1.引言 使用碳氢燃料的各类发动机和其他高温气体都提出了火焰或高温气体的温度测量问题.传统的一些方法,如热电偶直接测量法,使用时受到某些条件的限制,并干扰原来的物理场分布,给出的温度也不是瞬时值等,而光学测量方法则没有这些缺点.应用红外辐射光谱测量各种物态的温度,具有测量动态范围大,灵敏度高等主要优点,特别适合于测 1. INTRODUCTION Various types of engines and other hot gases that use hydrocarbon fuels have raised the issue of temperature measurement of flame or hot gases. Some traditional methods, such as the direct measurement of thermocouples, are subject to certain conditions of use and interfere with The original distribution of the physical field, given the temperature is not instantaneous value, and optical measurement methods do not have these shortcomings.Using infrared radiation spectroscopy to measure the temperature of various states, with the measurement of large dynamic range, high sensitivity, the main advantage, especially suitable In the test