加权
计算机科学
计算复杂性理论
算法
数学优化
同质性(统计学)
职位(财务)
多项式的
数学
机器学习
财务
医学
放射科
数学分析
经济
作者
Xinlei Shi,Xiaofei Zhang,Yuxin Sun,Yang Qian
出处
期刊:IEEE Signal Processing Letters
[Institute of Electrical and Electronics Engineers]
日期:2023-01-01
卷期号:: 1-5
标识
DOI:10.1109/lsp.2023.3340996
摘要
Direct position determination (DPD) approaches of non-circular (NC) signals for distributed antenna arrays are outstanding in location accuracy and available degrees of freedom. Nevertheless, the existing grid-based DPD approaches involve unnecessary computational costs because of NC phases. Besides, the cost function utilized in DPD could cause performance deterioration as ignoring the non-homogeneity error of the received data. To this end, we propose a DPD approach implemented by polynomial rooting and optimal weighting. Aiming to reduce computational costs, we first construct a computationally efficient cost function. Meanwhile, to mitigate the adverse impact induced by non-homogeneity errors in an effective manner, we assign an optimal weight to each antenna array. Simulation results demonstrate that the proposed approach achieves a good compromise between performance and computational complexity.
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