Radar
X-band frequency:
10.525 Ghz
K-band frequency:
24.150 Ghz
The range of a radar device may be affected by:
A. Interference В. Operator C. Antenna position D. All of the above
The Doppler Principle can be applied
A. Sound waves В. Light waves C. Radio waves D. All of the above
When the radar switches from one target to another target traveling at a different speed.
A. There is no difference in the pitch of the audio returm В. There is a difference in the pitch of the audio returm C. The readout will change to the new target speed, providing its return signal is the necessary predominant signal, D. Both B and C
How frequently are you required to check the radar's internal and external calibration?
Beginning and end of each shift
Identify the three major components of a traffic radar device:
Counting unit, antenna, power source
According to case law, in order to "pass" the external calibration check, that radar must measure the tuning forks speed.
D. Within one MPH
Moving radar determines target vehicle speed by:
Displaying the difference between the high and low Doppler data
Traffic radar utilizes which of the following:
Doppler principle
Radar effects are those things of nature that may cause erroneous speed indications on the radar device's readout.
Electrical, mechanical or operational
A radar operator should test his radar before and after each speed violation.
FALSE
It is ok to use a tuning fork from an X-band radar on a K-band radar.
FALSE
On the audio confirmation, pitch indicates speed.
FALSE
Radar will always display the vehicle closest to the radar.
FALSE
The court case, State v. Tomanelli established judicial notice of the Domet Principle:
FALSE
The word "RADAR" stands for Radio Doppler and Ranging
FALSE
Visual estimate of a violator's speed is an optional element of the tracking history.
FALSE
Which one of the following terms does not mean the same as the other three?
Gigas
When testing a radar device using a tuning fork, it is good practice to:
Hold the tuning fork about one to two inches from the antenna face.
Which court case took judicial notice of the required qualification of the radar operator?
Honeycutt vs. Commonwealth
If several vehicles are all in range, the radar unit will always pick out the speed of the vehicle that is:
Largest Closest Fastest None of the above are always true
Testimony in traffic radar court cases would likely involve questions relating to all except which of the following:
Officers knowledge of radar beam width and range
Which two factors are only found in moving radar?
Panning effect and Batching effect
Which of the following will not affect the range of the radar?
RF interference High voltage lines Range control All will affect range
Traffic radar currently utilizes.
Radio waves
Adverse weather conditions such as rain or snow tend to radar range.
Reduce
To be a qualified radar operator, you are required by the courts to have enough knowledge and training to the radar device
Set up,test and operate
Which factor is not found in stationary radar?
Shadowing effect
Return target signal strength depends on:
Size of vehicle Shape of vehicle Composite of vehicle (metal, glass, fiberglass) Proximity to beam source All of the above
The of a target vehicle is the factor usually considered to be the least dominant in determining which vehicle's speed the radar might display.
Speed
The frequency emitted from the radar device travels at what speed?
Speed of light
A RADAR signal's beam length is infinite unless reflected, refracted, or absorbed
TRUE
Obtaining a tracking history is mandatory in every radar enforcement action.
TRUE
The speed of a Radar signal is always equal to the speed of light.
TRUE
Whenever a radio signal's frequency changes, its wavelength also changes
TRUE
Side lobes refer
That portion of the uncontrolled signal not in the direct line of the aimed antenna
The court case, State v. Dantonio established judicial notice of what?
The Doppler principle
The courts cannot accept every radar instrument as being accurate at all times; but they can take judicial notice of:
The accuracy of every radar instrument that uses the Doppler principle
The Doppler frequency is:
The difference of the transmitted and return frequency
If a radar beam is reflected off an object and does not experience any Doppler shift, then:
The object must not be getting any closer to or any farther from the radar
The radar unit will display the speed of:
The target returning the greatest amount of energy
The three steps a radar operator should follow for proper tracking history in stationary mode are.
Visual estimation, Audio confirmation, and Radar speed verification.
The fundamental relationship of radar is:
Wavelength multiplied by frequency equals speed of light
