Multi temporal Land use classification using synthetic aperture radar images

M-GEO
ACQUAL
Staff Involved
M-SE Core knowledge areas
Spatial Information Science (SIS)
Topic description

Land use classification of urban area is one of the most important applications of remote sensing images. Urban management is generally in demand to account the dynamics of land uses. In this subject, multi-temporal classification accounts the timely (seasonal or annual) variation of cities, which is very useful to understand the impact of land use dynamic on urban’s morphology. Several land use classification techniques based on optical data are so far available. However, it turns out that half of the world is in nighttime, and half of the world, on average, is cloudy. When combining these two together, about 75 percent of Earth, at any given time, is going to be cloudy, nighttime, or it's going to be both. This issue urges requirements to radar remote sensing-based classification, which allows us to monitor our cities in all-weather and in all-light conditions and to do so reliably and transparently. Thus, this study will perform a multi-temporal land use classification using RadaraSAT-2 images. The selected test site for the classification is Enschede.

Topic objectives and methodology

The objective of this study is time-series or multi-temporal classification of Enschede. Seasonal polarimetric spaceborne RadarSAT-2 images over the city will be considered. From each data set several efficient polarimetric features will be extracted based on novel decomposition techniques that are useful to identify and separate different targets. The extracted feature will be further employed in the classification procedure in order to identify the land uses. The obtained time-series land use maps will be later analyzed in order to characterize the dynamic and variation of land uses over the test site.
Two recommended software for the implementation of this projects are: POLSARPRO and ENVI.
An example of time series classification as the output of this project is shown in the abo

References for further reading

Aghababaee, H., & Sahebi, M. R. (2016). Incoherent target scattering decomposition of polarimetric SAR data based on vector model roll-invariant parameters. IEEE Transactions on Geoscience and Remote Sensing, 54(8), 4392-4401.

Koeniguer, E. C., Weissgerber, F., Trouve, N., & Nicolas, J. M. (2015, July). Multitemporal polarimetric SAR images for urban areas. In 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) (pp. 231-234). IEEE.