Radar accuracy improvement by pattern multiplication for automotive radar systems and other sensing scenarios
Radar accuracy improvement by pattern multiplication for automotive radar systems and other sensing scenarios
复制标题
通过汽车雷达系统和其他传感场景的模式乘法提高雷达精度
DOI：
10.1049/icp.2022.2321
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Alistarh C
中科院分区：
文献类型：
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作者：
Alistarh C
汽车雷达市场正在增长，现在汽车上有几个传感器系统，具有计算能力和系统架构的复杂性。随着雷达的不断研究和改进，不断发展的架构往往需要先进的处理技术。在本文中，对选定的毫米波系统架构下的汽车雷达的角度雷达目标估计进行了乘法和研究。虽然以前的雷达系统保留了每个微芯片或雷达模块一个功能的模板，但通过跨多个芯片采用多样化的信号处理技术可以实现性能的提高。此外，在考虑天线波束转向的情况下，引入目标角响应的乘法，可以提高分辨率和雷达探测精度。基本上，乘法技术可以在雷达目标检测期间提供旁瓣电平的降低，这可以通过在时域中收集多个数据样本同时处理它们来实现，从而实现更好的雷达响应。在本文中，该技术在数学上进行了概述，然后考虑了两种不同的雷达系统架构：多输入多输出（MIMO）雷达和使用巴特勒矩阵发射阵列的扫描雷达，其旁瓣电平明显提高了13 dB，提高了雷达分辨率。
The automotive radar market is growing, and several sensor systems are now present on a car, with computing power and increased complexity for the system architecture. While radar is continually researched and improved, evolving architectures often require advanced processing techniques. In this paper, angular radar target estimates are multiplied and investigated in the context of automotive radar for selected millimeter-wave system architectures. While previous radar systems preserved the template of one function per one microchip or radar module, improved performance can be achieved with a diversification of the adopted signal processing techniques across multiple chips. Also, by introducing multiplication of the angular target response whilst considering antenna beam steering, resolution and radar detection accuracy can be improved. Basically, the multiplication technique can offer reductions in the side-lobe level during radar target detection, made possible by collecting several data samples in the time-domain whilst processing them together and this achieves a better radar response. In this paper, this technique is mathematically outlined and then considered for two distinct radar system architectures: a multiple input-multiple output (MIMO) radar and a scanning radar using a Butler matrix transmit array, with a noticeable side-lobe level improvement of 13 dB improved radar resolution.