ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2024, Vol. 21, No. 6, pp. 117-129

Application of differential interferometric SAR in short-term Earth’s surface changes detection

M.I. Babokin 1, 2 , P.E. Shimkin 2 , V.G. Stepin 2 
1 JSC Aerocon, Zhukovsky, Moscow Region, Russia
2 National Research University "Moscow Power Engineering Institute", Moscow, Russia
Accepted: 15.10.2024
DOI: 10.21046/2070-7401-2024-21-6-117-129
The features and main characteristics of a radar interferometric complex for Earth remote sensing based on a single-position space radar with a synthetic aperture antenna (SAR) operating in the single-pass forward-side observation mode are discussed in this paper. The conditions for operation and requirements for information support of the system for differential phase-difference signal processing, obtained from single-pass interferometric SAR (InSAR) data, are defined. The feasibility of the proposed approach to the construction of an InSAR complex for detecting rapidly occurring processes on the Earth’s (sea) surface based on the relative phase shift of surface signals captured at different times is verified using real radar images obtained from open remote sensing data. The potential of using the proposed scheme for building an interferometric complex with a single SAR in orbit for solving the tasks of acquiring additional information on the Earth’s surface state is demonstrated. Quasi-optimal algorithms for estimating the main target parameters are synthesized on the basis of methods of statistical estimation theory and optimal filtering.
Keywords: synthetic aperture radar (SAR), interferometric SAR (InSAR), differential interferometry method, experimental results
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