duplex structure is formed, it can interact with a reporter molecule which in turn initiates a signal reporting detection of the chemical or biological agent.

Abstract: A nucleic acid tag comprising a nucleotide-support platform attached to a nucleic acid molecule, a fire retardant, and an encapsulant. Unique nucleic acid-containing tags containing a fire- or heat-protective element are seeded at one or more geographic locations. Using sequence analysis techniques, the person or object of interest is examined for the presence of one or more of the seeded nucleic acids. The geographic location associated with each detected nucleic acid is used to backtrack the item's path or extrapolate a probable point of origin.