Published on Apr 29, 2024
In the traffic detection roadside radar market, primary frequency bands include 24 GHz and 77 GHz:
After 2015, significant breakthroughs were made in the technology of 77GHz millimeter-wave radar chips, resulting in a substantial reduction in research and development difficulty and cost. Many roadside millimeter-wave radar manufacturers also began to adopt 77GHz chips. Moreover, vehicle-mounted millimeter-wave radar manufacturers leveraged their product lines to enter the roadside traffic market. As a result, 77GHz millimeter-wave radar and Lidar integrated systems became mainstream in the roadside traffic market.
On December 6, 2021, the Ministry of Industry and Information Technology (MIIT) of China issued a notification on the "Interim Regulations on the Radio Management of Automotive Radars," planning to allocate the 76-79GHz frequency band for automotive radars. The chipsets, antenna designs, software algorithms, etc., for 80GHz are consistent with those for 77GHz, making it relatively easy for manufacturers to switch product lines. Consequently, many roadside millimeter-wave radar manufacturers reused their existing technological routes and began to introduce 80GHz roadside millimeter-wave radars and Lidar integrated systems.
The 76-81GHz frequency band is widely recognized internationally as the common frequency band for automotive radars, with a large concentration of industries including chip manufacturing. Both 77GHz and 80GHz fall within this frequency band, and most chips are generally compatible.
The primary application of 80GHz is in wide-area millimeter-wave radars for roadside use, serving long-distance tracking detection needs for traffic signal control, traffic event detection, vehicle-road coordination, and other traffic scenarios. Such applications require high precision in target tracking and positioning. Currently, most wide-area radars available on the market are based on this frequency band.
On May 23rd, 2023, the Ministry of Industry and Information Technology issued Order No. 62, announcing the new version of the "Radio Frequency Allocation Regulations of the People's Republic of China" (hereinafter referred to as the new "Allocation Regulations"), which will be effective from July 1, 2023.
In the new "Allocation Regulations," a revision was made to specify that the radio location service in the 79-81GHz frequency band will be prioritized for applications such as automotive radar. This frequency band is also where the mainstream roadside radar operates, including the 80GHz band. This revision has sparked widespread discussion and attention in the intelligent transportation industry.
Some perspectives suggest that in the long term, the 92-95GHz frequency band may become the future of roadside radar. From a technological standpoint, the industry generally holds this view optimistically. Firstly, due to its relatively high frequency band, it can offer higher resolution and more precise measurement results. Secondly, there is lower interference since this frequency band is not yet widely utilized, resulting in relatively less interference in this band.
TraffiClair's Product Offering
TraffiClair provides a diverse range of traffic control radar products, including 24 GHz, 77 GHz, and 80 GHz frequencies. Additionally, we are excited to announce that our radar products supporting 94 GHz will be launched in the market soon.
Explore TraffiClair's complete radar product lineup at: ClairWav Microwave Radar Detectors (trafficlair.com)
