Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/115383
Title: An overview of XSAT data downlink and image processing system design and development
Authors: Tan, W.J. 
Kwoh, L.K. 
Keywords: Ground station operation
Image processing
Issue Date: 2011
Citation: Tan, W.J.,Kwoh, L.K. (2011). An overview of XSAT data downlink and image processing system design and development. 32nd Asian Conference on Remote Sensing 2011, ACRS 2011 2 : 1079-1083. ScholarBank@NUS Repository.
Abstract: To produce images from a raw data bitstream from Earth observation satellites, a multi step process is employed. It includes reception via X-band antenna, down conversion, demodulation, disambiguation and frame formatting, error correction if any, data descrambling, image generation and timing recovery, radiometric and geometric correction, and finally archiving and distribution. Apart from antenna and demodulator hardware subsystems, XSAT's data ground station's design and development was an in-house effort at CRISP, National University of Singapore. In this paper, we present the design and operation of the various components of the XSAT data ground station. This includes the software based QPSK disambiguation algorithm, the image processing software for normalization and formatting, archival and distribution architecture and the automation process to increase operational efficiency.
Source Title: 32nd Asian Conference on Remote Sensing 2011, ACRS 2011
URI: http://scholarbank.nus.edu.sg/handle/10635/115383
ISBN: 9781618394972
Appears in Collections:Staff Publications

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