基于局部线性模型树的多波束比幅测向算法研究

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中图分类号： TN971+.5 文献标志码：A

Abstract： Aiming at the issues of low accuracy in linear approximation algorithms and susceptibility to antenna beam pattern distortion during amplitude-comparion direction-finding calculations，the non-linear relationship between the direction of arrival （DOA）and beam amplitude ratio is analyzed. A neuro-fuzzy model based on the Local Linear Model Tree （LOLIMOT） is adopted to achieve highprecision fiting of this nonlinear relationship. Simulation test results demonstrate that the proposed model effectively adapts to the antenna beam charateristics in wide-frequency-band multi-beam amplitude-comparion direction-finding systems，overcomes the limitations of traditional amplitude directionfinding algorithms，and exhibits high direction-finding accuracy and strong noise adaptability.

Key words：multi-beam amplitude comparison;direction-finding;LOLIMOT

0 引言

多波束比幅测向是采用多个不同波束指向的天线，覆盖一定的空间，根据各天线侦收同一信号的相对幅度大小确定来波方向，属于振幅法测向1的一种。（剩余5353字）