The importance of the downward detection angle of the second generation infrared machine is described. And the calibration method is analyzed and calculated from the mathematical point of view.
介绍了红外二代机下探探测角度的重要性，并从数学角度对其校准方法进行了分析和计算。
The importance of the downward detection angle of the second generation infrared machine is described. And the calibration method is analyzed and calculated from the mathematical point of view.
介绍了红外二代机下探探测角度的重要性，并从数学角度对其校准方法进行了分析和计算。
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