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System and method for adaptive correction to phased array antenna array coefficients through dithering and near-field sensing

机译:通过抖动和近场感测对相控阵天线阵列系数进行自适应校正的系统和方法

摘要

A system and method of adaptively correcting the excitation or receive coefficients for a phased array antenna. For a transmitting antenna, a sensor located in the near field of the antenna is used to sense the antenna transmission. A reference signal that represents the sensor response to a desired antenna transmission that is accomplished with predetermined excitation coefficients is determined. The magnitudes and phases of the excitation coefficients are modified in a predetermined manner to create a modified antenna transmission. An actual signal that represents the sensor response to the modified antenna transmission is then determined. The excitation coefficients are then corrected using the differences between the reference signal and the actual signal, such that the modified antenna transmission becomes closer to the desired antenna transmission. The method and system also apply to a receiving antenna.
机译:一种自适应校正相控阵天线的激励或接收系数的系统和方法。对于发射天线,位于天线近场中的传感器用于感应天线传输。确定参考信号,该参考信号表示传感器对通过预定激励系数完成的所需天线传输的响应。以预定方式修改激励系数的大小和相位,以创建修改后的天线传输。然后确定代表传感器对修改的天线传输的响应的实际信号。然后,使用参考信号和实际信号之间的差异来校正激励系数,以使修改后的天线传输变得更接近所需的天线传输。该方法和系统也适用于接收天线。

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