Principles of Bistatic Radar NetworkDoppler observations are carried out using the main COBRA radar to evaluate the background winds within a precipitation area. This information is combined with Doppler-shift measurements (taken by the two bistatic receiver units) of oblique scattering due to precipitating particles. This enables rapid determination of a precise three-dimensional wind-velocity field for a large area.  
 
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![[ Page1 ]What is COBRA? /Development purpose of COBRA](images/HHH1_01.gif){kind=small}
![[ Page2 ]Features of COBRA](images/HHH1_02.gif){kind=small}
![[ Page3 ]Locations of the COBRA system and Network Link/Main specifications of the COBRA main radar](images/HHH1_03.gif){kind=small}
![[ Page4 ]Principles of Bistatic Radar Network](images/HHH2_04.gif){kind=small}
![[ Page5 ]dvantages of a Bistatic Radar Network](images/HHH1_05.gif){kind=small}
![[ Page6 ]Area of Bistatic Radar Network Observation](images/HHH1_06.gif){kind=small}
![[ Page7 ]Signal processing/Data Validation](images/HHH1_07.gif){kind=small}
![[ Page8 ]Operational mode/Example of COBRA Observation](images/HHH1_08.gif){kind=small}