Title:
Coherent rider device
Document Type and Number:
Japanese Patent JP6301040
Kind Code:
B2
Abstract:
Included are: a fast Fourier analyzer (1301) to obtain a received spectrum for each of time gates by performing fast Fourier transform on a received signal for each of the time gates; a signal integration determiner (1302) to determine the necessity of integration of the received spectrum obtained by the fast Fourier analyzer (1301) for each of the time gates; a spectrum integrator (1304) to perform integration of the received spectrum obtained by the fast Fourier analyzer (1303) depending on a determination result by the signal integration determiner (1302); a frequency shift calculator (1306) to calculate an amount of a frequency shift with respect to the laser light emitted by the optical transceiver (11) from the received spectrum integrated by the spectrum integrator (1304); and a wind speed calculator (1307) to calculate the wind speed in a direction in which the laser light is emitted by the optical transceiver (11) from the amount of the frequency shift calculated by the frequency shift calculator (1306).
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Inventors:
Katsuji Imajo
Otake Takeshi
Shunpei Kameyama
Otake Takeshi
Shunpei Kameyama
Application Number:
JP2017563448A
Publication Date:
March 28, 2018
Filing Date:
January 27, 2016
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G01S17/58; G01P5/26; G01S7/486; G01S17/95
Domestic Patent References:
| JP2014035276A | ||||
| JP2004285858A | ||||
| JP2014081331A | ||||
| JP2005009956A |
Foreign References:
| WO2015052839A1 | ||||
| US20110043785 | ||||
| EP2955542A1 |
Attorney, Agent or Firm:
Hideaki Tazawa
Hamada Hatsune
Nakashima Shigeru
Tatsuya Sakamoto
Tsujioka Masaaki
Kazuma Inoue
Hamada Hatsune
Nakashima Shigeru
Tatsuya Sakamoto
Tsujioka Masaaki
Kazuma Inoue