A Remote Sensing Extraction Method of Shallow Water Depth by Combining Ocean Wave Features and Spectral Features
A technology of spectral features and extraction methods, which can be used in open-air water source surveying, instrumentation, mapping and navigation, etc., and can solve the problem of high cost of continuous multi-view remote sensing image acquisition.
Active Publication Date: 2020-11-20
SECOND INST OF OCEANOGRAPHY MNR
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Based on this principle, there is currently a method for extracting ocean wave propagation velocity and frequency from multi-view optical remote sensing images that are continuously shot (with an interval of 10 seconds), and then for bathymetry, but the acquisition cost of continuous multi-view remote sensing images is very high
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0064] Experiments are carried out according to the shallow water depth remote sensing extraction method of the fusion of wave features and spectral features of the present invention, such as figure 1 As shown, it specifically includes the following steps:
[0065] (1) Obtain a high-resolution optical remote sensing image containing sea surface and wave information, and use a geometric correction method for remote sensing image positioning and registration, so that it has a more accurate geographic spatial reference:
[0066] Select one scene of the high-resolution optical remote sensing image in the work area, and check the clarity and integrity of the wave texture information on the remote sensing image. Then carry out the geometric correction of the remote sensing image, usually using the method of the same name of the ground control point, that is, select a certain number of the same ground object points in the land area on the remote sensing image, and establish the cont...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a novel shallow sea water depth remote sensing extraction method fusing sea wave characteristics and spectrum characteristics. Aiming at the topographic surveying and mapping requirements of the shallow sea area, the shallow sea water depth extraction method based on the single-scene high-resolution optical remote sensing image is established by utilizing the sea wave characteristic information and the spectrum characteristic information on the high-resolution multispectral remote sensing image according to the shallow water wave theory and the water multispectral radiation transmission theory, so that the water depth information of the shallow sea area of the whole-scene remote sensing image can be extracted simply by one high-resolution optical remote sensing imageunder the support of no field actual measurement water depth data, the shallow sea water depth measurement cost and the dependence on external parameters are reduced. In addition, the shallow sea water depth remote sensing extraction method is an innovation in the application aspect of the remote sensing information technology, is a beneficial supplement for the near-shore shallow sea water depthmeasurement, and has great practical value.
Description
technical field [0001] The invention relates to the field of marine remote sensing technology application and seabed topographic surveying, in particular to a method capable of extracting shallow sea depth information as desired by using wave feature information and spectral feature information in high-resolution multi-spectral remote sensing images. Background technique [0002] Seabed topographic mapping is the first step in exploring and studying the ocean, the first condition for developing and protecting the ocean, and an urgent need for oceanographic research today. Before the invention of the echo sounder, the water depth was mainly measured by the sounding rod and the sounding hammer, and the measurement accuracy was poor. After the echo sounder appeared in the 1920s, the drawing of sea charts in the modern sense was realized. However, the early echo sounders were launched with a single beam, and one launch could only obtain the water depth directly below the survey...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01C13/00
Inventor 张华国王隽厉冬玲史爱琴楼琇林傅斌初梦如
Owner SECOND INST OF OCEANOGRAPHY MNR