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公开(公告)号：US10935623B2
公开(公告)日：2021-03-02
申请号：US16120008
申请日：2018-08-31
Inventor： Richard E. Clymer
IPC: G01S3/28
Abstract: A process of screening direction finding solutions to reduce the number of valid direction finding solution rejections while maintaining an acceptable level of wild bearings being reported utilizing the proximity of the correlation values of the highest correlation and second highest correlation given a correlation pattern of a detected signal of unknown origin.
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公开(公告)号：US11808869B1
公开(公告)日：2023-11-07
申请号：US16887617
申请日：2020-05-29
Inventor： Richard E. Clymer
Abstract: Correlation interferometry direction finding (CIDF) processes that significantly improve processing time and cut memory requirements relative to the current memory requirements are provided herein. The presently disclosed processes further may utilize only the real portion of the correlation coefficient of the RF signal to further increase processing speed and decrease memory requirements while simultaneously improving direction finding accuracy and reducing the number of wild bearings reported.
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公开(公告)号：US20200072982A1
公开(公告)日：2020-03-05
申请号：US16114973
申请日：2018-08-28
Inventor： Richard E. Clymer
Abstract: An antenna receiver has antenna elements that are arranged in an array and spaced apart from each other at a distance greater than one-half wavelength of the highest operating frequency of a signal that is to be detected by the antenna receiver. The antenna receiver has geolocation logic that uses the inter-element phase difference measurements to obtain a location of the signal source. The change in the inter-element phase differences enables the elements to be spaced apart at great distances, which is beneficial for the physical construction of the platform, as the elements may be easily placed at convenient locations for conformal aerodynamic properties.
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公开(公告)号：US11988700B1
公开(公告)日：2024-05-21
申请号：US17536666
申请日：2021-11-29
Inventor： Richard E. Clymer
CPC classification number: G01R29/0892 , H01Q3/267
Abstract: An antenna calibration system and method utilizes both computer electromagnetic modeling and actual test fixture measurements for calibrating the antenna or multiple antennas in an array. Use of the test fixture measurements enables the calibration technique to account for design nuances or imperfections in each respective antenna to enable that particular antenna to be more accurately modeled for calibration without having to physically maneuver the platform to calibrate the antenna that is to be installed thereon. Use of computer electromagnetic modeling techniques then account for these design nuances or imperfections to provide improved modeling for calibrating the antenna on a platform prior to moving the platform with the antennas on the platform.
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公开(公告)号：US20230341497A1
公开(公告)日：2023-10-26
申请号：US16887617
申请日：2020-05-29
Inventor： Richard E. Clymer
Abstract: Correlation interferometry direction finding (CIDF) processes that significantly improve processing time and cut memory requirements relative to the current memory requirements are provided herein. The presently disclosed processes further may utilize only the real portion of the correlation coefficient of the RF signal to further increase processing speed and decrease memory requirements while simultaneously improving direction finding accuracy and reducing the number of wild bearings reported.
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Patent Agency Ranking
公开(公告)号：US20200072936A1
公开(公告)日：2020-03-05
申请号：US16120008
申请日：2018-08-31
Inventor： Richard E. Clymer
Abstract: A process of screening direction finding solutions to reduce the number of valid direction finding solution rejections while maintaining an acceptable level of wild bearings being reported utilizing the proximity of the correlation values of the highest correlation and second highest correlation given a correlation pattern of a detected signal of unknown origin.
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公开(公告)号：US10274579B2
公开(公告)日：2019-04-30
申请号：US15459748
申请日：2017-03-15
Inventor： Gerald J. Pellegrini , Richard E. Clymer , Keith A. Struckman , Gideon Litoff
Abstract: A method for improving direction finding and geolocation error estimation in direction finding and geolocation systems is disclosed. The corresponding phases of the received signals are determined. After an initial target estimation point of the received signals has been identified, the initial target estimation point is projected onto the earth's surface. A search grid having multiple grid points is then overlaid on the projected initial target estimation point, surrounding the projected initial target estimation point. The phase of signals emitting from a theoretical emitter located at each of the grid points of the search grid is estimated. Correlation coefficients between the estimated phases of the emitting signals and the determined phases of the received signals are determined. An error ellipse can be generated around one of the grid points having the highest correlation coefficient, and a source emitter is likely to be located within the error ellipse.
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公开(公告)号：US10969458B1
公开(公告)日：2021-04-06
申请号：US16042364
申请日：2018-07-23
Inventor： Richard E. Clymer , Luke D. St. Martin
Abstract: A system and method that can determine the direction of origin within 360 degrees around an antenna array for an emitted signal with a high degree of accuracy, even when the array is installed in a corrupted or “unclean” environment. Further, the provided system and method can provide a more accurate indication of direction despite polarization of the detected signal. Finally, the provided system and method can provide accurate results from phase measurements, amplitude measurements, or both phase and amplitude measurements, from an emitted signal where a phase network can be used to tailor the amplitude and phase variations versus spatial angle to best match the receiver measurement accuracies.
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公开(公告)号：US10935668B2
公开(公告)日：2021-03-02
申请号：US16114973
申请日：2018-08-28
Inventor： Richard E. Clymer
Abstract: An antenna receiver has antenna elements that are arranged in an array and spaced apart from each other at a distance greater than one-half wavelength of the highest operating frequency of a signal that is to be detected by the antenna receiver. The antenna receiver has geolocation logic that uses the inter-element phase difference measurements to obtain a location of the signal source. The change in the inter-element phase differences enables the elements to be spaced apart at great distances, which is beneficial for the physical construction of the platform, as the elements may be easily placed at convenient locations for conformal aerodynamic properties.
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公开(公告)号：US20200256982A1
公开(公告)日：2020-08-13
申请号：US16274419
申请日：2019-02-13
Inventor： Matthew P. Slaven , Richard E. Clymer , Gregory S. Laste
Abstract: A direction finding system and method to utilize synthetic apertures within a single short pulse transmission to extrapolate additional data relating to the signal to thereby increase the accuracy of the direction finding results given by a single short pulse is provided. The direction finding system may further exploit the movement of a platform to create the synthetic apertures within the signal data.
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