Method for measuring ocean surface flow speed by use of real aperture radar

A technology of real aperture and surface flow, applied in the direction of measuring devices, using re-radiation, radio wave measurement systems, etc., can solve the problems that cannot achieve fast vector measurement of global ocean surface current velocity, and achieve the effect of fast global coverage

Inactive Publication Date: 2015-11-25
NAT SPACE SCI CENT CAS
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the defect that the existing observation means cannot realize fast vector measurement of

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  • Method for measuring ocean surface flow speed by use of real aperture radar
  • Method for measuring ocean surface flow speed by use of real aperture radar
  • Method for measuring ocean surface flow speed by use of real aperture radar

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Embodiment Construction

[0041] The present invention will be further described now in conjunction with accompanying drawing.

[0042] Compared with synthetic aperture radar, real-aperture radar (real-aperture radar) system is simpler, but its resolution is coarser. However, for open sea observations, the spatial resolution of real aperture radar can meet its application requirements. The observation swath of real aperture radar is wider, and the power requirement of real aperture radar is smaller or the signal-to-noise ratio is higher under the same transmission power, and the amount of data is smaller. It can work continuously all day long, and it is convenient to achieve fast global coverage.

[0043] For above-mentioned reason, adopt real aperture radar to measure ocean surface current velocity vector among the present invention, described real aperture radar comprises a secondary antenna, a set of transmitter unit and a set of receiver unit; Wherein, described reflector unit and receiving The tr...

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Abstract

The invention relates to a method for measuring an ocean surface flow speed by use of a real aperture radar. The real aperture radar employs a pen-form wave beam conical scanning system. The method comprises the following steps: carrying out first-time observation on a target at a first observation azimuth; carrying out second-time observation on the target at the first observation azimuth; calculating the radial speed of the target through data obtained through the observation of the target for the two times; the real aperture radar carrying out third-time observation on the target at a second azimuth; carrying out fourth-time observation on the target at the second observation azimuth; calculating the radial speed of the target through the data obtained through the observation of the target for the two times; and according to the radial speeds of the target, obtained respectively through calculation at the two observation azimuths, calculating a speed vector of an ocean surface flow.

Description

technical field [0001] The invention relates to a method for detecting ocean surface current velocity, in particular to a method for measuring ocean surface velocity by using real aperture radar. Background technique [0002] Ocean surface current is an important ocean dynamic environment parameter, which has important applications in global change, marine environment forecast, maritime navigation and engineering support, and the observation and forecast of ocean current has attracted more and more attention. Ocean current is the regular movement of water bodies in the ocean. It is one of the important parameters that affect and regulate global climate change. , have the effect of influence and restriction. At the same time, ocean surface currents are also important factors that determine the transport and distribution of biological and chemical components, such as biomass and pollutants. Ocean currents are formed by the driving forces on the upper water body of the ocean,...

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Application Information

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IPC IPC(8): G01S13/88G01S7/40
CPCG01S13/88G01S7/40
Inventor 鲍青柳董晓龙朱迪
Owner NAT SPACE SCI CENT CAS
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