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1. (WO2017098623) LASER RADAR APPARATUS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/098623 International Application No.: PCT/JP2015/084609
Publication Date: 15.06.2017 International Filing Date: 10.12.2015
IPC:
G01S 17/95 (2006.01) ,G01S 17/58 (2006.01) ,G01P 5/26 (2006.01)
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17
Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88
Lidar systems, specially adapted for specific applications
95
for meteorological use
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17
Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02
Systems using the reflection of electromagnetic waves other than radio waves
50
Systems of measurement based on relative movement of target
58
Velocity or trajectory determination systems; Sense-of-movement determination systems
G PHYSICS
01
MEASURING; TESTING
P
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
5
Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
26
by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
Applicants:
三菱電機株式会社 MITSUBISHI ELECTRIC CORPORATION [JP/JP]; 東京都千代田区丸の内二丁目7番3号 7-3, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008310, JP
Inventors:
小竹 論季 KOTAKE, Nobuki; JP
今城 勝治 IMAKI, Masaharu; JP
亀山 俊平 KAMEYAMA, Shumpei; JP
Agent:
稲葉 忠彦 INABA, Tadahiko; JP
Priority Data:
Title (EN) LASER RADAR APPARATUS
(FR) APPAREIL RADAR LASER
(JA) レーザレーダ装置
Abstract:
(EN) Conventional laser radar apparatuses have a problem in that the SNR of wind velocity values degrades due to vibration. The laser radar apparatus according to the present invention is provided with: an optical oscillator that oscillates a laser beam; an optical modulator that modulates the laser beam oscillated by the optical oscillator; an optical antenna that emits the laser beam modulated by the optical modulator to the atmosphere, and receives scattered light from an object irradiated therewith as reception light; an optical receiver that subjects the reception light received by the optical antenna to heterodyne detection; a sensor that detects a vibration value of the optical antenna; and a signal processor that calculates a spectrum of the reception signal obtained by the heterodyne detection by the optical receiver, corrects the spectrum using the vibration value detected by the sensor, adds up the corrected spectra, and calculates the speed of the irradiated object from the resulting spectra.
(FR) Selon l'invention, les appareils radar laser classiques présentent un problème selon lequel le rapport signal sur bruit (SNR) de valeurs de vitesse du vent se dégrade en raison de vibrations. L'appareil radar laser selon la présente invention comprend : un oscillateur optique qui fait osciller un faisceau laser ; un modulateur optique qui module le faisceau laser oscillé par l'oscillateur optique ; une antenne optique qui émet le faisceau laser modulé par le modulateur optique dans l'atmosphère, et reçoit une lumière diffusée par un objet éclairé avec cette dernière en tant que lumière de réception ; un récepteur optique qui soumet la lumière de réception reçue par l'antenne optique à une détection hétérodyne ; un capteur qui détecte une valeur de vibration de l'antenne optique ; et un processeur de signal qui calcule un spectre du signal de réception obtenu par la détection hétérodyne par le récepteur optique, corrige le spectre à l'aide de la valeur de vibration détectée par le capteur, additionne les spectres corrigés, et calcule la vitesse de l'objet éclairé sur la base des spectres résultants.
(JA) 従来のレーザレーダ装置は、動揺により風速値のSNRが劣化する課題があった。 本発明のレーザレーダ装置は、レーザ光を発振する光発振器と、光発振器が発振したレーザ光を変調する光変調器と、光変調器が変調したレーザ光を大気へ放射し、被放射物からの散乱光を受信光として受信する光アンテナと、光アンテナが受信した受信光をヘテロダイン検波する光受信器と、光アンテナの動揺値を検出するセンサと、光受信器がヘテロダイン検波することにより得られた受信信号のスペクトルを算出し、センサが検出した動揺値を用いてスペクトルを補正し、補正したスペクトルを積算し、積算したスペクトルから被放射物の速度を算出する信号処理器とを備える。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
CN108369276EP3388866US20180356440