| The following are the test data of 5G, V2X antenna, and high-precision GNSS antenna: |
| OBU Antenna Test Report |
Testing
tools: | V2X performance test software, a laptop, two cars, and two sets of OBU devices (4 units). |
Test
Standard: | Under line-of-sight conditions, V2I communication distance ≥ 800m, V2V communication distance ≥ 300m, communication delay ≤ 20ms, packet loss rate ≤ 1% |
Test
Method: | • The test equipment modules are all configured in periodic transmission mode, with a data packet transmission frequency of 10Hz and a test packet number of 5000
packets. • V2V test, deploy two OBU test environments, test the packet loss rate and delay in different travel modes and coverage ranges in static and dynamic scenarios, and
record the data in the table below; • For V2I testing, deploy one OBU and one RSU test environment, test the packet loss rate and latency in different coverage areas in static and dynamic scenarios, and
record the data in the table below; |
| Test Type | Test direction | Packet
length(byte) | Stable packet
receiving distance | Maximum packet
receiving distance | Test scenario |
Dynamic
testing | V2V moving away
from each other in
the same direction | 100 | 800m | 1093.2m | 
|
| 1200 | 731.4m | 737.6m |
V2V approaching in the same direction | 100 | 964m | 1030.3m |
| 1200 | 666.1m | 799.1m |
| High-precision positioning antenna test data |
Testing
Location | Software Park | Test weather: | partly
cloudy |
| Testing
Location | G6 Expressway | Test weather: | light rain |
| Antenna | Positioning
status | Latitude and
longitude
error | Installation
distance | Accuracy
error | Antenna | Positioning status | Latitude and
longitude error | Installation distance | Accuracy
error |
| VLG | Fixed solution: 94.4% Floating point
solution: 5% Differential
solution: 0.6% | East-West Direction:
0.3329m North-South Direction:0.299m | 0.53m | 0.0825m | VLG | Fixed solution:
98% Floating point
solution: 0.8% Differential solution:
1.1% | East-West
Direction: 0.2767m
North-South
Direction: 0.667m | 0.66m | 0.0621m |
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