This Technical Note outlines the generic steps required to ensure that a long term site photographic record is maintained in support of the documented reference-quality data. The aim is to establish a long-term visual record against which any unaccounted for variability in data measurement can be assessed.

v1.0 (2020-05-12)

David Smyth, PeterThorne, First published version as GRUAN Technical Note 9 (GRUAN-TN-9)

 

Larson et al. (2010):

Larson, K.M.; Braun, J.J.; Small, E.E.; Zavorotny, V.U.; Gutmann, E.D. and Bilich, A.L., GPS multipath and its relation to near-surface soil moisture content, IEEE J-STARS, 3, 91-99, doi:10.1109/JSTARS.2009.2033612, 2010, pp 97., available at https://ieeexplore.ieee.org/document/5325890

Pierdicca et al. (2014):

Pierdicca, N.; Guerriero, L.; Giusto, R.; Broioni, M. and Egido, A., SAVERS: A Simulator of GNSS Reflections from Bare and Vegetated Soils, IEEE Trans. Geosci. Remote Sensing, 52, 6542–6554, doi:10.1109/TGRS.2013.2297572, 2014, pp 6546., available at https://ieeexplore.ieee.org/document/6725659