High-accuracy source-independent radiometric calibration with low complexity for infrared photonic sensors

摘要

In SBRC, the responsivity of an IR sensor is measured as a black box to obtain its whole output when viewing the radiation from a source (i.e., blackbody). Conversely, in SIRC, the responsivity of a full or at least closely approached BLIP sensor, which can be satisfied by most onboard sensors, is calculated by modeling the relationship between the incident background radiation and its responsivity. In essence, SBRC is a measurement-based method while SIRC is a modeling-based one. Particularly, the responsivity here merely refers to the linear component of the whole relationship between DN and radiance illustrated above