Chandrayaan-1: Hyper-spectral Imager Camera Electronics

摘要

The Hyper spectral Imager on, Chandrayaan-1 India's first mission to moon, makes use of lens, wedge filter, active pixel area array detector and miniaturized electronics to provide a highly compact low power and weight payload. The camera electronics is designed to generate stimuli for the detector operation and process the detector digital data. Real time data storage and processing is carried out onboard. Camera electronics incorporates various programmable features. There are two coarse gain and four exposure level settings based on the intensity of scene illumination. The onboard processing takes care of the yaw rotation of the spacecraft. Redundancy is incorporated wherever necessary based on the system requirements. Camera electronics is custom developed with main goals of low weight, volume, size and power meeting the overall system requirements. Detailed simulation, testing and analysis have been carried out on the design. Consistent performance has been achieved during all the tests and the designed performance at the camera level has been validated through testing and pictures received from Chandrayaan-1.