Patent application number | Description | Published |
20100253573 | System and Method for Suppressing Close Clutter in a Radar System - A system for processing electromagnetic waves in a radar system is disclosed. The system includes a transmitter operable to transmit operating waves and calibration waves, one or more receivers operable to receive reflected calibration waves and operating waves, and a system controller operable to process the received calibration waves and operating waves. The system controller may process the received waves by generating a threshold signal based on the calibration waves, and comparing the threshold signal to the operating waves. The system controller may also process operating waves and calibration waves in accordance with one or more signal conditioning algorithms. Additionally, the system controller may display an image representing a target on a display by comparing received operating waves with the generated threshold signal. | 10-07-2010 |
20120026031 | Method and System for Continuous Wave Interference Suppression in Pulsed Signal Processing - A System and Method for CW interference suppression in pulsed signal processing having a front-end, an A/D converter, a data store, and a suppressor module coupled to both the A/D converter and the data store. The front-end is operable to receive a waveform and communicate such to the A/D converter to digitize for processing by the suppressor module. The suppressor module being operable to further process the digitized waveform by way of applying a FFT to obtain a corresponding amplitude spectrum of the digitized waveform, clipping the amplitude spectrum to obtain a clipped amplitude spectrum, performing successive piece-wise IFFTs on the positive frequency points of the clipped amplitude spectrum to obtain multiple amplitude-time series, each having a frequency value assigned, and then stacking such amplitude-time series successively in the data store to form a time-frequency spectrogram array to thereby facilitate suppression of interference signals and detection of data pulses. | 02-02-2012 |
20120295565 | SYSTEM AND METHOD FOR ANALOG INTERFERENCE SUPPRESSION IN PULSED SIGNAL PROCESSING - A method for suppressing interference signals within a waveform includes performing an analog Fourier transform on the waveform with a hardware circuit to obtain an amplitude spectrum having a plurality of frequency bins and computing a noise floor spectrum from the amplitude spectrum to obtain a noise floor spectrum; creating a threshold spectrum based on the noise floor spectrum. The method also includes replacing the amplitude of each bin of the amplitude spectrum that exceeds a corresponding bin of the threshold spectrum with an alternative value to form a corrected spectrum and performing an analog inverse Fourier transform on the corrected spectrum thereby suppressing interference signals within the waveform. | 11-22-2012 |
20120320363 | DETERMINING THRESHOLDS TO FILTER NOISE IN GMAPD LADAR DATA - In one aspect, a computerized method to automatically determine thresholds includes receiving data generated from a Geiger-mode avalanche photodiode (GmAPD) laser detecting and ranging (LADAR) sensor of a scene, determining an overall threshold value for the scene using a binomial distribution and determining post threshold values for each x-y position in the scene. The computerized method also includes, for each x-y position, using a maximum value of the post threshold values and the overall threshold value to filter the data from the scene. | 12-20-2012 |
20130021342 | NOISE REDUCTION AND FOCUSING ALGORITHMS FOR GMAPD - An apparatus and method for processing of XYZ point clouds obtained from a GmAPD LADAR using low-pass filtering followed by high-pass filtering and deconvolution. | 01-24-2013 |
20130022241 | ENHANCING GMAPD LADAR IMAGES USING 3-D WALLIS STATISTICAL DIFFERENCING - A method for processing XYZ point cloud of a scene acquired by a GmAPD LADAR includes: performing on a computing device a three-dimensional statistical differencing on the XYZ point cloud obtained from the GmAPD LADAR to produce a SD point cloud; and displaying an image of the SD point cloud. | 01-24-2013 |
20130108148 | AUTOMATED BUILDING DETECTING | 05-02-2013 |
20140028834 | METHOD AND APPARATUS FOR DETECTING MINIMUM POST SPACING IN IMAGING APPLICATIONS - A method includes receiving image data obtained by a laser imaging system. The method also includes identifying a minimum post spacing obtainable in a three-dimensional image constructed using the image data. The minimum post spacing defines a maximum obtainable resolution of the image. Identifying the minimum post spacing includes using (i) multiple point spread functions associated with the image data and (ii) a number of laser pulses directed at a specified area by the imaging system during capture of the image data. Identifying the minimum post spacing may also include using (iii) a minimum contrast ratio associated with the image. The point spread functions may be associated with different point reflectors, have a Gaussian distribution, and overlap. | 01-30-2014 |
20140072220 | METHOD AND APPARATUS FOR IDENTIFYING A VIBROMETRY SPECTRUM IN IMAGING APPLICATIONS - A method includes obtaining image data associated with a specified area having one or more objects. The method also includes segmenting the image data into one or more segments associated with the one or more objects. The method further includes analyzing each of the one or more segments to identify a vibrometry spectrum associated with the corresponding object. In addition, the method includes generating an image of the specified area using the vibrometry spectrum associated with each object. The image of the specified area could illustrate each of the one or more objects with an intensity based on a total power of that target's total vibrational energy. The image of the specified area could also illustrate movement of at least one object over time. | 03-13-2014 |
20150071566 | PSEUDO-INVERSE USING WEINER-LEVINSON DECONVOLUTION FOR GMAPD LADAR NOISE REDUCTION AND FOCUSING - An apparatus and method for image processing of XYZ point clouds obtained from a GmAPD LADAR using low-pass filtering followed by high-pass filtering and deconvolution. Preferably, the low-pass filter parameters are developed numerically utilizing Weiner-Levinson Deconvolution (WLD). | 03-12-2015 |