UDC 528.71
ESTIMATION OF APPROXIMATION ACCURACY FOR STRICT MODEL OF SPACE IMAGING BY RATIONAL POLYNOMIALS
V. I. Poshekhonov, Ph.D. (Tech.), leading researcher, scientific research institute «Photon», RSREU, Ryazan, Russia;
orcid.org/0000-0001-8728-455X, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
A. E. Kuznecov, Dr. Sc. (Tech.), first deputy director, scientific research institute «Photon», RSREU, Ryazan, Russia;
orcid.org/0000-0002-4772-6939, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
M. M. Egin, junior researcher, scientific research institute «Photon», RSREU, Ryazan, Russia;
orcid.org/0000-0003-2579-8250, e-mail This email address is being protected from spambots. You need JavaScript enabled to view it.
In space systems for earth remote sensing the images of standard processing levels 1 and 2A are followed by rational polynomial coefficients (RPC) that introduce the relation between planar and geodetic pixel coordinates on an image. RPCs approximate strict model of imaging camera and require no deep understanding of its interior and exterior orientation elements. The aim of this paper is to develop the tools for estimation of approximation accuracy for strict imaging model by RPCs and to validate these tools on images of processing levels 1 and 2A acquired from «Resurs-P» satellite series. Based on the conducted experimental research on real data the approximation accuracies for a strict imaging model were estimated for «Geoton» and KShMSA-SR/VR devices. Practical recommendations for end-users regarding the use of RPC coefficients for refined photogrammetric processing were formulated
Key words: geocoding, imaging RPC model, strict model for scanner imaging, earth remote sensing, processing levels of earth remote sensing data, «Resurs-P» satellite.