44 相関法を用いたリアルタイム多点同時速度ベクトル計測システムの開発

抄録

This report is on a new velocity measurement system which can measure and display velocity vectors in real-time by processing the B/W video signal. Its measuring rate is 1/60 sec for 16 areas. The method of the determination of velocity vector is a 2-dimensional correlation technique of binary video data.
The system is realized by developing a gate-array (LSI) which calculates 1-dimensional correlation coefficients of horizontal 16 points and a hardware which uses the LSI for processing the video signal to calculate correlation coefficients of horizontal/vertical 256 points at the rate of the video field.
This report shows an evaluation of the system by using deviation analysis. And some measurement examples of velocity distribution and transitional velocity are presented.