Share Email Print

Proceedings Paper

Effect of anomalies on data compression onboard a hyperspectral satellite
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The Canadian Space Agency (CSA) is developing a pre-operational spaceborne Hyperspectral Environment and Resource Observer (HERO). HERO will be a Canadian optical Earth observation mission that will address the stewardship of natural resources for sustainable development within Canada and globally. To deal with the challenge of extremely high data rate and the huge data volume generated onboard, CSA has developed two near lossless data compression techniques for use onboard a satellite. CSA is planning to place a data compressor onboard HERO using these techniques to reduce the requirement for onboard storage and to better match the available downlink capacity. Anomalies in the raw hyperspectral data can be caused by detector and instrument defects. This work focuses on anomalies that are caused by dead detector elements, frozen detector elements, overresponsive detector elements and saturation. This paper addresses the effect of these anomalies in raw hyperspectral imagery on data compression. The outcome of this work will help to decide whether or not an onboard data preprocessing to remove these anomalies is required before compression. Hyperspectral datacubes acquired using two hyperspectral sensors were tested. Statistical measures were used to evaluate the data compression performance with or without removing the anomalies. The effect of anomalies on compressed data was also evaluated using a remote sensing application.

Paper Details

Date Published: 18 August 2005
PDF: 11 pages
Proc. SPIE 5889, Satellite Data Compression, Communications, and Archiving, 588902 (18 August 2005); doi: 10.1117/12.613195
Show Author Affiliations
Shen-En Qian, Canadian Space Agency (Canada)
Martin Bergeron, Canadian Space Agency (Canada)
Josee Levesque, Defence Research and Development (Canada)
Allan Hollinger, Canadian Space Agency (Canada)

Published in SPIE Proceedings Vol. 5889:
Satellite Data Compression, Communications, and Archiving
Bormin Huang; Roger W. Heymann; Charles C. Wang, Editor(s)

© SPIE. Terms of Use
Back to Top