Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2025, V. 22, No. 5, pp. 75-86
The use of single-pass side-view SAR in interferometric estimation of the Earth’s surface relief
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: 29.07.2025
DOI: 10.21046/2070-7401-2025-22-5-75-86
The paper discusses the design features and principal characteristics of an interferometric Earth remote sensing (ERS) system based on a monostatic spaceborne synthetic aperture radar (SAR) operating in a single-pass observation and a strictly side-view mode. The operational conditions and data requirements are defined for the differential phase processing system that utilizes measurements acquired from a single-pass interferometric SAR (InSAR) during multi-temporal observation. The viability of the proposed system configuration in constructing the InSAR complex for primary assessment of the Earth’s surface relief based on difference phase shift in multi-temporally separated signals using real radar holograms obtained from publicly available ERS dataset is verified. Experimental results are presented on displaying the relief of the Earth’s surface by applying multi-temporal phase difference processing of paired signals by radar interferometry method using a single-position single-pass space SAR operating in the side-view mode. The possibility of using the proposed scheme for constructing an interferometric complex with one SAR in orbit with multi-time organization of observation is demonstrated. It is shown that the method of radar interferometry presented in the work enables detailed and accurate measurement of the relief of the underlying surface of the Earth.
Keywords: synthetic aperture radar, SAR, interferometric SAR, InSAR, phase-difference interferometry method, experimental results
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