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公开(公告)号：US2463475A
公开(公告)日：1949-03-01
申请号：US61452645
申请日：1945-09-05
发明人： BUSIGNIES HEPRI G
IPC分类号： G01S3/08
CPC分类号： G01S3/085
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公开(公告)号：US2350337A
公开(公告)日：1944-06-06
申请号：US42300341
申请日：1941-12-15
申请人： UNITED AIR LINES INC
发明人： BRUNNER REED R
IPC分类号： G01S3/08
CPC分类号： G01S3/085
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13.发明授权公开(公告)号：US08674880B2
公开(公告)日：2014-03-18
申请号：US13128345
申请日：2009-11-04
IPC分类号： G01S5/04
CPC分类号： G01S3/085 , G01S3/023 , G01S3/28 , H01Q7/00 , H01Q21/205
摘要： A method of measuring the direction of arrival θ of radio signals in the HF band received by a crossed loop antenna includes, in a preparatory calibration phase, acquiring and recording the measurements made by the antenna of a calibration signal which varies in its frequency and bearing angle; and in a measurement phase in which the bearing angle or angles of arrival of signals detected by the antenna is or are determined, acquiring the signals detected in at least one frequency channel, and then, for each frequency channel fi, correlating the acquired signals with the recordings having frequencies close to fi, resulting from the calibration, and determining the direction of arrival of the signals by finding the bearing angle θ for which the maximum correlation is reached.
摘要翻译： 测量由交叉环形天线接收的HF频带中的无线电信号到达方向θ的方法包括：在准备校准阶段，获取并记录天线所测量的校准信号的频率和轴承的变化， 角度; 并且在确定由天线检测到的信号的方位角或到达角度的测量阶段中，获取在至少一个频道中检测到的信号，然后对于每个频道f i，将获取的信号与 记录具有接近于fi的频率，由校准产生，并且通过找到达到最大相关性的方位角θ确定信号的到达方向。
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公开(公告)号：US3112485A
公开(公告)日：1963-11-26
申请号：US13897761
申请日：1961-09-18
申请人： OEHLMAN WALTER C
发明人： OEHLMAN WALTER C
IPC分类号： G01S3/08
CPC分类号： G01S3/085
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公开(公告)号：US2480117A
公开(公告)日：1949-08-30
申请号：US60180145
申请日：1945-06-27
发明人： CHESUS FRANK O , THOMAS FRANK G
IPC分类号： G01S3/08
CPC分类号： G01S3/085
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公开(公告)号：US2276119A
公开(公告)日：1942-03-10
申请号：US32033840
申请日：1940-02-23
发明人： TERMAN FREDERICK E
IPC分类号： G01S3/08
CPC分类号： G01S3/085
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公开(公告)号：US1702440A
公开(公告)日：1929-02-19
申请号：US71723524
申请日：1924-06-02
发明人： PULLEN HINTON NORMAN
IPC分类号： G01S3/08
CPC分类号： G01S3/085
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公开(公告)号：US20170229762A1
公开(公告)日：2017-08-10
申请号：US15501225
申请日：2014-10-24
发明人： TIANJI ZHENG , MINJIA XU
摘要： A mobile computing device antenna according to one example includes a folded monopole element, a ground plane coupled to the folded monopole element by an antenna feed, a parasitic element that couples the folded monopole element to the ground plane, and a metal frame that encompasses the folded monopole element, the ground plane, and the parasitic element, where the metal frame is coupled to the ground plane by a plurality of ground points.
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20.发明申请公开(公告)号：US20120086605A1
公开(公告)日：2012-04-12
申请号：US13128345
申请日：2009-11-04
IPC分类号： G01S3/02
CPC分类号： G01S3/085 , G01S3/023 , G01S3/28 , H01Q7/00 , H01Q21/205
摘要： A method of measuring the direction of arrival θ of radio signals in the HF band received by a crossed loop antenna includes, in a preparatory calibration phase, acquiring and recording the measurements made by the antenna of a calibration signal which varies in its frequency and bearing angle; and in a measurement phase in which the bearing angle or angles of arrival of signals detected by the antenna is or are determined, acquiring the signals detected in at least one frequency channel, and then, for each frequency channel fi, correlating the acquired signals with the recordings having frequencies close to fi resulting from the calibration, and determining the direction of arrival of the signals by finding the bearing angle θ for which the maximum correlation is reached.
摘要翻译： 测量到达方向和方式的方法; 由交叉环形天线接收的HF频带中的无线电信号包括在准备校准阶段中，获取并记录由频率和方位角变化的校准信号的天线所做的测量; 并且在确定由天线检测到的信号的方位角或到达角度的测量阶段中，获取在至少一个频道中检测到的信号，然后对于每个频道f i，将获取的信号与 记录的频率接近于校准结果，并且通过找到轴承角度来确定信号的到达方向; 达到最大相关性。
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