4.8 Method for Measurement of Movement Velocity Vector of Diffuse Objects
351
Fig. 4.20 Optical schemes for determining velocity sign (a) and measurement of velocity vector
of diffusive objects (b). Reprinted from [2] with permission
dα
2
=
2(|
υ 2 | − |
υ|)(|
υ 1 | − |
υ|)
|δ
υ|
4
dυ
2
(4.80)
where dυ
2
is the dispersion of module determination |
υ|, |
υ 1 | and |
υ 2 |.
It was supposed that |δ
υ| was determined with better accuracy than || υ|, || υ 1 | and
|| υ 2 |.
A scheme was established for experimental check of a method for determining
velocity sign of the diffuse object. In this scheme, a rotating with a frequency matt
disk with a diameter of 15 cm was used as an object.
Unexpanded laser beam illuminated a small area at a distance r = 18 mm from
the center, moving with a linear velocity of υ = ω 0 r .
351
Fig. 4.20 Optical schemes for determining velocity sign (a) and measurement of velocity vector
of diffusive objects (b). Reprinted from [2] with permission
dα
2
=
2(|
υ 2 | − |
υ|)(|
υ 1 | − |
υ|)
|δ
υ|
4
dυ
2
(4.80)
where dυ
2
is the dispersion of module determination |
υ|, |
υ 1 | and |
υ 2 |.
It was supposed that |δ
υ| was determined with better accuracy than || υ|, || υ 1 | and
|| υ 2 |.
A scheme was established for experimental check of a method for determining
velocity sign of the diffuse object. In this scheme, a rotating with a frequency matt
disk with a diameter of 15 cm was used as an object.
Unexpanded laser beam illuminated a small area at a distance r = 18 mm from
the center, moving with a linear velocity of υ = ω 0 r .