电波科学学报2024，Vol.39Issue(2)：296-304,9.DOI:10.12265/j.cjors.2023079
基于时间调制多波束阵列的单通道全向测向方法
A full-angle direction finding method with a single channel based on time modulated multi-beam array
摘要
Abstract
The direction finding(DF)method based on multi-beam array has the advantage of high accuracy.However,each beam needs an independent radio frequency(RF)channel,which leads to the complexity and high cost of the DF system.The inconsistencies of amplitude and phase between channels will also increase the DF error.A full-angle DF method with a single RF channel based on time modulated multi-beam array is proposed in this paper.The multi-beam array DF system is simplified into a single RF channel system by time modulation.The harmonic characteristic is utilized to calculate the received signal amplitude of each beam to obtain the direction of the arrived signal with high precision,and the complexity and cost of the system are reduced.The simulated results show that the proposed method achieves less error than the multi-channel DF method based on the multi-beam array under same conditions.The measured results show that the DF error of the proposed method is less than 1.3° operating from 4 to 5 GHz,which is smaller than that of the existing multi-beam arrays.关键词
时间调制/多波束阵列/龙伯透镜/单通道/测向Key words
time modulation/multi-beam array/Luneburg lens/single-channel/direction finding分类
信息技术与安全科学引用本文复制引用
王明骞,贺冲,相东,曹岸杰,杨勇,游月辉,金荣洪..基于时间调制多波束阵列的单通道全向测向方法[J].电波科学学报,2024,39(2):296-304,9.基金项目
国家自然科学基金(62271317) （62271317）
