Fujitsu Ten developing compact 3D electronic scan mm-wave radar for automotive applications; delivery in 2014
|2D vs. 3D scanning. Click to enlarge.|
Fujitsu Ten Ltd. has developed a compact 77 GHz three-dimensional electronic scan millimeter-wave radar for automotive applications that is capable of detecting an object in three dimensions, including the elevation range in addition to distance and azimuth range. While making further improvements, the company intends to deliver this product to automobile manufacturers from 2014.
This developed product is for frontward detection usage. By sensing the three dimensions—elevation, distance and azimuth—the product can the product can identify obstacles on the road more reliably from further away. The company will describe the new radar unit in a paper at the 19th ITS World Congress.
|The new 77GHz 3D electronic scan millimeter wave radar unit. Click to enlarge.|
Using advanced signal processing technology jointly-developed with Fujitsu Laboratories Ltd. and an innovative design of the antenna for transmitting and receiving radio waves, the Fujitsu Ten 3D unit is the size of its latest 2D electronic scan millimeter-wave radar, and fits in the palm of a hand. The product can be mounted in a wide range of automobiles from large-sized automobiles to small-sized automobiles.
The axis adjustment used to be conducted when mounting the millimeter-wave radar in the automobile factory can be simplified, which contributes to the productivity improvement.
|The 2D unit introduced in 2010. Click to enlarge.|
In recent years, automobile pre-crash safety features designed to reduce the damage at the time of automobile collision have been moving to full-scale implementation. Millimeter-wave radar is one of the key devices that can detect objects in front of the automobile.
Millimeter wave radar measures distance, angle, and relative speed from the automobile by transmitting and receiving radio waves. It is increasingly used as automobile-mounted radar that foresees the collision and reduces the collision damages by interlocking with alarm and braking system. It is less likely affected by bad weathers such as rain, fog, and snow, dust or dirt.
In 1997, Fujitsu Ten developed the first practical application of 60 GHz millimeter-wave radar for dump trucks. Since 2003, a wide variety of frontward, rearward, and front-sideward 77 GHz millimeter-wave radars have been developed for passenger cars.
In 2010, Fujitsu Ten developed the Vehicle-Mounted 76-GHz Millimeter Wave Radar, a more compact unit about half the size of those that came before it. Recently, the technology has gone beyond collision protection, leading to the establishment of ACC (Adaptable Cruise Control) technology that maintains a set distance from the car in front and CMS (Collision Mitigation System) technology that warns when anticipating possible collision and automatically controls braking.