![]() The results obtained from these methods are compared with those of preflight measurements. CBERS-1 and CBERS-2 have the same specifications and carry three sensors: the Wide Field Imager (WFI), High-Resolution CCD Camera and Infrared Multispectral Scanner (IRMSS). ![]() These approaches use artificial and natural targets to estimate the EIFOV in across-track and along-track directions. This work describes three approaches to estimate the effective spatial resolution of Charge-Coupled Device (CCD) cameras aboard China–Brazil Earth Resources Satellite (CBERS)-1 and CBERS-2. Another important parameter is the Effective Instantaneous Field of View (EIFOV), which is also used to measure system performance. Modulation Transfer Function (MTF) is a means of characterizing sensor spatial resolution and is used to measure image quality during in-flight commissioning phase.
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