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The usefulness of Skylab/EREP S-190 and S-192 imagery in multistage forest surveysThe author has identified the following significant results. The RMSE of point location achieved with the annotation system on S190A imagery was 100 m and 90 m in the x and y direction, respectively. Potential gains in sampling precision attributable to space derived imagery ranged from 4.9 to 43.3 percent depending on the image type, interpretation method, time of year, and sampling method applied. Seasonal variation was significant. S190A products obtained in September yielded higher gains than those obtained in June. Using 100 primary sample units as a base under simple random sampling, the revenue made available for incorporating space acquired data into the sample design to estimate timber volume was as high as $39,400.00.
Document ID
19760011528
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Langley, P. G. (Earth Satellite Corp. Berkeley, CA, United States)
Vanroessel, J. (Earth Satellite Corp. Berkeley, CA, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1976
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NASA-CR-147439
G-091
E76-10197
Accession Number
76N18616
Funding Number(s)
CONTRACT_GRANT: NAS9-13289
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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