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10. Cosine Effect
The term "Cosine Effect" as typically used in law enforcement speed
measurement refers to the reduction of a vehicle's measured speed
using Radar or Laser systems as compared to the actual vehicle
speed, when targeting the vehicle at an angle . The diagram below
shows the line "V" as the vehicle's travel direction and the LIDAR
operator's line of sight "O" to the target Vehicle . The angle between
these two lines is labeled theta "Θ" . Motion of the vehicle along "Line
V" is projected onto the LIDAR operator's line of sight "Line O" . Using
standard trigonometry, this projected motion can be show to be:
ΔΟ = ΔV x COSΘ
Figure 10
Cosine Illustration
Summary of Contents for DragonEye Compact
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