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公开(公告)号：US20180306887A1
公开(公告)日：2018-10-25
申请号：US15492694
申请日：2017-04-20
Applicant: Raytheon Company
Inventor： Ian S. Robinson , Bradley A. Flanders , Daniel Kilfoyle
Abstract: Systems and methods for determining an angle of arrival (AoA) of a signal received from an emitters at a pair of antennas spaced apart by more than one half wavelength of the received signal. Features of the signal are determined, including a phase difference between signal components detected at the antennas, and a time difference of arrival (TDOA) having a known measurement error. A set of TDOA possibilities bounded by the known TDOA measurement error and a set of AoA estimates using phase interferometry (PI) within the range are calculated. The TDOA set is iteratively reduced to determine a precise AoA estimate for the emitter.
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公开(公告)号：US09444504B1
公开(公告)日：2016-09-13
申请号：US14846425
申请日：2015-09-04
Applicant: RAYTHEON COMPANY
Inventor： Ian S. Robinson , Daniel Kilfoyle , William P. Ballance
CPC classification number: H04B1/1036 , H03M1/12 , H04B1/10
Abstract: Method for capturing a high dynamic range signal includes: receiving the wideband analog signal; digitizing the wideband signal by a wideband ADC; detecting N strongest sub-bands in the digitized wideband analog signal; adaptively programming N bandstop filters to block the detected N strongest sub-bands from being digitized by the wideband ADC; adjusting a gain of output signals of the N bandstop filters to amplify said output signals; digitizing the amplified output signals by the wideband ADC to obtain a first digitized signal; adaptively programming N passband filters to pass the detected N strongest sub-bands to N ADCs, respectively; digitizing the detected strongest N sub-band signals output from the N pass-band filters by the respective N ADCs to obtain a plurality of second digitized signals; and processing the first digitized signal and the plurality of second digitized signals to identify any duplicate bands.
Abstract translation: 用于捕获高动态范围信号的方法包括：接收宽带模拟信号; 通过宽带ADC数字化宽带信号; 检测数字化宽带模拟信号中的N个最强子带; 自适应地编程N个带阻滤波器以阻止所检测到的N个最强子带被宽带ADC数字化; 调整N个带阻滤波器的输出信号的增益以放大所述输出信号; 通过宽带ADC数字化放大的输出信号以获得第一数字化信号; 自适应地编程N个通带滤波器以将检测到的N个最强子带分别传送到N个ADC; 对由N个通带滤波器输出的检测到的最强N个子带信号进行数字化，以获得多个第二数字化信号; 以及处理所述第一数字化信号和所述多个第二数字化信号以识别任何重复频带。
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公开(公告)号：US10422847B2
公开(公告)日：2019-09-24
申请号：US15492694
申请日：2017-04-20
Applicant: Raytheon Company
Inventor： Ian S. Robinson , Bradley A. Flanders , Daniel Kilfoyle
Abstract: Systems and methods for determining an angle of arrival (AoA) of a signal received from an emitters at a pair of antennas spaced apart by more than one half wavelength of the received signal. Features of the signal are determined, including a phase difference between signal components detected at the antennas, and a time difference of arrival (TDOA) having a known measurement error. A set of TDOA possibilities bounded by the known TDOA measurement error and a set of AoA estimates using phase interferometry (PI) within the range are calculated. The TDOA set is iteratively reduced to determine a precise AoA estimate for the emitter.
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