Although FFT is the efficient approach in harmonic measurement fields, it results in spectral leakage, which affects the accuracy of measurement.
FFT是谐波测量中使用最广的方法之一,但利用其进行测量时存在着频谱泄漏,影响测量结果准确性。
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According to the principle of the "uniform magnetization" and harmonic analytic method, the fields of the ring structure system with multi-segmented and trapezoidal magnet are analysed.
The material has promising application prospects in fields of optoelectronic switches, nonlinear optical second harmonic, quick response liquid crystal display and the like.