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Migratory biological information monitoring method based on weather radar data

A weather radar and biological information technology, applied in the field of weather radar, can solve the problems of inaccurate biomass statistical estimation results, unsatisfactory accuracy of separation and extraction of migratory biological echoes, etc., so as to improve the accuracy and realize large-scale migratory flight. Monitoring and research, the effect of removing limitations

Active Publication Date: 2019-03-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

However, this algorithm only uses statistical information when extracting biological echoes, and in order to obtain highly layered information, it only uses data within 25 kilometers near the radar. Influence of insufficient filling of biological scatterers in antenna beams on biomass estimation
[0007] Therefore, the accuracy of separation and extraction of migratory biological echoes in the current migratory biological information monitoring scheme is not ideal, resulting in inaccurate biomass statistical estimation results

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  • Migratory biological information monitoring method based on weather radar data
  • Migratory biological information monitoring method based on weather radar data
  • Migratory biological information monitoring method based on weather radar data

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Embodiment Construction

[0048] Extracting migratory biological information from weather radar observation data mainly includes two parts: biological echo reflectivity data separation and biomass quantification. Due to the different statistical characteristics and spatial distribution characteristics of different types of echoes contained in the data observed by weather radar, these characteristics can be used to process weather radar data, separate biological echoes, and then further quantify biomass. Based on this, the present invention provides a method for monitoring migratory organisms based on weather radar data, the basic steps of which include:

[0049] Step 1, extracting biological echo reflectivity data from the echo reflectivity data of the weather radar;

[0050] Step 2. Considering the uneven distribution of biological migration heights and the widening of radar beams at long distances, remove the biological echo reflectance data whose proportion of the irradiation volume of the radar bea...

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Abstract

The invention discloses a migratory biological information monitoring method based on weather radar data. The method comprises the steps that creature echo reflection rate data is extracted from echoreflection rate data of a weather radar; nonuniform creature migratory height distribution intervals and distant radar wave broadening are taken into consideration; furthermore, the creature echo reflection rate obtained in step two can be converted to airborne migratory creature density in a corresponding region to count the creature amount of migratory creatures and the relation along with the variation of time of the creature amount. The method has the advantages that counting errors caused by non-fully filling of wave beams can be avoided to improve the extraction accuracy of the migratorycreature echo, and an effective means is provided for monitoring large-scale migratory creature number.

Description

technical field [0001] The invention belongs to the technical field of weather radar, in particular to a method for monitoring migratory biological information based on weather radar data. Background technique [0002] Biological migration is a major biological phenomenon in the human habitat and an important part of the aerial ecosystem. Hundreds of millions of birds, bats, and insects migrate over long distances every year, and the migration distance can reach hundreds of kilometers. Biological migration affects the diversity and stability of species, promotes the geographical spread and genetic differentiation of species, and leads to the large-scale spread of viruses and microorganisms. Migration is a special behavioral countermeasure for organisms to avoid unfavorable habitats. Large-scale quantitative observations of migratory organisms are of great significance for preventing outbreaks of pests and diseases and studying the evolution of ecosystems. [0003] As earl...

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Application Information

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IPC IPC(8): G01S13/88G01S13/95G01S7/41
CPCG01S7/411G01S7/415G01S13/88G01S13/95Y02A90/10
Inventor 胡程龙腾崔铠王锐李思伟曾涛
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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