一、前言在辐射测量方面已有很多关于标准化要求的论述。特别,用光谱选择探测器测量宽频带辐射源十分困难。在大多数情况下,若不知道源的辐射函数或探测器的光谱响应度,则可能引起相当大的误差。而利用探测器的光谱响应度或辐射源函数的有限知识即可降低误差。例如,如果探测器在其大部分响应范围选择性小,或已知辐射函数是一个灰体 I. INTRODUCTION There has been a great deal of discussion about standardization requirements in radiation measurement. In particular, it is very difficult to measure broadband sources using a spectrum-selective detector. In most cases, considerable errors can be caused without knowledge of the source’s radiation function or the detector’s spectral responsivity. Using the detector’s spectral responsivity or limited knowledge of the radiation source function can reduce the error. For example, if the detector is less selective over most of its response range, or it is known that the radiation function is a gray body