Title:
LASER RADAR DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/189915
Kind Code:
A1
Abstract:
A laser radar device having provided therein a modulation unit (4) that: applies a frequency (fofs-fmove), being a Doppler shift frequency (fmove) corresponding to the travel speed of a moving body deducted from a preset offset frequency (fofs), to a frequency (ν) for a transmission seed light oscillated by a reference light source (2); pulse-modulates the transmission seed light having a frequency (ν + fofs - fmove); and outputs pulse light. An optical heterodyne receiver (8) optically multiplexes backscattered light, received by an optical antenna (7) and having a frequency (ν + fofs + fdop), and local oscillation light having a frequency (ν) and finds a beat signal representing the frequency difference (fofs + fdop) between the backscattered light and the local oscillation light.
Inventors:
NISHIOKA JUNYA (JP)
HARAGUCHI EISUKE (JP)
ANDO TOSHIYUKI (JP)
HARAGUCHI EISUKE (JP)
ANDO TOSHIYUKI (JP)
Application Number:
PCT/JP2014/065351
Publication Date:
December 17, 2015
Filing Date:
June 10, 2014
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01S17/58; G01P5/00; G01S17/95; G01W1/00
Domestic Patent References:
| WO2013094431A1 | 2013-06-27 |
Foreign References:
| JP2010151806A | 2010-07-08 | |||
| JP2011185773A | 2011-09-22 | |||
| JPS62123379A | 1987-06-04 | |||
| JP2000193558A | 2000-07-14 | |||
| JPH0238889A | 1990-02-08 | |||
| JP2009027517A | 2009-02-05 | |||
| JP2007003305A | 2007-01-11 | |||
| JPH04315080A | 1992-11-06 | |||
| JP2000275342A | 2000-10-06 |
Other References:
See also references of EP 3156823A4
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
Hideaki Tazawa (JP)
Hideaki Tazawa (JP)
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