LARGE-scale fine-resolution products of forest disturbance using new approaches from spacborne sar interferometry

Yang Lei, Robert Treuhaft, Michael Keller, Richard Lucas, Paul Siqueira, Michael Schmidt
2017 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)  
Spaceborne SAR interferometry (InSAR) has the potential of detecting forest change on a global scale with fine (meter-level) spatial resolution as well as on a monthly/weekly basis regardless of day or night. This is significant to characterize the land-use change and its impact on climate change. In this paper, both single-pass and repeat-pass SAR interferometry from spaceborne sensors are combined in order to detect and quantify (with Normalized RMSE ≤ 30%) forest disturbance at a large scale
more » ... (dozens of kilometers) however with a fine spatial resolution (< 1 hectare) based on two newly developed approaches. The singlepass InSAR approach is not only able to detect forest disturbance but also capable of characterizing meter (or even sub-meter) level change of forest phase-center (mean) height due to forest growth and/or degradation. These methods are extensively validated with the past and current spaceborne single-pass and repeatpass InSAR missions (i.e. JAXA's ALOS-1, ALOS-2 and DLR's TanDEM-X) over subtropical forests in Australia as well as tropical forests in Brazil. Such techniques also serve as observing prototypes for the fusion of the future spaceborne InSAR missions (such as NASA-ISRO's NISAR and DLR's TanDEM-L).
doi:10.1109/igarss.2017.8127957 dblp:conf/igarss/LeiTKLSS17 fatcat:ycuu3dk6rvc5ldduibeqat3czu