This article describes two algorithms that are effective for the remote calibration of an N/sub e/ element active phased array antenna. These algorithms involve transmission of orthogonal encoded signals. The unitary transform encoding (UTE) algorithm is most suited for digital beamforming as it requires additional encoding hardware for an analog implementation. The control circuit encoding (CCE) algorithm is ideally suited for analog beamformers as it requires no additional encoding hardware. The CCE method encodes phased array elemental signals using a Hadamard matrix to control the switching of intrinsic phase shifter delay circuits. The UTE and CCE algorithms can reduce the average measurement integration times for the complete set of calibration parameters by /spl sim/N/sub e/ relative to the corresponding values for single-element calibration procedures.
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机译:本文介绍了两种算法,该算法对于N / SUB E /元素有源相控阵天线的远程校准有效。 这些算法涉及正交编码信号的传输。 单一变换编码(UTE)算法最适合于数字波束形成,因为它需要用于模拟实现的额外编码硬件。 控制电路编码(CCE)算法非常适合模拟波束形成器,因为它不需要额外的编码硬件。 CCE方法使用Hadamard矩阵对分阶段阵列元素信号进行编码,以控制内在移相器延迟电路的切换。 UTE和CCE算法可以通过/ SPL SIM / N / SUB E /相对于单元校准程序的相应值来降低完整的校准参数的平均测量集成时间。
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