为了实现基于“标准探测器”的高精度辐亮度基准的传递，提高遥感器定标精度，研制了基于陷阱探测器的多波段辐亮度标准传递探测器(MRSTD)。该探测器具有8个测量通道，工作波段分布于400~1000 nm之间。其主要特点在于以硅陷阱探测器作为光功率测量部件，以窄带干涉滤光片进行分光，辅以视场光阑、孔径光阑限制入射孔径以及入射立体角，使用微弱电流测量电路测量探测器输出光电流，利用闭环温控系统对滤光片和陷阱探测器进行温控。详细介绍了该辐亮度探测器的工作原理、研制过程，并对其光谱辐亮度响应率定标不确定度进行了评估，其定标不确定度优于1.26%。

In order to provide radiance reference based on standard detector and improve the calibration accuracy of remote sensor, a multi-band radiance standard transfer detector (MRSTD) based on trap structure has been developed. There are eight channels in MRSTD and the aperation wavelengths of MRSTD are from 400 to 1000 nm. A Si trap detector is used for radiometric power measurement, an interference filter is used to limit the spectral band of the incident light, and a field stop and an aperture stop are used to limit receiving area and solid angle of the input flux. A weak current detection circuit is designed to measure the photocurrent of the detector accurately. The filter and the detector are temperature controlled by a closed-loop control system. The principle and development process of the facility are introduced and the uncertainties of its absolute spectral radiance responsivity are evaluated in detail. The relative uncertainty of MRSTD is less than 1.26%.