Typhoon elliptical wind field parametric simulation method based on remote sensing image features

A remote sensing image and simulation method technology, applied in the application field of satellite meteorological remote sensing information technology, can solve the problems of complex calculation of the maximum wind speed radius of typhoon, large uncertainty of calculation results, and large amount of calculation.

CN111723464APending Publication Date: 2020-09-29NANJING NORMAL UNIVERSITY
0 Cites 9 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-09-29

Smart Images

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

Abstract

The invention discloses a typhoon elliptical wind field parametric simulation method based on remote sensing image features. The invention relates to the field of satellite meteorological remote sensing information technology application. Through a remote sensing image analysis means and in combination with least square method ellipse fitting, ellipse center coordinates, ellipse long axis and short axis lengths and included angle parameters of the ellipse long axis and the x axis in the positive direction of the sea surface ellipse typhoon wind field are obtained through simulation, and the maximum wind speed space distribution range of the sea surface wind field in different directions is given. The method has the characteristics of simple operation and good real-time performance, the space-time heterogeneity distribution characteristic of the maximum wind speed radius of the sea surface wind field can be simulated, the obtained maximum wind speed point fitting ellipse can effectivelydescribe the space-time distribution range and orientation of sea surface wind field energy, and more accurate external drive can be provided for simulation of ocean dynamic processes such as storm surge and sea waves.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the application field of satellite meteorological remote sensing information technology, in particular to a typhoon elliptical wind field parametric simulation method based on remote sensing image features. Background technique

[0002] Typhoon is a natural disaster with high frequency, wide range of influence, strong suddenness and great damage. The disaster-causing factors of typhoon disasters include strong wind, heavy rain, storm surge, and sea waves, among which strong wind is an important part of wind disasters, and also an important driving factor of disaster-causing factors such as storm surge and sea waves (see: "Fang Weihua, Lin Wei. Facing Disasters A review of typhoon wind field models for risk assessment. Advances in Geographical Sciences, 2013,32(06):852-867.").

[0003] Regardless of whether it is calculating typhoon gale or constructing artificial typhoon, the maximum wind speed radius R max It is an important...

Examples

Embodiment Construction

[0087] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0088] This specific embodiment selects the Himawari-8 meteorological satellite images of the three phases of typhoon "Mangosteen" in 2018 as the remote sensing data source, and the image imaging time is 23:50 on September 15, 2018, and 00:00 on September 16, 2018. 00 minutes and 00:10 minutes, use ENVI IDL5.3 to write remote sensing image processing algorithm, matlab to write ellipse fitting algorithm, ArcGIS10.2 as vector data processing tool, use C# to develop executable program framework, carry out algorithm integration, and complete sea surface wind Remote sensing simulation of field anisotropy for maximum wind speed range.

[0089] A typhoon elliptical wind field parametric simulation method based on remote sensing image features, such as fig...