针对激光雷达散射截面的测量精度，指出测量中存在的背景散射问题。

To improve the measurement accuracy of laser radar cross section (LRCS), the background scattering existing in the measurement is pointed out.

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当宇宙微波背景辐射通过星系团时，气体将其中光线散射开来，其方式类似于地球大气层散射星光而使一些星星貌似闪烁。

These gases scatter light from the cosmic microwave background radiation as it passes through the clusters, similar to the way Earth's atmosphere can scatter starlight, making some stars twinkle.

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但对研究人员感兴趣的是在红色背景下散射的黄色斑点。

But the interesting part to researchers is the scattering of yellow flecks in the red background.

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