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A Study on Accurate Angle Estimation of Multiple Targets for Digital Beam Forming Automotive Radar

DBF 차량용 레이더를 위한 다중 표적의 정확한 각도 추정 연구

Lee, Seong-Hyeon;Choi, In-Oh;Kim, Kyung-Tae
이성현;최인오;김경태

  • Received : 2015.07.02
  • Accepted : 2015.09.11
  • Published : 2015.09.30

Abstract

In order to satisfy several conditions with respect to size, weight, and costs, automotive radars use an antenna consisting of a small number of receiving channels. If RELAX technique is applied to the automotive radars, angles of targets located in antenna beam can be estimated as well as the number of the targets. However, a small number of receiving channels in the antenna leads to inaccurate spectral estimation in angle domain, which in turn degrades performance of RELAX technique. Therefore, in this study, root-MUSIC technique coupled with MDL criterion is introduced to decide accurate angles of targets in antenna beam. In simulations, we show superior performance of proposed scheme using simulation results when three point targets are located in antenna beam.

Keywords

Angle Estimation;Spectral Estimation;Automotive Radar

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