Light wave radar apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsToshiyuki Ando, Yoshihito Hirano, Hiroshi Sakamaki, Toshio Wakayama, Syumpei Kameyama, Masashi Furuta, Masahiro Hagio
Life of this patent
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Abstract
A light wave radar apparatus includes a frequency deviation detecting unit 12 for detecting a frequency deviation fchirp of a light signal, and a weighted average processing unit 13 for determining a systematic error ΔVoffset from the frequency deviation fchirp detected by the frequency deviation detecting unit 12, and subtracts the systematic error ΔVoffset from a wind velocity VW calculated by a Doppler signal processing unit 11. As a result, the light wave radar apparatus can carry out a measurement of the wind velocity VW with a high degree of precision.
Claims9
A light wave radar apparatus comprising:
- a light emitting means for emitting a light signal;
- an optical guide means for propagating the light signal emitted out of said light emitting means;
- a light transmit-receive means for emitting the light signal propagated by said optical guide means toward a space, and for collecting scattered light resulting from a scattering of the light signal by the space;
- a wind velocity calculating means for combining a part of the light signal emitted out of said light emitting means and the scattered light collected by said light transmit-receive means to generate combined light, and for calculating a wind velocity in a sight line direction from the combined light;
- and
- a frequency deviation detecting means for detecting a frequency deviation of the light signal due to propagation by said optical guide means.
Dependencies are inferred from the claim text.