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基于智能天线的三维直扩序列快速捕获算法
引用本文:胡修林,王甲池,张蕴玉,罗泽宙.基于智能天线的三维直扩序列快速捕获算法[J].华中科技大学学报(自然科学版),2007,35(2):86-89.
作者姓名:胡修林  王甲池  张蕴玉  罗泽宙
作者单位:华中科技大学,电子与信息工程系,湖北,武汉,430074
摘    要:提出了一种基于智能天线的三维捕获算法,利用智能天线的波束成形技术,将空间域等分为几个搜索区域,再对每个空间搜索区域进行频域-时域的二维搜索.给出了该算法的检测概率、虚警概率和平均捕获时间等公式.计算机模拟结果显示,对周期为255的伪随机码而言,8分区新算法在正常工作条件下相对同等复杂程度的匹配滤波算法至少减小平均捕获时间90 %.

关 键 词:直接序列扩频  三维捕获  天线阵  智能  天线  三维  直扩序列  快速  捕获算法  technique  multiple  antennas  PN  sequence  滤波算法  匹配  程度  正常工作条件  伪随机码  周期  显示  模拟结果  计算机  公式  平均捕获时间
文章编号:1671-4512(2007)02-0086-04
收稿时间:2006-02-27
修稿时间:2006年2月27日

Three dimensional acquisition for PN sequence by multiple antennas technique
Hu Xiulin,Wang Jiachi,Zhang Yunyu,Luo Zezhou.Three dimensional acquisition for PN sequence by multiple antennas technique[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2007,35(2):86-89.
Authors:Hu Xiulin  Wang Jiachi  Zhang Yunyu  Luo Zezhou
Abstract:A three-dimensional acquisition algorithm based on antenna arrays is proposed,in which the beamforming technique is used to divide the spatial domain into several nonoverlapping and evenly cells.Two dimensional delay and frequency domain was searched in each spatial cell.The correct detection probability,false alarming probability and mean acquisition time of the proposed method was derived.Numerical results show that the proposed method can achieve the acquisition at least ten times faster than that of conventional matchfilter method for PN sequences with period 255 in the carrier-to-noise(C/N) ratio in normal working condition.
Keywords:direct-sequence spread-spectrum  three-dimensional acquisition  antenna arrays
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