| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of frequencies to be used, and to highly precisely measure the speed vector of wind. SOLUTION: Each Doppler radar 1 is provided with an observation control information holding part 9 for holding transmitting time information generated by a transmission controller 31 in which a radar transmitting time different in each Doppler radar 1 is set, and radar transmission is operated at the time designated by the transmitting time so that radars with the same frequencies can be used in this system. Also, the Doppler radar can be operated as the receiving station of another Doppler radar 1 according to the set of the Doppler radars 1 and the switching timing of a switcher 12 decided by a mode switching control part 36 and a bi-static radar is temporarily formed. Moreover, the speed vectors measured by the plural Doppler radars 1 at a point to be observed in a block where covering areas are overlapped are weighted on the measuring precision and synthesized so that the speed vector at the point to be observed can be obtained.
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