| 摘要 |
PROBLEM TO BE SOLVED: To expand acquisition ranges up to a height where noise gets mixed in a received signal in a wind profiler, even when noise arising from transmission/reception switching gets mixed in.SOLUTION: Provided is a signal processing device 103 in a wind profiler for switching transmission/reception after radiating a pulse-shaped electromagnetic wave into a space, receiving an electromagnetic wave reflected from an observation object, and measuring a wind velocity from the Doppler frequency of the received electromagnetic wave, the device comprising: an unnecessary data determination unit 10 for capturing a timing signal that switches transmission/reception, and detecting a prescribed length of time from the timing signal as a noise section in which switching noise occurs due to the switching of transmission/reception; and an attenuation unit for attenuating a received signal in the noise section and converting the received signal in the noise section into practically invalid data.SELECTED DRAWING: Figure 7 |
