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MMWCAS-RF-EVM: 代码中天线出来问题

Part Number: MMWCAS-RF-EVM

 这部分代码究竟是什么原理呢,是先创建一个水平天线数×俯仰天线数(全用的话是9×3吗?)这么大的矩阵?然后把信号数据放到这个矩阵中吗?后面的fft不是只有天线间隔相同才能做FFT吗,我看天线排布情况俯仰的天线间隔都不一样,为什么可以直接对水平天线FFT后接着做FFT呢?