Wind Field Reconstruction Based On The Of Pairs Jiduopule Weather Radar Data, And Software Development, | Posted on:2005-03-13 | Degree:Master | Type:Thesis | Country:China | Candidate:H B Yu | Full Text:PDF | GTID:2190360122985428 | Subject: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 | Related items |
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