Unlock instant, AI-driven research and patent intelligence for your innovation.

Rainfall analysis model construction method, construction system and analysis method based on radar map

A technology for analyzing models and building methods, applied in image analysis, image enhancement, image data processing, etc., can solve problems such as very little research and large errors in rainfall measurements in local areas, and achieve the effect of improving quality control

Pending Publication Date: 2020-02-04
INSPUR QILU SOFTWARE IND
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The new generation of Doppler weather radar adopts a single Z-R relationship and ignores these rainfall details, resulting in large errors in rainfall measurements in local areas
[0005] It can be seen that the existing technology mainly focuses on the quality control of radar information on rainfall observation point data and the prediction of rainfall direction by radar information, and there is very little research on the combination of measured rainfall and radar information to calibrate parameters

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rainfall analysis model construction method, construction system and analysis method based on radar map

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A method for building a rainfall analysis model based on radar charts of the present invention comprises the following steps:

[0056] S100. Obtain radar images at different times. For each radar image, perform geographical location registration on the radar image and the GIS map through a multi-point registration method. After registration, the coordinates of each point in the radar image are matched with the GIS map coordinates;

[0057] S200. Divide each registered radar image grid into multiple fragment radar images, and each fragment radar image is matched with at least one rainfall measurement station;

[0058] S300. For each fragmented radar map, extract the radar echo data of the fragmented radar map, and collect the actual rainfall measured by all the rainfall measuring stations corresponding to the fragmented radar map, and collect the fragmented radar according to time sequence The radar echo data corresponding to the map and the actual rainfall are stored as...

Embodiment 2

[0076] The invention provides a radar chart-based rainfall analysis model building system, which includes a coordinate matching module, an area division module, a data collection module, a storage module, a model building module and a model training module.

[0077] The coordinate matching module is used to perform geographic location registration on the radar image and the GIS map through the multi-point registration method, and the coordinates of each point in the radar image are matched with the coordinates of the GIS map after registration.

[0078] The area division module is used to divide each registered radar map grid into multiple fragment radar maps, and each fragment radar map is matched with at least one rainfall measurement station. The area division module uses the clip tool of ArcGIS to perform grid division on the radar map.

[0079] In the radar image, the gradual change from blue to purple indicates that the echo intensity varies from small to large. Based on...

Embodiment 3

[0093] A kind of rainfall analysis method based on radar map of the present invention, comprises the steps:

[0094] (1) construct the rainfall analysis model based on the method for constructing the rainfall analysis model disclosed in embodiment 1, obtain the regional rainfall analysis model and the period rainfall analysis model;

[0095] (2) Based on the regional rainfall analysis model, the radar echo data and actual rainfall corresponding to the regional rainfall analysis model are obtained as test samples, and the test samples are input into the corresponding regional rainfall analysis model to obtain the corresponding rainfall analysis of the region;

[0096] Based on the period rainfall analysis model, the radar echo data and actual rainfall corresponding to the rainfall analysis model in this period are obtained as test samples, and the test samples are input into the corresponding period rainfall analysis model to obtain the corresponding rainfall analysis in this pe...

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

No PUM Login to View More

Abstract

The invention discloses a rainfall analysis model construction method, a rainfall analysis model construction system and a rainfall analysis model analysis method based on a radar map, belongs to thefield of rainfall analysis, and aims to solve the problem of how to accurately perform rainfall analysis in combination with actually measured rainfall and a radar map. The construction method comprises the steps of conducting geographic position registration on the radar map and a GIS map through a multi-point registration method; storing the radar echo data corresponding to the fragment radar map and the actual rainfall into one group respectively; constructing a rainfall analysis model; taking radar echo data at different times corresponding to the fragment radar map and actual rainfall astraining samples to obtain a regional rainfall analysis model; and taking the radar echo data corresponding to the time and the actual rainfall as training samples to obtain a time period rainfall analysis model. The system comprises a coordinate matching module, a region division module, a data acquisition module, a storage module, a model construction module and a model training module. A regional rainfall analysis model and a time period rainfall analysis model are obtained through the method.

Description

technical field [0001] The invention relates to the field of rainfall analysis, in particular to a method for constructing a rainfall analysis model based on radar charts, a construction system and an analysis method. Background technique [0002] The data of automatic rainfall stations has always been the main basis for accurately reflecting the actual rainfall. However, there is no specific standard for the deployment density of automatic rainfall stations in my country, and the rationality of the tens of thousands of rainfall stations that have been set up has not been scientifically determined. It has been demonstrated that after many automatic rainfall stations have undergone several migrations, the geographical location information has been inaccurate. In addition, the measurement of rainfall is greatly affected by the wind field, especially when the tipping bucket rain gauge is in heavy rain, due to the inertia of the tipping bucket turning, it is too late to turn over...

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
no application Login to View More
IPC IPC(8): G06F16/21G06F16/215G06F16/22G06F16/27G06F16/29G06T7/90
CPCG06F16/212G06F16/215G06F16/2291G06F16/27G06F16/29G06T7/90G06T2207/10044Y02A90/10
Inventor 欧阳彤宋海涛赵维波尹曦萌颜丙洋
Owner INSPUR QILU SOFTWARE IND