WHST STA79-6-A User manual

WHST│Product Introduction│- 1 -
STA79-6-A Door opening obstacle
avoidance radar
PRODUCT MANUAL
WHST CO., LTD.
Factory 1, Wanchun High-tech Innovation Park, East Dist of Economic & Technological Development Zone,
241000 Wuhu, Anhui, China
2023.04

WHST│Product Introduction│- 2 -
Directory
1. Product Introduction ........................................................................- 4 -
2. Product description ..........................................................................- 5 -
2.1 Technical index ........................................................................- 5 -
3. Interface description ........................................................................- 7 -
4. Radar installation method and size..................................................- 8 -

WHST│Product Introduction│- 3 -
Revision record
Date
Version
Description
Author
2023-4-26 V1.0 Initial version Yu Xuze

WHST│Product Introduction│- 4 -
1. Product Introduction
STA79-6 Door Open Obstacle Avoidance Radar is an automotive
radar product with ultra-high precision based on 79GHz millimeter wave
technology independently developed by WHST Co., Ltd. The operating
frequency of the radar is 77GHz-81GHz, and the frequency sweep
bandwidth is as high as 4GHz. In addition to accurately detecting the
horizontal distance and vertical distance and speed information of the
target, it can also detect the height of the target to realize the real
four-dimensional information detection of the target.
The STA79-6 door-opening obstacle avoidance radar is installed on
the lower edge of the door to achieve high-precision detection of
obstacles in the range of 150° in the horizontal and 150° in the pitch. The
detection accuracy is as high as 5cm, which is suitable for vehicle door
opening and obstacle avoidance and automatic door control. It can also
cooperate with the automatic parking system to accurately perceive the
surrounding environment.
Figure 1 STA79-6-A Radar product physical map

WHST│Product Introduction│- 5 -
2. Product description
2.1 Technical index
See Table 1 for the technical indicators of STA79-6-A type vehicle
radar products.
Table 1. STA79-6-A radar product technical indicators
Product Features Door opening obstacle avoidance radar
Frequency Range 77GHz~81GHz
Modulation waveform FMCW
Effective bandwidth 4GHz
Data rate 20Hz
Detection Range 0.15m～4m
Velocity Range
-13.7m/s～+13.7m/s
Dimensions 107.5mm*32mm*13.6mm
Weight ≤80g
Operating Voltage 9~16V DC
Working Temperature -40℃~+85℃
Azimuth Angle Range -75°～+75°
Elevation Angle Range -75°～+75°
Ranging accuracy ±0.05m
Speed accuracy ±0.235m/s
Angle accuracy ±0.5°@0°
Working current(typical value) ≤200mA@12V
Power consumption ≤2.5W
Protection level IP6K7
Communication port CAN

WHST│Product Introduction│- 6 -
Installation height 0.2m~0.5m
RF output power 33.67 dBm
Antenna gain 6 dBi

WHST│Product Introduction│- 7 -
3. Interface description
Radar equipment terminal connector and wiring harness terminal
connector are shown in Figure 2, and the wiring definition is shown in
Table 2
Device side
Figure 2 Schematic diagram of wiring
Table 2 Definition of external plug-in pins
NO Pin definition Signal function Note
1 VPOWER Power input
2 GND Ground
3 DCANH Public CANH
4 DCANH Public CANL

WHST│Product Introduction│- 8 -
4. Radar installation method and size
As shown in the radar size diagram in Figure 7, the product size is 106×97.8×27.3mm, and
it is directly installed on the car body using reserved three-leg holes to ensure the installation
strength. It is recommended to use 3 M5*16 combination screws to fix the radar to the car body
mounting hole.
Figure 7 Radar size diagram

WHST│Product Introduction│- 9 -
FCC Warning
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1)This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 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 frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help.
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment.
This transmitter must not be co‐located or operating in conjunction with any other
antenna or transmitter.
This equipment should be installed and operated with minimum distance 20cm between
the radiator& your body.