专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2012003018A1 METHOD FOR LOW SIDELOBE OPERATION OF A PHASED ARRAY ANTENNA HAVING FAILED ANTENNA ELEMENTS 审中-公开
标题翻译：具有失效天线元素的相位阵列天线的低边界操作方法
公开(公告)号：WO2012003018A1
公开(公告)日：2012-01-05
申请号：PCT/US2011/029734
申请日：2011-03-24
申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY , KRICH, Steven Ira , PRUST, Cory J. , WEINER, Ian
发明人： KRICH, Steven Ira , PRUST, Cory J. , WEINER, Ian
IPC分类号： H01Q3/26
CPC分类号： H01Q3/26
摘要： Described is a method of modifying an antenna pattern for a phased array antenna having at least one failed antenna element. A number of proximate beamformers in a proximate angular region about a beamformer at an angle of interest are determined. Each of the proximate beamformers has a proximate beamformer weight vector. A corrected beamformer weight vector is determined for the angle of interest as a linear combination of the proximate beamformer weight vectors. Each element of the corrected beamformer weight vector that corresponds to one of the failed antenna elements has a value of zero. The method enables computation of low spatial sidelobe antenna patterns without requiring a recalibration of the antenna thereby enabling uninterrupted operation of systems that employ phased array antennas. The method can also be used to control taper loss or sidelobe level for phased array antennas that have no failed antenna elements.
摘要翻译：描述了一种用于修改具有至少一个故障天线元件的相控阵天线的天线方向图的方法。确定在感兴趣的角度处关于波束形成器的邻近角度区域中的多个邻近波束形成器。每个近邻波束形成器具有邻近波束形成器权重向量。对于感兴趣的角度来确定校正的波束形成器权重向量作为邻近波束形成器权重向量的线性组合。对应于一个故障天线元件的校正波束形成器权重向量的每个元素具有零值。该方法能够计算低空间旁瓣天线图案，而不需要对天线进行重新校准，从而实现采用相控阵天线的系统的不间断操作。该方法还可用于控制没有故障天线元件的相控阵天线的锥度损耗或旁瓣电平。

2. 发明申请

WO2011123310A2 ITERATIVE CLUTTER CALIBRATION WITH PHASED ARRAY ANTENNAS 审中-公开
标题翻译：相控阵天线的迭代式杂波校准
公开(公告)号：WO2011123310A2
公开(公告)日：2011-10-06
申请号：PCT/US2011029702
申请日：2011-03-24
申请人： MASSACHUSETTS INST TECHNOLOGY , KRICH STEVEN IRA , WEINER IAN
发明人： KRICH STEVEN IRA , WEINER IAN
IPC分类号： G01S13/53
CPC分类号： G01S7/2813 , G01S13/582
摘要： An iterative clutter calibration method comprises measuring an average of a sidelobe power in a range-Doppler image for a plurality of ranges. A determined value of an objective function is responsive to an average of the sidelobe clutter power. A plurality of beamformer weights is modified and the step of determining the value of the objective function is repeated until a maximum value of the objective function is determined. Each beamformer weight determines a gain and phase of a respective antenna element in an antenna system.
摘要翻译：迭代杂波校准方法包括测量多个范围的距离 - 多普勒图像中的旁瓣功率的平均值。目标函数的确定值响应于旁瓣杂波功率的平均值。重复多个波束形成器权重，并重复确定目标函数的值的步骤，直到确定目标函数的最大值。每个波束形成器权重确定天线系统中各个天线单元的增益和相位。

3. 发明申请

WO2011123310A3 ITERATIVE CLUTTER CALIBRATION WITH PHASED ARRAY ANTENNAS 审中-公开
公开(公告)号：WO2011123310A3
公开(公告)日：2011-10-06
申请号：PCT/US2011/029702
申请日：2011-03-24
申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY , KRICH, Steven, Ira , WEINER, Ian
发明人： KRICH, Steven, Ira , WEINER, Ian
IPC分类号： G01S13/53
摘要： An iterative clutter calibration method comprises measuring an average of a sidelobe power in a range-Doppler image for a plurality of ranges. A determined value of an objective function is responsive to an average of the sidelobe clutter power. A plurality of beamformer weights is modified and the step of determining the value of the objective function is repeated until a maximum value of the objective function is determined. Each beamformer weight determines a gain and phase of a respective antenna element in an antenna system.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式