Study on the Technology of High-Dynamic-Range Low-Light-Level Remote-Sensing Camera

In recent years, Low-Light-Level (LLL) remote - sensing camera has become a novel subject for the development of aerospace optical remote-sensing payloads. In this article, the status quo and trend of LLL remote-sensing imaging technology is introduced. The technical method for LLL remote-sensing imaging is studied. In view of the requirement of high-dynamic-range (HDR) LLL imaging in space remote sensing, a camera based on an Intensified Charge-Coupled Device (ICCD) is designed. A method to measure the signal-to-noise ratio (SNR) of the LLL camera is proposed and tested. A field experiment for the LLL camera is also carried out. The results of testing and experiment indicate that the designed camera is capable of HDR LLL imaging.