PROBLEM TO BE SOLVED: To improve estimation accuracy of a two-dimensional air flow vector, and further broadening an air flow estimation range.SOLUTION: A gas measurement device 1 includes: a measurement unit 10 that radiates light toward first and second directions in atmosphere, receives reflection light from the directions, and measures a wind velocity in an optical axis direction for each of the first and second directions on the basis of a Doppler shift amount of a frequency between each radiated light and each reflection light; a storage unit 20 configured to store a wind velocity value measured by the measurement unit 10; and a processing unit 30 that based on a current wind velocity value in the optical direction for each of the first and second directions measured by the measurement unit 10 and a past wind velocity value stored in the storage unit 20, defines a polynomial expression for estimating a wind velocity on a line containing measurement points of the wind velocity values, externally inserts two wind velocities on the line with the polynomial expression and estimates a two-dimensional air flow vector on the line on the basis of the externally inserted wind velocities.SELECTED DRAWING: Figure 1
【課題】2次元気流ベクトルの推定精度を向上させ、しかも気流推定範囲をより広範囲とすること。【解決手段】気体計測装置1は、大気中の第1及び第2の方向に向けて光を放射し、これらの反射光を受信し、各放射した光と反射光との間の周波数のドップラーシフト量に基づき第1及び第2の方向の光軸方向の風速を計測する計測部10と、計測部10で計測された風速値を記憶する記憶部20と、計測部10で計測した第1及び第2の方向の光軸方向の現在の風速値及び記憶部20で記憶された過去の風速値に基づき、これらの風速値の計測点を含んだ線上の風速を推定する多項式を定め、この多項式を用いて線上の2点の風速を外挿し、外挿した風速に基づき線上の2次元気流ベクトルを推定する処理部30とを具備する。【選択図】図1
REMOTE AIR FLOW MEASUREMENT DEVICE, REMOTE AIR FLOW MEASUREMENT METHOD AND PROGRAM
遠隔気流計測装置、遠隔気流計測方法及びプログラム
2017-04-06
Patent
Elektronische Ressource
Japanisch
IPC: | G01S RADIO DIRECTION-FINDING , Funkpeilung / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK , Messen der Linear- oder Winkelgeschwindigkeit, der Beschleunigung, der Verzögerung oder des Stoßes / G01W METEOROLOGY , Meteorologie |
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