Main application categories of millimeter wave radar

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Main application categories of millimeter wave radar [Copy link]

Millimeter wave radar, as the name implies, is a radar that works in the millimeter wave band (30-300 GHz). Currently, millimeter wave applications mainly include the following categories:

1). Guidance radar and fire control radar. The main reason for some of these radars to choose the millimeter wave band is to improve detection capabilities, reduce radar size, reduce weight and volume, and facilitate integration. 2). Target detection radar. This type of radar mainly detects the distance, speed and angle of the target in the observation area through mechanical/electronic beam scanning. It is equipped with corresponding data processing units to realize target recognition (scattering characteristics), tracking and prediction (Kalman filtering, particle filtering, etc.). 3). Millimeter-wave earth observation radar. This type of radar is mainly millimeter-wave synthetic aperture radar (SAR). This type of radar mainly realizes ground imaging observation and obtains SAR images of the ground area.

The commonly reported millimeter wave SAR system will not be described here. For details, please Google: mmWave SAR System

4). Millimeter-wave short-range detection radar, this type of radar mainly realizes two-dimensional or three-dimensional imaging detection of targets within 2 meters. Currently, this type of system has bands in 30~37.5 GHz, 94~200 GHz or THz bands. For example, the current human body security 3D scanning radar at US airports uses millimeter waves instead of X-rays to detect and image targets inside human clothes and outside the skin to enhance security; and non-destructive 3D detection of some special materials is achieved through 35GHz band radar or 94GHz and THz band radar.

5). Automotive radar, radar sensors are installed on cars to achieve car collision avoidance, automatic parking, pedestrian detection, etc. The current mainstream automotive radar is 24GHz radar, but it is limited by frequency band control, radio astronomy 5Km does not allow the use of radar in this band, and its own large size (mainly large antenna size). Currently, 77GHz automotive radar is gradually being commercialized and equipped on some high-end cars. The main advantages of 77GHz automotive radar are wider allocated frequency band, higher distance resolution, smaller size than 24GHz radar, and strong target detection capability, but the production and processing technology requirements of 77GHz radar are higher. However, at present, this problem is no longer an industry barrier.

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月下良缘

Thanks for sharing!