Continuity of Landsat observations: Short term considerations

REMOTE SENSING OF ENVIRONMENT

卷:115

Article

Wulder, Michael A.¹  White, Joanne C.¹  Masek, Jeffrey G.²  Dwyer, John³  Roy, David P.⁴ 

[1] Nat Resources Canada, Pacific Forestry Ctr, Canadian Forest Serv, Victoria, BC V8Z 1M5, Canada

[2] NASA, Goddard Space Flight Ctr, Biospher Sci Branch, Greenbelt, MD 20771 USA

[3] US Geol Survey, Ctr Earth Resources Observat & Sci EROS, Sioux Falls, SD 57198 USA

[4] S Dakota State Univ, Geog Informat Sci Ctr Excellence, Brookings, SD 57007 USA

关键词: Landsat;    Monitoring;    Operational;    Research;    Continuity;    Global;    Land cover;    Change detection;   

DOI  :  10.1016/j.rse.2010.11.002

来源: Elsevier

【 摘 要 】

As of writing in mid-2010, both Landsat-5 and -7 continue to function, with sufficient fuel to enable data collection until the launch of the Landsat Data Continuity Mission (LDCM) scheduled for December of 2012. Failure of one or both of Landsat-5 or -7 may result in a lack of Landsat data for a period of time until the 2012 launch. Although the potential risk of a component failure increases the longer the sensor's design life is exceeded, the possible gap in Landsat data acquisition is reduced with each passing day and the risk of Landsat imagery being unavailable diminishes for all except a handful of applications that are particularly data demanding. Advances in Landsat data compositing and fusion are providing opportunities to address issues associated with Landsat-7 SLC-off imagery and to mitigate a potential acquisition gap through the integration of imagery from different sensors. The latter will likely also provide short-term, regional solutions to application-specific needs for the continuity of Landsat-like observations. Our goal in this communication is not to minimize the community's concerns regarding a gap in Landsat observations, but rather to clarify how the current situation has evolved and provide an up-to-date understanding of the circumstances, implications, and mitigation options related to a potential gap in the Landsat data record. Crown Copyright (C) 2010 Published by Elsevier Inc. All rights reserved.

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