Adaptive Chirp Beamforming for Direction-of-Arrival Estimation of Wideband Chirp Signals in Sensor Arrays

Jeong-Soo KIM; Byung-Woong CHOI; Eun-Hyon BAE; Kyun-Kyung LEE

doi:10.1093/ietcom/e91-b.8.2757

Regular Section

Adaptive Chirp Beamforming for Direction-of-Arrival Estimation of Wideband Chirp Signals in Sensor Arrays

Jeong-Soo KIM, Byung-Woong CHOI, Eun-Hyon BAE, Kyun-Kyung LEE

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Keywords: chirp signal, adaptive beamforming, DOA estimation, uniform linear array

JOURNAL RESTRICTED ACCESS

2008 Volume E91.B Issue 8 Pages 2757-2760

DOI https://doi.org/10.1093/ietcom/e91-b.8.2757

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Abstract

An adaptive chirp beamforming method is proposed to solve the bias problem in the direction-of-arrival (DOA) estimation of wideband chirp signals that have identical time-frequency parameters yet emanate from different directions. The proposed method, based on the steered minimum variance (STMV) method, exploits the time-frequency structure of a chirp signal to improve the DOA estimation performance by effectively suppressing the wideband chirp interferences causing the bias. Simulations are performed to demonstrate the effectiveness of the proposed method.

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