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Laser Distance Ranging |
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◆ Knowledge
Introduction |
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Laser rangefinder is the
instrument that is used
for distance
measurement. It is
widely used in science technology,
production, construction
and many other fields
with its advantages of
high accuracy, high
resolution, strong
anti-interference
ability, small, light
weight etc.
In this experiment
pulse laser as a light
source, a laser through
the plane mirror in the
distance, the laser beam
reflected is received by
the photoelectric
element, then
oscilloscope to measure
and record the time
difference from the
transmitter to the
receiver, so as to
calculate the distance
between the laser and
the mirror-half of the
light and the round trip
time. The students can
understand the principle
of laser rangefinder and
grasp the method of
distance measurement
with laser rangefinder. |
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Main points:
Special advantages of laser
Methods to laser distance
measuring
Principle of pulsed laser
distance measuring
The concept of laser pulse
width and frequency |
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Experimental device |
Pulse shape |
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◆ Related
Courses |
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Principles of Laser Technology and
Application, Optical Measurement
Technology and Application, Modern
Laser Engineering Application
Technology, Laser Devices,
Application Optics |
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◆ Basic
Configurations |
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Name |
Specifications |
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laser |
Q-switched laser, A
variety of wavelength to
select（Include current
source） |
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Spectroscope |
50% transmissivity, 50%
reflectivity |
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Photodetector |
Detection wavelength
coverage: 200-1100nm,
Rise time: 1ns |
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Oscilloscope |
Bandwidth: 50MHz,
Sampling frequency:
5GSa/s |
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Others |
Plane mirror, adjusting
bracket, baffle, laser
goggle etc. |
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◆ Expanding Experiments |
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◆ Applications of Instrument |
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Michelson Interferometer
Laser distance measuring
with interferometry
Research on Cavity ring down
spectroscopy technology |
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Teaching experiment and
research applications
Artificial earth satellite
observation and positioning
Topographic survey, aerial
photogrammetry |
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