Basic Principles of LIDAR Speed Measurement Flashcards
Gordon Gould designed a laser based on Einstein’s concepts in 1957, by the first working LASER was reported to be built by ______________ ____________ by 1960.
Theodore Maiman
Light, which is the functional basis for LASERs, is measured by _________________.
wavelength
A beam of light is infinite, unless it is ________, ____________ or ___________.
- reflected
- refracted
- absorbed
The acronym LASER stands for:
Light Amplification by Stimuluted Emission of Radiation
The acronym LIDAR stands for:
Light Detection And Ranging
The wavelength of the speed LASER is approximately ______ nanometers.
904
Light travels 982,080,000 ______ per second.
feet
What is the speed of light?
186,000 miles per second (186,282)
Speed LASERs are ___’s which is the only safe classification.
1
________ divided by time equals speed. This result gives us the target’s speed.
Distance
________ equals distance divided by time.
____ distance / time
speed
What are the components of a LIDAR?
- Lens
- Trigger
- Sight
- Display
- Grip
The most important part of the LIDAR is the _______. If damaged, the unit may not perform correctly.
Lens
What are the steps of testing the LIDAR?
- Power-up
- Sight Alignment
- Distance test
What must readings during LIDAR testing be?
+/- 1 ft.
What are the steps of proper tracking history?
- Visual estimation
- Aim sight at front of target vehicle
- Engage trigger
- Confirm acquisition tone
Rather than a RADAR, LIDAR is _______ specific.
target
True or False:
There are conditions that may reduce the operational range of the LIDAR device; however, they will not affect the accuracy.
True
What are some additional operational considersation for LIDAR?
> Hold the unit steady
> Avoid direct sunlight
> Be mindful of weather conditions
> Receding vehicles (moving away) will typically provide a better speed reading
