A.G. Vinogradov1, A.N. Teokharov2

1,2 “Academician A.L. Mints Radiotechnical Institut” JSC (Moscow, Russia)
1 A. M. Obukhov Institute of Atmospheric Physics of RAS (Moscow, Russia)
 

Effect of Earth's atmosphere inhomogeneity on signal coherence in a bistatic space SAR system observing Earth’s surface is analyzed. The analysis is carried out in the approximation of the geometrical optics. The residual phase breaking signal coherence is estimated for both regular and random variation of dielectric permittivity of Earth's troposphere and ionosphere. Using these estimates, the feasible synthesis time is evaluated for signals of X, L, UHF, and VHF bands for both, strongly and weakly disturbed atmosphere.

Vinogradov A.G., Teokharov A.N. Estimation of coherence of the signal reflected from objects on Earth's surface in bistatic space SAR system. Science Intensive Technologies. 2022. V. 23. № 5. P. 41−48. DOI: https://doi.org/10.18127/j19998465-202205-06 (in Russian)

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