Title:
COHERENT LIDAR DEVICE AND LASER RADAR DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/045627
Kind Code:
A1
Abstract:
A coherence length measuring device (10) is provided to change settings so that a FFT gate width (Gw) and a pulse width (Pw) are shorter when a coherence length (Lc) is calculated from a spectrum (v) that is calculated by an FFT device (9) and the coherence length (Lc) is shorter than the FFT gate width (Gw). The FFT device (9) performs a frequency analysis on a received signal, output from an A/D converter (8), in units of FFT gates after the settings are changed, and then calculates the spectrum (v) of the received signal.
Inventors:
IMAKI MASAHARU (JP)
KOTAKE NOBUKI (JP)
KAMEYAMA SHUMPEI (JP)
KOTAKE NOBUKI (JP)
KAMEYAMA SHUMPEI (JP)
Application Number:
PCT/JP2013/060482
Publication Date:
March 27, 2014
Filing Date:
April 05, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01S17/95; G01S17/18; G01W1/00
Domestic Patent References:
| WO2006030502A1 | 2006-03-23 |
Foreign References:
| JPS631940A | 1988-01-06 | |||
| JPS633230A | 1988-01-08 | |||
| JP2000338246A | 2000-12-08 | |||
| JP2009162678A | 2009-07-23 |
Other References:
See also references of EP 2899567A4
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
Hideaki Tazawa (JP)
Hideaki Tazawa (JP)
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