Design of a linear non-uniform antenna array for a 77-GHz MIMO FMCW radar

C. Schmid, R. Feger, C. Wagner, A. Stelzer
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引用次数: 27

Abstract

In this paper the design and the implementation of a linear, non-uniform antenna array for a 77-GHz MIMO FMCW system that allows for the estimation of both the distance and the angular position of a target are presented. The goal is to achieve a good trade-off between the main beam width and the side lobe level. The non-uniform spacing in addition with the MIMO principle offers a superior performance compared to a classical uniform half-wavelength antenna array with an equal number of elements. However the design becomes more complicated and can not be tackled using analytical methods. Starting with elementary array factor considerations the design is approached using brute force, stepwise brute force, and particle swarm optimization. The particle swarm optimized array was also implemented. Simulation results and measurements are presented and discussed.
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77 ghz MIMO FMCW雷达线性非均匀天线阵列设计
本文介绍了一种用于77 ghz MIMO FMCW系统的线性非均匀天线阵列的设计和实现,该阵列可以同时估计目标的距离和角位置。目标是在主波束宽度和旁瓣电平之间实现良好的权衡。非均匀间距加上MIMO原理,与具有相同数量元素的经典均匀半波长天线阵列相比,提供了优越的性能。然而,设计变得更加复杂,不能用分析方法来解决。从基本的阵列因素考虑出发,采用蛮力、逐步蛮力和粒子群优化方法进行设计。实现了粒子群优化阵列。给出了仿真结果和测量结果,并进行了讨论。
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