Two-position quasi-mirror radar of the sea surface: Principles of microwave scattering and possibilities of solving Oceanology problems from space

Pereslegin, S. V.; Karpov, I. O.; Khalikov, Z. A.

doi:10.1134/s0001437017050149

“…It remains to cite the data of the proposed promising radar system, solving the problem of operational monitoring of the sea surface state in order to diagnose and forecast dangerous phenomena − storm waves and gravity seismic waves, forming tsunamis [Pereslegin, 2009;Pereslegin, Halikov, 2011;Pereslegin et al, 2017].…”

Section: Fig 4 Sizes Of Vertical Antenna Bases Formed By the Grouping...mentioning

confidence: 99%

“…In the region where the coefficient , the horizontal resolution r y ~ (10−30) m at a signal width of 300 MHz. Three-dimensional scattering diagrams are constructed for different values of wind speed (W), radio wavelength (λ), and for coaxial (HH) and crosstalk (HV) polarization components of the reflected signal [Pereslegin et al, 2017]. Fig.…”

Section: Fig 4 Sizes Of Vertical Antenna Bases Formed By the Grouping...mentioning

confidence: 99%

“…Processing of "paired" RHGs in IRSA should be considered as a special group when forming velocity fields, which include sea objects: storm waves, currents and waves of seismic origin (including relatively short waves arising above the earthquake origin) [Pereslegin, Sinitsyn, 2011;Pereslegin, Halikov, 2014;Pereslegin et al, 2021]. Finally, two-position quasi-mirror radars, which allow generating bright radar images of sea surface with wide field of view (~1000 km) and average resolution (10−30) m, should be referred to a separate perspective group [Pereslegin, 2009;Pereslegin, Halikov, 2011;Pereslegin et al, 2017]. Radars forming "level" radars with the same view area and resolution of about 1 km should be referred to the same group − they could serve as an extremely necessary for many applications "panoramic radio altimeter" [Pereslegin, Halikov, 2010].…”

Section: Introductionmentioning

confidence: 99%

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Radar sensing of the sea surface using small spacecraft

Карцан

¹

,

Zhukov

²

2022

ICIGIS

4

0

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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.

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“…It remains to cite the data of the proposed promising radar system, solving the problem of operational monitoring of the sea surface state in order to diagnose and forecast dangerous phenomena − storm waves and gravity seismic waves, forming tsunamis [Pereslegin, 2009;Pereslegin, Halikov, 2011;Pereslegin et al, 2017].…”

Section: Fig 4 Sizes Of Vertical Antenna Bases Formed By the Grouping...mentioning

confidence: 99%

“…Processing of "paired" RHGs in IRSA should be considered as a special group when forming velocity fields, which include sea objects: storm waves, currents and waves of seismic origin (including relatively short waves arising above the earthquake origin) [Pereslegin, Sinitsyn, 2011;Pereslegin, Halikov, 2014;Pereslegin et al, 2021]. Finally, two-position quasi-mirror radars, which allow generating bright radar images of sea surface with wide field of view (~1000 km) and average resolution (10−30) m, should be referred to a separate perspective group [Pereslegin, 2009;Pereslegin, Halikov, 2011;Pereslegin et al, 2017]. Radars forming "level" radars with the same view area and resolution of about 1 km should be referred to the same group − they could serve as an extremely necessary for many applications "panoramic radio altimeter" [Pereslegin, Halikov, 2010].…”

Section: Introductionmentioning

confidence: 99%

Untitled

2022

ICIGIS

0

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Сборник включает материалы, представленные на Международную конференцию «ИнтерКарто. ИнтерГИС 28». В статьях рассматриваются теоретические и методические аспекты геоинформационного и картографического обеспечения экологических, экономических и социальных вопросов устойчивого развития, геоинформатики, картографии, создания атласов, дистанционного зондирования Земли. Также рассматриваются аспекты картографического и геоинформационного обеспечения решения вопросов общественного здоровья, сельского хозяйства и землепользования, туризма, природного и культурного наследия, исторической географии и географического образования. Сборник выпускается 1 раз в год, начиная с 1994 г.

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