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1.发明授权Short baseline helicopter positioning radar for low visibility using combined phased array and phase difference array receivers 有权使用组合相控阵和相位差阵列接收器的短基线直升机定位雷达，用于低可见度公开(公告)号：US08493263B2
公开(公告)日：2013-07-23
申请号：US13170680
申请日：2011-06-28
IPC分类号： G01S13/00
CPC分类号： G01S13/878 , G01S13/913 , G01S2013/0263
摘要： A helicopter position location system includes a receiver located substantially in a center of an array of receivers. A first array of receivers is located in a selected pattern separated from the center receiver by a first distance. Selected receivers in the first array are spaced apart from each other by at most one half wavelength of a base frequency of a locator signal transmitted from a helicopter. A second array of receivers is located in a selected pattern by a second distance larger than the first distance. A transmitter on the transmits a signal having a base frequency and a plurality of hop frequencies A processor in signal communication with the receivers is configured to determine phase difference with respect to frequency between any pair of receivers, to determine time delay of arrival based on the phase difference with respect to frequency, to beam steer response of the selected receivers, and to use the beam steered response and time delay of arrival between pairs of receivers to determine a position of the helicopter.
摘要翻译： 直升机位置定位系统包括基本上位于接收器阵列的中心的接收器。 接收器的第一阵列位于与中心接收器分离第一距离的选定图案中。 第一阵列中的选定的接收器彼此间隔开从直升机发射的定位信号的基本频率的至多一个半波长。 第二接收器阵列以选定的图案位于比第一距离大的第二距离处。 传送具有基频和多跳频率的信号的发射机与接收机进行信号通信的处理器被配置为确定相对于任何一对接收机之间的频率的相位差，以基于 相对于频率的相位差，对所选择的接收机的波束转向响应，以及使用波束控制响应和接收器对之间的到达时间延迟来确定直升机的位置。
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2.发明申请Short Baseline Helicopter Positioning Radar For Low Visibility Using Combined Phased Array and Phase Difference Array Receivers 有权短基线直升机定位雷达用于低可见性使用组合相控阵和相位差阵列接收机公开(公告)号：US20130002473A1
公开(公告)日：2013-01-03
申请号：US13170680
申请日：2011-06-28
IPC分类号： G01S13/06
CPC分类号： G01S13/878 , G01S13/913 , G01S2013/0263
摘要： A helicopter position location system includes a receiver located substantially in a center of an array of receivers. A first array of receivers is located in a selected pattern separated from the center receiver by a first distance. Selected receivers in the first array are spaced apart from each other by at most one half wavelength of a base frequency of a locator signal transmitted from a helicopter. A second array of receivers is located in a selected pattern by a second distance larger than the first distance. A transmitter on the transmits a signal having a base frequency and a plurality of hop frequencies A processor in signal communication with the receivers is configured to determine phase difference with respect to frequency between any pair of receivers, to determine time delay of arrival based on the phase difference with respect to frequency, to beam steer response of the selected receivers, and to use the beam steered response and time delay of arrival between pairs of receivers to determine a position of the helicopter.
摘要翻译： 直升机位置定位系统包括基本上位于接收器阵列的中心的接收器。 接收器的第一阵列位于与中心接收器分离第一距离的选定图案中。 第一阵列中的选定的接收器彼此间隔开从直升机发射的定位信号的基本频率的至多一个半波长。 第二接收器阵列以选定的图案位于比第一距离大的第二距离处。 传送具有基频和多跳频率的信号的发射机与接收机进行信号通信的处理器被配置为确定相对于任何一对接收机之间的频率的相位差，以基于 相对于频率的相位差，对所选择的接收机的波束转向响应，以及使用波束控制响应和接收器对之间的到达时间延迟来确定直升机的位置。
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