SPHEREx的图像残留标记
Image persistence flagging for SPHEREx
AI总结：
本文针对SPHEREx项目中HAWAII-2RG HgCdTe探测器的图像残留问题，提出了一种衰减信号估算模型，可标记过量残留电流像素，还能通过模拟验证模块并预测其对飞行数据的影响。
AI中文摘要：
多个研究团队已观测到HAWAII-2RG HgCdTe探测器存在图像残留现象，该现象也被称为潜信号，其产生机制为：在光源被移除且探测器完成复位后，受光照影响的传感器图像仍会以衰减形式出现。本文利用为SPHEREx测试交付的工程级探测器阵列在宽通量范围内的光照数据，提出了一种可对衰减信号进行估算的解释与可行模型，具备对超出指定阈值的过量残留电流像素进行标记的能力。通过模拟残留图像可验证该模块，并预测其对在轨飞行数据的影响。
英文摘要：
Image persistence in HAWAII-2RG HgCdTe detectors has been observed by multiple parties. Also known as latent signal, this effect occurs when sensor images following an illumination show a decayed form of the illuminated image even though the source has been removed and the detector has been reset. Using data from an engineering grade detector array delivered for SPHEREx testing illuminated with a wide range of fluxes, we demonstrate an interpretation and a working model from which the decaying signal can be estimated, providing the ability to flag pixels subject to excess persistence current beyond a specified threshold. Simulated persistence images allow validation of the module and prediction of its effect in flight data.
