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General Introduction  

ITARD-024SA is high-performance narrow-beam flat radar. It is an auxiliary product in the ITS 

area of considerable integration and intelligent level. It is to detect the moving vehicle 

dynamically to promote the modern management level of the road and city traffic.  

 

ITARD-024SA realizes the vehicle detect via the Doppler effect theory. The radar sends out a ray 

of microwave, and the microwave is reflected after it touched the moving vehicle. The radar can 

receive the reflected wave. If the object has the radial movement relative to the radar, the 

frequency of the reflected wave is different from the frequency of the send out wave. At the same 

time, the difference of the frequency is proportion to the relative moving speed of the object and 

the radar.  Now the radar can detect the difference between the reflected wave and the send out 

wave to calculate the moving speed of the vehicle.  

 

The radar that used to detect the vehicle speed shall meet some basic requirements.  

 

First, the antenna of the radar shall have sound direction capabilities. The wave beam shall not 

be too wide. Otherwise, there are several lanes in the radar detect area at the same time; the 

radar can not distinguish the object and can not calculate the speed. In the actual environments, 

we can see the wave beam level width of the radar shall be less than 7°. The ITARD-024SA 

adopts the 4.6°angle. To avoid the interference from the vehicle out of the beam, the side lobe 

level of the antenna direction shall be general low. Usually it shall be less than 

15dB. The 

ITARD-024SA adopts 

21.5 dB. At this value, it can effectively reduce the interference from the 

neighboring lane. Besides, to accurately locate the vehicle position, the trailing edge of the radar 

beam shall be steep, the typical and the wave beam-shape factor (

20dB width/

3dB width) 

shall be less than 2.5.  

 

The second requirement is speed measuring responsive time. It is the delay time from the object 

enters the detect area to the radar gives the speed data. ITARD-024SA adopts the following 

principles: for the vehicle of slow speed, the speed measuring responsive time is general long 

and for the vehicle of high speed, the speed measuring responsive time is short. In this way, the 

vehicles of all speeds are in the specified distance so that the camera can get the clear plate 

information.  

 

 

Содержание ITARD-024SA

Страница 1: ...ITARD 024SA Radar User s Manual Version 1 0 0...

Страница 2: ...i Table of Contents 1 General Introduction 1 2 Features 2 3 Specifications 3 4 Dimensions 4 5 Installation 5 6 FAQ 8 Appendix Toxic or Hazardous Materials or Elements 9 FCC Warning 10...

Страница 3: ...g our device This user s manual is designed to be a reference tool for your system Please read the following safeguard and warnings carefully before you use this series product Please keep this user s...

Страница 4: ...er to the radar before completing installation Always follow the instruction guide the manufacturer recommended 4 Qualified engineers needed All the examination and repair work should be done by the q...

Страница 5: ...The wave beam shall not be too wide Otherwise there are several lanes in the radar detect area at the same time the radar can not distinguish the object and can not calculate the speed In the actual e...

Страница 6: ...radar is small In this way it avoids the interference of reflected wave from the neighboring lane Fast responsive time guarantees the capture rate and real time feature Advanced radar signal process a...

Страница 7: ...mmunication Interface StandardRS 232 Cable Definition Red DC12V or AC24V1 Black DC12V or AC24V2 White Tigger Out Yellow RS232 RXD Green RS232 TXD Orange RS232 GND Power Input DC 12V AC 24V Current 500...

Страница 8: ...4 4 Dimensions Please refer to the following figure for detailed information The unit is mm See Figure 4 1 Figure 4 1...

Страница 9: ...usually the distance from the centre of the radar monitor area to the projection ground distance of the radar ranges from 10m to 20m Step3 Radar Installation Angle For the environment of high traffic...

Страница 10: ...e line It has requirements of the radar beam level angle When the projection distance is far the width of the level 3dB shall be smaller When the projection distance is near the width of the level 3dB...

Страница 11: ...7 Brown GND GND Step5 Connect the power cable and boot up the device you can see the indication light is on See Figure 5 4 Figure 5 4 Radar power indication light...

Страница 12: ...angle Make sure it is facing the corresponding lane The radar installation angle is within the reasonable range Check the distance from the radar to the object is in the specified range The radar sen...

Страница 13: ...icates that the concentration of the hazardous substance of at least one of all homogeneous materials in the parts is above the relevant threshold of the SJ T11363 2006 standard Note This manual is fo...

Страница 14: ...t 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequenc...

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