The SRIR256V2 from Renesas is a Real-time 4D Imaging Radar System that operates from 76 to 81 GHz. It is based on the SVR4414 high-performance CMOS radar transceiver IC. This system achieves spatial resolutions by cascading four SVR4414 transceivers, each having four independent transmit and four independent receive channels, in a multi-input multi-output (MIMO) configuration. This arrangement of 16 transmit and 16 receiver combinations produces 256 aggregate MIMO channels which are used to sample both horizontal and vertical space ahead. This radar system supports USRR (4 GHz), SRR (2 GHz), MRR (1 GHz), and LRR (250 MHz) range modes. It can combine multiple independent transmit channels in phase to maximize the range in LRR mode to help detect targets beyond 250 m for long-range applications. This radar supports Azimuth and elevation scanning with an accuracy of 0.1° in azimuth and 0.3° in elevation.
The SRIR256V2 uses distributed object tracking algorithms based on advanced tracking algorithms and data association that allow the radar system to track independently moving objects even in crowded environments such as dense traffic. It can compute ego velocity for terrain-rich environments allowing it to track independently moving objects. The radar data from multiple transceivers is sent to an off-the-shelf DSP or GPU which does all the radar signal processing steps including high-density point cloud generation, clustering, tracking, and classification. This radar system uses a high-density point cloud in 4D space to calculate object dimensions and Doppler and is compatible with popular computing platforms like Nvidia GPU. It is available in a package that measures 19.5 x 10.8 x 4.48 cm and is ideal for automotive applications.
