Summary
International Symposium on Antennas and Propagation
2012
Session Number:POS2
Session:
Number:POS2-29
A Consideration of Performance Improvement of Location Estimation of Scatterers in MIMO Radar
Tatsuya Hayashi, Nobuyoshi Kikuma, Hiroshi Hirayama, Kunio Sakakibara,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
In recent years, the frequency resource has been increasingly restricted by development of the mobile communications which have the multifunctional portable cellular phones etc. as typical products. In that background, the technology which uses multiple antennas for both transmitting and receiving, called MIMO (Multiple-Input Multiple-Output), is proposed and widely used in the systems such as the wireless LAN. Similarly, in the radars, the MIMO technology is used and it is called MIMO radar. It is also uses multiple antennas to transmit and receive the signals, and thus provides high-resolution spatial spectrum estimates. In this paper, we perform a location estimation of scatterers using the MIMO radar. Specifically, we introduce into the MIMO radar the MUSIC algorithm which is the representative of nulling methods. In addition, we compare the performances between the MUSIC-based method and the conventional beamforming methods in the location estimation of scatterers, and clarify the performance difference between them. As a result of computer simulation, it is shown that the MUSIC algorithm reveals very high accuracy in the estimation of DOA, amplitudes and ranges of targets.