LiDAR

Question 1

LASER full form

Answer 1

 LIGHT
 AMPLIFICATION by
 STIMULATED
 EMISSIONS of
 RADIATION

Question 2

Laser Speed Measurement Formula

Answer 2

S= d / t

Question 3

Laser Speed Measurement

Answer 3

 Speed of light is constant (300,000
km/second) – AKA: The Universal Constant
 Time is measured in nanoseconds
 Distance is measured in nanometers

Question 4

Common Laser instruments

Answer 4

◦ LTI 2020 Ultralyte LR and LRB
◦ Kustom Pro-Laser III
◦ Kustom Pro-Lite +
◦ DragonEye

Question 5

Lasing Medium mirrors

Answer 5

Gallium and Arsenide

Question 6

Nano Metric Equivalents

Answer 6

Nano 0.000000001 Billionths

Question 6

Visible Light

Answer 6

400 NM
750 NM

Question 7

Laser Light maybe ____?

Answer 7

◦ Reflected
◦ Refracted
◦ Absorbed

Question 8

Laser Emitting Diode

Answer 8

◦ 1 Nanosecond
 Emits a narrow band of frequencies
◦ 904 Nanometers
 Emits infrared light (limited spectrum)
 DO NOT AIM AT THE SUN

Question 9

Speed Detection Laser

Answer 9

Travels at speed of light
◦ Equates to 0.3 m every 1 billionth of a second
(nanosecond)

Question 10

CHANGE IN DISTANCE

Answer 10

CHANGE IN DISTANCE
SPEED = —————————————–
TIMING BETWEEN PULSES

Question 11

Parts of Laser Pulse

Answer 11

 Pulse Rate
◦ Is the number of pulses emitted in one second
◦ LaserAlly / DragonEye – Depends on ECM profile. 185
pps Normally
◦ LTI – 180 pps
◦ Kustom Pro-Lite+: 200 pps

 Pulse Width
◦ The duration of a pulse is the length of time from the
start of the laser pulse segment of light until the end
of that individual segment.

Question 12

LASER Advantages over Radar

Answer 12

 Target speed calculated from change in position not Doppler shift
 Cannot be fooled by vibrating objects
 Can distinguish between approaching and receding targets
 Updates information instantaneously
 Higher frequency
 Thin collimated beam

Question 13

Tests and Checks

Answer 13

 SELF TEST
 DISPLAY TEST
 SCOPE ALIGNMENT TEST
 FIXED DISTANCE-ZERO VELOCITY TEST

Question 14

Laser Effects

Answer 14

 SWEEP EFFECT
COSINE EFFCT
RADIO FREQUENCY
INTERFERENCE (RFI)

Question 15

Best colour to reflect

Answer 15

Red

Question 16

Legal

Answer 16

 Qualified laser operator
 Manufacturer’s tests conducted and satisfied unit was working properly
 Self check-
Display check -
Scope alignment check-
Zero velocity fixed distance check

 Capable of accurately computing and displaying
the speeds of moving motor vehicles in kph
 Clear line of sight
 Visual estimation of speed verified by laser unit

Question 17

What ensures the accuracy of displayed speeds?

Answer 17

The pulsing data undergoes seven integrity
checks and is applied to the average of least
squares formula with the average speed
displayed.

Question 18

What percentage of the pulsing data is necessary
to obtain a reading?

Answer 18

71

Question 19

PRESS THE SPEED / RANGE BUTTON TO PLACE
UNIT IN RANGE MODE. DO FIXED DISTANCE
TEST AT SAME DISTANCE ABOVE. RESULT
MUST BE WITHIN

Answer 19

N .3m OF ACTUAL DISTANCE

Question 20

IN RANGE MODE CONDUCT SCOPE
ALIGNMENT TEST AT A MINIMUM DISTANCE
OF

Answer 20

30 METERS.

Question 21

Nano means what

Answer 21

Billion

Question 22

Operation of laser during snow, rain

Answer 22

Reduce range and increase Errors but will not affect accuracy.

Question 23

300m Laser width

Answer 23

1 meter

Question 24

Laser right in infrared part is deployed

Answer 24

Gallion

Question 25

Laser full form

Answer 25

 LIGHT  AMPLIFICATION by  STIMULATED  EMISSIONS of  RADIATION

Question 26

Cosign effect on laser degree accuracy

Answer 26

Under 10 degrees

Question 27

Speed estimation not required due to accuracy

Answer 27

False

Question 28

Laser dial swith on and off in

Answer 28

nanosecond

Question 29

Laser travels distance

Answer 29

30000kms per sec.

Question 30

One of 4 mandatory laser test

Answer 30

Display test- 888888 Fixed distance zero velocity test- 0 km/h on an object Distance test- Scope Alignment test- Panning vertically and horizontally.

Question 31

Target area on a vehicle

Answer 31

Between headlights above license plate

Question 32

Laser should not be pointed at

Answer 32

Sun

Question 33

Most important aspect in site selection

Answer 33

Safety