Millimeter-wave radar, which operates in the millimeter-wave frequency domain (30-300 GHz, with wavelengths between 1-10 mm), is a type of radar used for both range and azimuth detection. It was initially developed for military applications and saw rapid development after World War II. Millimeter-wave radar combines some advantages of both microwave and optical radar systems.
Compared to ultrasonic radar, millimeter-wave radar offers advantages such as smaller size, lighter weight, and higher spatial resolution. In comparison to optical sensors like infrared, lasers, and cameras, millimeter-wave radar excels in its ability to penetrate fog, smoke, dust, and operates effectively in all weather conditions, making it an all-weather, all-day solution. Additionally, millimeter-wave radar exhibits superior anti-jamming and anti-stealth capabilities compared to other microwave guidance systems. Therefore, millimeter-wave radar finds wide-ranging applications in various fields, including automotive, drones, 5G communication, satellite remote sensing, intelligent transportation, and more.
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The application fields of millimeter-wave radar:
Currently, the available frequency bands for millimeter-wave radar are 24GHz, 60GHz, 77GHz, and 79GHz, with 24GHz and 77GHz being the mainstream frequency bands.
24GHz millimeter-wave radar was the first to be used for civilian purposes. It has matured in terms of performance and is relatively low-cost. In contrast, 77GHz started later and still has significant room for improvement in cost control and performance. In the automotive sector, 77GHz is gradually replacing 24GHz due to its superior performance. In fact, many countries and regions have already allocated this frequency band as a dedicated band for automobiles. However, in other fields such as smart transportation, smart homes, security, smart appliances, and intelligent bathrooms, 24GHz will continue to be highly sought after, bringing unprecedented convenience to people's lives.
Performance of 24GHz millimeter-wave radar in non-automotive fields:
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