Ocean internal wave forecast method based on synthetic aperture radar image and internal wave model

A technology of synthetic aperture radar and prediction method, applied in the fields of physical oceanography and information processing, which can solve the problems of inaccurate and unpredictable speed, wavelength, amplitude, etc.

CN102253385AInactive Publication Date: 2011-11-23INST OF ELECTRONICS CHINESE ACAD OF SCI
0 Cites 19 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2011-11-23
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an ocean internal wave forecast method based on a synthetic aperture radar image and an internal wave model and relates to the technical field of physical oceanography and information processing. The ocean internal wave forecast method comprises the following steps of: building a two-dimensional transmission model based on the ocean internal wave according to an ocean internal wave parameter inverted from an ocean internal wave image of a satelliteborne synthetic aperture radar as well as submarine topography data and pycnocline historical distribution of a region where an internal wave exist; forecasting a position, a shape, a speed, an amplitude and wavelength information of the ocean internal wave after a certain time; and drawing an internal wave ridge line distribution graph at a certain moment when forecast is required according to the acquired information. The internal wave forecast method is simple and reliable.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of physical oceanography and information processing, and relates to an ocean internal wave prediction method based on a synthetic aperture radar image and an internal wave model. Background technique

[0002] Internal ocean waves are an ocean phenomenon. As long as the seawater density is stratified stably and there is a disturbance source that makes the water particle of the stratified ocean leave the equilibrium position, the water particle will oscillate under the action of the restoring force, thus causing the density surface to fluctuate. Because the density distribution of seawater is often in an uneven state, and air pressure, wind, topography, tides, currents, etc. can cause disturbances, internal waves in the ocean are a common phenomenon.

[0003] Synthetic Aperture Radar (SAR) is an active microwave remote sensing method developed in the late 1950s. Compared with other remote sensing methods, it ...

Examples

Embodiment Construction

[0014] The method of the invention is an ocean internal wave prediction method based on a synthetic aperture radar image and an internal wave model. Based on the ocean internal wave parameters retrieved from space-borne synthetic aperture radar ocean internal wave images, as well as the submarine topography data and the historical distribution of the densocline in the area where the internal waves are located, based on the two-dimensional model of ocean internal waves, it is predicted that the The position, shape, velocity, amplitude, wavelength and other information of ocean internal waves.

[0015] The detection process of the inventive method is as figure 1 Shown as:

[0016] 1. Use the synthetic aperture radar image ocean internal wave parameter inversion method to calculate the amplitude, wavelength, velocity and other parameters of the ocean internal wave in the SAR image; the distribution of the densocline in the area where the ocean internal wave is located is histori...