The measurement results can be compared and validated with each other. So the effect on the result caused by the temperature drift of heat sink is reduced, and the precision is improved.

• DCICAR的两个腔面对相同的视场与温度环境,可以交替测量光辐射,测量数据可以相互比对、验证,从而降低了由于环境温度变化导致热沉温漂而对测量结果产生的影响,提高了测量精度。