Ocean internal wave velocity monitoring method

Abstract

The invention relates to an ocean internal wave velocity monitoring method. The method particularly comprises the following steps that S1, remote sensing images comprising internal wave information are preprocessed; S2, a preprocessed SAR image and a preprocessed MODIS image are enhanced through a standard tensile method; S3, the internal wave position and the distribution message are extracted from the enhanced MODIS image and the enhanced SAR image; S4, spatial interpolation is carried out on an MODIS internal wave crest line with low precision; S5, the internal wave velocity is extracted; S6, the precision of the internal wave velocity is verified. The ocean internal wave velocity monitoring method has the advantages that the internal wave velocity is extracted through the satellite microwave remote sensing image and the optical remote sensing image, the extraction precision is high, the cost is low, time and labor are saved, multiple data sources are provided, the spatial distribution of the internal wave velocity within a certain sea area can be obtained, and then research on the aspect of correlation between the internal wave velocity and environmental factors can be expanded.

Description

technical field [0001] The invention relates to the field of ocean monitoring, in particular to a method for monitoring ocean internal wave velocity. Background technique [0002] Ocean remote sensing technology is a comprehensive detection technology that installs sensors on working platforms such as artificial satellites, spacecraft, and balloons to measure and record ocean characteristics over a long distance. It is a high-tech integrating space science, electronics, oceanography, and optics. Its principle is based on the fact that the ocean continuously radiates electromagnetic wave energy to the surroundings. At the same time, the sea surface also reflects and scatters the electromagnetic wave energy illuminated by the sun and artificial radiation sources. The designed sensor accepts, records, transmits and processes these energies to obtain information images or data related to ocean characteristics. [0003] Ocean internal wave is an important seawater movement, whic...

AI Technical Summary

Problems solved by technology

Disadvantages: small range, long time, high cost, greatly affected by weather conditions

On-site measurement needs to mobilize ships and arrange personnel to go out to sea to observe on-site, which is costly and affected by weather conditions

The advantage of buoy observation is that the observation time is long, but the disadvantage is that the current buoy data is very limited

[0014] To sum up, there is an urgent need for a method for monitoring ocean internal wave velocity with a wide measurement range, high precision, multiple data sources, and not limited by geographical location. There is no report on this method that can realize the above functions.

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