Abstract: An RF pulse correlator comprising a track database, an antenna, a receiver, and a processor. The track database is configured to store established tracks of RF emissions. The antenna and receiver are configured to receive RF pulses. The tracker is configured to generate improved geolocation data for every received RF pulse based on kinematics of the received RF pulses. The processor is communicatively coupled to the database, the receiver, and the tracker. The processor is configured to associate each received RF pulse with an existing track in the track database or to create a new track.

Abstract: An apparatus and method identify emitters. The apparatus includes a receiver, a parameter estimator, a database, and a correlator. The receiver receives an electromagnetic signal from an emitter and measures actual values of observed parameters of the electromagnetic signal. The parameter estimator surmises surmised values of unobserved parameters from the actual values of the observed parameters. The actual values of the observed parameters and the surmised values of the unobserved parameters characterize the emitter. The database stores one or more entries for each emitter. Each entry specifies an identifier of an emitter and exemplary values of the observed and unobserved parameters. The correlator matches the actual values of the observed parameters and the surmised values of the unobserved parameters with the exemplary values of one of the entries of the emitter from which the receiver receives the electromagnetic signal. The correlator outputs the identifier from this entry in the database.

Abstract: An apparatus and method identify emitters. The apparatus includes a receiver, a parameter estimator, a database, and a correlator. The receiver receives an electromagnetic signal from an emitter and measures actual values of observed parameters of the electromagnetic signal. The parameter estimator surmises surmised values of unobserved parameters from the actual values of the observed parameters. The actual values of the observed parameters and the surmised values of the unobserved parameters characterize the emitter. The database stores one or more entries for each emitter. Each entry specifies an identifier of an emitter and exemplary values of the observed and unobserved parameters. The correlator matches the actual values of the observed parameters and the surmised values of the unobserved parameters with the exemplary values of one of the entries of the emitter from which the receiver receives the electromagnetic signal. The correlator outputs the identifier from this entry in the database.

Abstract: An apparatus for passive coherent location includes a forecaster, an evaluator, a receiver, and a correlator. The forecaster generates a prediction of a radio-frequency signal transmitted from an antenna of a broadcasting service. The evaluator generates an effectiveness metric from the prediction of the radio-frequency signal. The receiver receives the radio-frequency signal that an object reflects from the antenna to the receiver. The correlator determines, from the radio-frequency signal reflected from the object as received at the receiver, an ambiguity function having a maximum at a temporal offset and a Doppler shift. The temporal offset and the Doppler shift at the maximum partially determine at least a position of the object. The apparatus optionally includes a selector for tuning the receiver to the radio-frequency signal in response to the effectiveness metric.

Abstract: Method and system for improved contrast enhancement. The method includes receiving, from at least one imaging system, first and second component chiral images, the first component chiral image being captured by a first filter that is polarized in a first direction, the second component chiral image being captured by a second filter that is polarized in a second direction, the second direction being substantially orthogonal to the first direction. The method also includes pre-enhancing, by a processor, one or both of said first component chiral image and said second component chiral image. Then the processor weights and sums at least a portion of the first and second component chiral images. Weighting and summing may be repeated until an optimal weight is reached. A contrast enhanced image may be generated after the optimal weight is reached.

Abstract: Method and system for improved contrast enhancement. The method includes receiving, from at least one imaging system, first and second component chiral images, the first component chiral image being captured by a first filter that is polarized in a first direction, the second component chiral image being captured by a second filter that is polarized in a second direction, the second direction being substantially orthogonal to the first direction. The method also includes pre-enhancing, by a processor, one or both of said first component chiral image and said second component chiral image. Then the processor weights and sums at least a portion of the first and second component chiral images. Weighting and summing may be repeated until an optimal weight is reached. A contrast enhanced image may be generated after the optimal weight is reached.

Abstract: A device for detecting frequency modulated continuous wave radar includes an antenna connected to a bandpass filter. The antenna is configured to receive frequency modulated continuous wave (FMCW) pulses within a predetermined frequency range. A frequency mixer is connected to the bandpass filter and a synthesizer and is configured to mix a signal from the synthesizer with an output of the bandpass filter to produce basebanded data. A high-pass filter is configured to isolate short pulses pertaining to the basebanded data, and a low-pass filter is configured to isolate long pulses pertaining to the basebanded data. A microprocessor is configured to set thresholds for comparison with the outputs of the high-pass filter and the low-pass filter.

Abstract: A method and system for deinterlacing. A memory receives a current input image frame and a next input image frame. A processor estimates motion between the current input image frame and the next input image frame. Based on the motion estimate, a deinterlace map is created that indicates where the current input image frame should be deinterlaced. The current input image frame is split into fields, the first frame being an odd field frame, the second frame being an even field frame. The processor interpolates missing lines in the image. Two deinterlaced frames are output, with the first deinterlaced frame being based on the odd field frame and the second deinterlaced frame being based on the even field frame.

Abstract: A device for detecting frequency modulated continuous wave radar includes an antenna connected to a bandpass filter. The antenna is configured to receive frequency modulated continuous wave (FMCW) pulses within a predetermined frequency range. A frequency mixer is connected to the bandpass filter and a synthesizer and is configured to mix a signal from the synthesizer with an output of the bandpass filter to produce basebanded data. A high-pass filter is configured to isolate short pulses pertaining to the basebanded data, and a low-pass filter is configured to isolate long pulses pertaining to the basebanded data. A microprocessor is configured to set thresholds for comparison with the outputs of the high-pass filter and the low-pass filter.

Abstract: A method for highlighting edges of interest in an image comprising the following steps: calculating edge intensity of edges in the image using gradient operators; applying a transformation to emphasize mid-level edges and deemphasize strong edges; and if a given transformed edge is greater than a threshold value, highlighting the corresponding edge in an edge-highlighted image.

Abstract: A method for highlighting edges of interest in an image comprising the following steps: calculating edge intensity of edges in the image using gradient operators; applying a transformation to emphasize mid-level edges and deemphasize strong edges; and if a given transformed edge is greater than a threshold value, highlighting the corresponding edge in an edge-highlighted image.