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Millimeter-wave radar + video fusion perception technology becomes the new standard for smart highway construction.
Release date:
2025-09-10
Millimeter-wave radar and video fusion perception technology are becoming a key support for smart highway construction.
Millimeter-wave radar and video fusion perception technology are becoming a key support for smart highway construction. By combining the high-precision ranging and speed-measuring capabilities of millimeter-wave radar with the intuitive visual information provided by video cameras, this technology overcomes the limitations of traditional single sensors in complex environments. Millimeter-wave radar can operate reliably even in adverse weather conditions such as rain, snow, or dense fog, enabling real-time capture of critical traffic parameters like traffic flow, vehicle speed, and vehicle density. Meanwhile, video fusion leverages a 3D Geographic Information System (3D GIS) engine to seamlessly stitch together multiple surveillance videos and accurately map them onto a detailed 3D实景 model, achieving dynamic "virtual-real integration" for enhanced situational awareness.
In the Qinghai Lake tourism-specific highway project, this technology integrates bidirectional radar devices with video systems, enabling coverage of the 22-kilometer pilot section with sensors deployed at 800-meter intervals. The system has already identified and recorded over 620,000 incidents, including congestion and illegal parking. Meanwhile, the Beijing-Xiong'an Expressway employs a radar-visual fusion solution to establish an "ultra-long-range perception network," accurately detecting vehicles, pedestrians, and even invasive wildlife within an 800-meter range. This advanced setup ensures continuous, synchronized tracking across the entire road network, delivering lane-level monitoring capabilities.
The technological advantages lie in three key areas: First, all-weather stability—thanks to the complementary strengths of millimeter-wave radar's penetrating power and video-based vision, ensuring uninterrupted monitoring around the clock. Second, high-precision positioning: after fusion, the system achieves centimeter-level accuracy, enabling it to detect even tiny objects like dropped debris. Finally, enhanced data value—by leveraging a digital twin platform to dynamically construct real-time 3D road models, the system provides a scientific foundation for maintenance decisions and traffic management strategies.
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