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Environ Monit Assess. 2018 Sep 14;190(10):588. doi: 10.1007/s10661-018-6921-y.

Land consumption monitoring: an innovative method integrating SAR and optical data.

Author information

1
Civil and Environmental Engineer, Via Serra De'Conti 68, 00138, Rome, Italy. saramastrorosa@gmail.com.
2
Geomatics Division Head, Remote Sensing Department, Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), Barcelona, Spain.
3
ISPRA - Italian Institute for Environmental Protection and Research, Rome, Italy.

Abstract

In this paper, the use of synthetic aperture radar (SAR) for the monitoring of land consumption is analyzed. The paper presents an automatic procedure that integrates SAR and optical data, which can be effectively used to generate land consumption maps or update existing maps. The main input of the procedure is a series of SAR amplitude images acquired over a given geographical area and observation period. The main assumption of the procedure is that land consumption is associated with an increase of the SAR amplitude values. Such an increase is detected in the SAR amplitude time series using an automatic Bayesian algorithm. The results based on the SAR amplitude are then filtered using an NDVI map derived from optical imagery. The effectiveness of the proposed procedure is illustrated using SAR data from the Sentinel-1 and TerraSAR-X sensors, and optical data from the Sentinel-2 sensor.

KEYWORDS:

Land use/land cover; Multi-temporal series; SAR images; Step detection; Time series

PMID:
30218161
DOI:
10.1007/s10661-018-6921-y
[Indexed for MEDLINE]

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