Earth Observing-1 Advanced Land Imager Flight Performance Assessment: Noise andDark Current Trending for the First 60 Days

摘要

Noise and dark current trending for the Earth Observing-1 Advanced Land Imagerduring its initial sixty days in orbit (November 21, 2000-January 19, 2001) is presented. Data were collected with the focal plane operating nominally at 220 K. The results presented here indicate the magnitude and repeatability of the focal plane noise has been good and closely matches pre-flight calibration measurements. The magnitude of the focal plane dark current for all bands has also been good, closely matches pre-flight calibration measurements, and has excellent stability during individual observations. However, dark current level variability as high as 30 digital numbers for Bands 1p, 4, 4p, 5p, 5, 7, and the Panchromatic band has been observed from one observation to another and is not well understood at this time.