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Abstract <p>This study demonstrates the feasibility of monitoring boreal forest height dynamics via L-band Differential Interferometric Synthetic Aperture Radar (DInSAR), leveraging ALOS-2 PALSAR-2 data acquired over an extremely long temporal baseline of 2114 days. Despite the challenge of temporal decorrelation, high-quality interferometric measurements were achieved through careful selection of an interferometric pair with exceptionally similar atmospheric and forest–ground surface conditions. Validation against reference data confirmed that the resulting map of scattering phase center displacements reflects real physical processes (height decrease due to logging and height increase due to growth) rather than decorrelation noise. The results prove the practical applicability of multi-temporal DInSAR pairs for monitoring changes in forest ecosystems.</p>

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L-Band Radar Interferometry for Monitoring Boreal Forest Dynamics with an Extreme Temporal Baseline

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • V. G. Bondur,
  • T. N. Chimitdorzhiev,
  • A. V. Dmitriev

摘要

Abstract

This study demonstrates the feasibility of monitoring boreal forest height dynamics via L-band Differential Interferometric Synthetic Aperture Radar (DInSAR), leveraging ALOS-2 PALSAR-2 data acquired over an extremely long temporal baseline of 2114 days. Despite the challenge of temporal decorrelation, high-quality interferometric measurements were achieved through careful selection of an interferometric pair with exceptionally similar atmospheric and forest–ground surface conditions. Validation against reference data confirmed that the resulting map of scattering phase center displacements reflects real physical processes (height decrease due to logging and height increase due to growth) rather than decorrelation noise. The results prove the practical applicability of multi-temporal DInSAR pairs for monitoring changes in forest ecosystems.