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Wind Field Reconstruction Based On The Of Pairs Jiduopule Weather Radar Data, And Software Development,

Posted on:2005-03-13Degree:MasterType:Thesis
Country:ChinaCandidate:H B YuFull Text:PDF
GTID:2190360122985428Subject:Atmospheric physics and atmospheric environment
Abstract/Summary:PDF Full Text Request
My paper introduces reference frame of bistatic Doppler weather radar, basic geometry connection and the equation of bistatic Doppler radar from the theory of bistatic Doppler weather radar . Bistatic wind fields synthesis equations are analysed and I educes target location equation in receiver including conversion from ground reference frame to one defined by us. The three wind fields components in a domain of 16km X 16km X 10km are analysed with simulated radar data so as to reconstruct uniform and shift wind fields. The result shows the effect of uniform wind fields rebuild is good , however the vertical velocity in shift one is not ideal . It is found the azimuth range of receiver is so wide that it can receive echos from different orient. Which affects the data quality of wind fields in receiver. And a standard deviation margin varying between 2 ms-1 and 3 ms-1 within a scattering angle limit of 40 to 150 .Data quality control including sidelobe contamination , data's filling and smoothing, Nyquist velocity of bistatic Doppler radar, interpolation of velocities from a polar grid to a Cartesian grid and problems found during simulating data and solusion to them. The sidelobe contaminatin index is determined by using variational methods . Coordinate conversion with linear interpolation.Moreover terminal system is empoldered mainly by VC++6.0 Combining with Matlab . Two- and three-dimensional graphics of bistatic Doppler radar system can be showed by using Matlab's graphics function.The vertical velocity is going to be estimated by using a variational analysis method.
Keywords/Search Tags:a bistatic Doppler weather radar network, wind fileds reconstruction, quality control
PDF Full Text Request
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