Meet the growing computational demands of next-generation 4D imaging radar systems.
4D imaging radar enhances automotive sensing by adding elevation to traditional range, velocity, and azimuth measurements. This enables better target detection and classification, enabling safer driving decisions. Multiple input multiple output (MIMO) antenna technology has expanded the role of radar sensing from tracking moving targets to high-resolution imaging of the surroundings. High-resolution 4D imaging MIMO radars with more virtual antennas generate a much larger radar data cube than traditional radars. Processing this data demands computationally intensive fast Fourier transforms (FFTs) across the range, Doppler, azimuth, and elevation dimensions.
The Cadence Vision 341 is a high-performance digital signal processor (DSP) optimized for vision, artificial intelligence (AI), and radar applications. The Cadence Vision 4DR Accelerator is a specialized hardware engine designed to handle complex FFT operations efficiently. It offers high flexibility with programmable support for various FFT lengths, modes, precision, scaling options, and windowing features.
This whitepaper describes two modes of 4D imaging radar signal processing:
Vision 341 + Vision 4DR Mode: All FFT modules are efficiently offloaded on Vision 4DR, and the rest of the signal processing chain is performed on Vision 341.Vision 341 Only Mode: The entire signal processing chain, including FFT modules, is implemented on Vision 341.Offloading FFT computation enables Vision 341 to perform other tasks in parallel, improving system efficiency. In Vision 341 + Vision 4DR mode, Vision 4DR accelerates FFT tasks up to 3.7X faster than Vision 341.
Read more here.
Fig.1: Vision 341 and Vision 4DR Subsystem Configuration. Source: Cadence
 |
 |
 |
 |
 |  |
 |  |
 |  |
Leave a Reply