Radar sensing of the sea surface using small spacecraft

DOI: 10.35595/2414-9179-2022-1-28-383-393

View or download the article (Eng)

About the Authors

Igor N. Kartsan

Marine Hydrophysical Institute, Russian Academy of Sciences,
Kapitanskaya str., 2, Sevastopol, Russia;

Sevastopol State University,
University str., 33, Sevastopol, Russia;

Reshetnev Siberian State University of Science and Technology,
Krasnoyarsky Rabochy ave, 31, Krasnoyarsk, Russia;

E-mail: kartsan2003@mail.ru

Aleksander O. Zhukov

MIREA—Russian Technological University,
Vernadskogo ave, 78, Moscow, Russia;

Institute of Astronomy of the Russian Academy of Sciences,
Pyatnitskaya str., 48, Moscow, Russia;

FGBNU “Expert and Analytical Center”,
Talalikhina str., 33, build. 4, Moscow, Russia;

Joint Stock Company “Special Research of Moscow Power Engineering Institute”,
Krasnokazarmennaya str., 14, Moscow, Russia;

E-mail: aozhukov@mail.ru

Abstract

The possibility of using a constellation of small spacecraft as receiving satellites, when “highlighting” the sea surface from existing (navigational, communication) or specially created spacecraft—to form a wide-area (about 1 000 km) radar survey zone at a given resolution (about 10 m)—is under consideration. Such a constellation could provide operational monitoring of fast-moving atmospheric cyclones, measuring directly the parameters of storm waves (altitude and orbital velocity)—which would replace the existing constellation of microwave scatterometers, providing operational monitoring of the World Ocean surface in the 3 H (H—altitude of the satellite’s orbit) field of view with a resolution of about 10 km—but with calibration of the received images by wind speed and direction, which leads to huge errors when trying to introduce altitude calibration in the Small spacecraft have many advantages over large satellites. For example, they are relatively inexpensive to build, take minimal time from design to launch, are easily modified to solve a specific problem, and create less radio interference. The approach under consideration consists in redistribution of tasks to be solved between the constellation of satellites in orbit. High orbiting navigation satellites, for example, can be used as transmitter carriers (of the illumination of the surface) that use the necessary broadband signal with acceptable periodicity. Receivers of reflected signals are placed on board small spacecraft, and at formation of wide-band radar image of sea surface with necessary resolution ∼10 m (that only on order exceeds acceptable on small spacecraft size of receiving antennas)—in flight direction is necessary to use synthesized aperture of receiving antenna. This work has the character of “staged” research.

Keywords

small spacecraft, radar aperture synthesis, searchlight mode of view, radar imaging, sea surface sounding

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For citation: Kartsan I.N., Zhukov A.O. Radar sensing of the sea surface using small spacecraft. InterCarto. InterGIS. GI support of sustainable development of territories: Proceedings of the International conference. Moscow: MSU, Faculty of Geography, 2022. V. 28. Part 1. P. 383–393. DOI: 10.35595/2414-9179-2022-1-28-383-393