Subtractive spectroscopy was used to reduce the effect of atmosphere radiance on weak spectrum and enhance the spectral features of the chemical vapors.

• 本文将着重讨论化学蒸气红外辐射的传输特性及差谱技术用于抑制大气辐射对微弱目标的影响，增强化学蒸气光谱的特征。