,An enhanced mixed modulated Lagrange explicit time delay estimator with noisy input

• 作 者: Wei XIA Ju-lei ZHU Wen-ying JIANG Ling-feng ZHU
• 机 构: School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu
• 出 处: 信息与电子工程前沿（英文版）
• 发表日期: 2016年10期
• 关键词: Time delay estimation Adaptive fi lter Noisy input Modulated Lagrange Unbiased i

The mixed modulated Lagrange explicit time delay estimation (MMLETDE) algorithm provides an e?cient time delay estimation between narrowband or sinusoidal signals. However, it does not explicitly consider the additive measurement noise at the input, which actually exists in practice. Aiming at this issue, an enhanced MMLETDE algorithm is proposed for noisy inputs based on the unbiased impulse response estimation technique, assuming that the noise power ratio is known a priori. Simulation results show that for narrowband signals or sinusoids over a wide frequency range, the proposed algorithm with a small fi lter order performs well in moderate and high noise scenarios.