研究了利用频谱仪射频衰减、分辨带宽、视频带宽和视频平均的方法，提高和改善低电平信号的测量精度。

Improving measurement accuracy of low level signal is studied using RF attenuation, resolution bandwidth, video bandwidth, and video average.

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但是传统仪器能够实现更复杂的测量并且具有高精度，高分辨率，高带宽的优点。

But traditional instruments make more-complex measurements and maintain advantages in accuracy, resolution, and bandwidth.

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涵盖的主题包括：在波动光学基本电动力学，极化，干扰，波导，菲涅耳和夫琅和费衍射，成像，分辨率，空间带宽产品。

Topics covered in wave optics include: basic electrodynamics, polarization, interference, wave-guiding, Fresnel and Fraunhofer diffraction, image formation, resolution, space-bandwidth product.

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