分数傅里叶域宽带信道化侦察接收算法研究

doi:10.3969/j.issn.1000-1093.2015.06.011

兵工学报 ›› 2015, Vol. 36 ›› Issue (6): 1040-1045.doi: 10.3969/j.issn.1000-1093.2015.06.011

分数傅里叶域宽带信道化侦察接收算法研究

邓兵，栾俊宝

（海军航空工程学院电子信息工程系，山东烟台 264001）

收稿日期:2014-03-03 修回日期:2014-03-03 上线日期:2015-08-03
通讯作者: 邓兵 E-mail:navy_dbing@tom.com
作者简介:邓兵（1975—），男，副教授
基金资助:
国家自然科学基金项目（60902054、61032001）；中国博士后科学基金项目(201003758、20090460114)

Study of Reconnaissance Reception Algorithm of Wide-band Channelization in the Fractional Fourier Domain

DENG Bing, LUAN Jun-bao

(Department of Electronic and Information Engineering, Naval Aeronautical and Astronautical University,Yantai 264001, Shandong, China)

Received:2014-03-03 Revised:2014-03-03 Online:2015-08-03
Contact: DENG Bing E-mail:navy_dbing@tom.com

摘要/Abstract

摘要： 数字信道化接收机是目前侦察接收机的主流。为降低频带折迭式信道化接收机对设备的要求，并有效弥补其输出信道模糊、灵敏度下降和截获概率降低的不足，以离散分数傅里叶变换为数字信号处理工具，提出了一种分数傅里叶谱折迭式数字信道化接收方法。分析了其基本原理及部分参数设置条件，给出了具体方法步骤。通过仿真进行了原理验证。研究结果表明：如果将接收信号划分成K个分波段，采用该方法能有效消除信道模糊问题，输出噪声总功率只有传统频带折迭式信道化的1/K，采样频率、设备量均可降低为纯信道化接收的1/K倍。

关键词: 信息处理技术, 信号检测, 参数估计, 宽带信道化, 分数傅里叶变换

Abstract: Digital channelized receiver is currently the main stream of reconnaissance receivers. In order to reduce the equipment demand of band-folded channelized receiver, and remedy the shortages of output channel fuzzy, decrease in sensitivity, and reduction in interception probability, a receiving method of digital channelization is proposed based on fractional Fourier spectrum enfoldment, using the discrete fractional Fourier transform as the digital signal processing tool. The basic principle about the proposed method and the setting condition of some parameters are analyzed. The detail steps are provided. Finally, the simulation is made to prove the above-mentioned theories. The results show that the proposed method is used to eliminate the channel fuzzy if the recieved signal is divided into K simpling frequencies. The total power of output noise is only 1/K of tranditional band-folded channelized receiver.

Key words: information processing technology, signal detection, parameter estimation, wide-band channelization, fractional Fourier transform

邓兵，栾俊宝. 分数傅里叶域宽带信道化侦察接收算法研究[J]. 兵工学报, 2015, 36(6): 1040-1045.

DENG Bing, LUAN Jun-bao. Study of Reconnaissance Reception Algorithm of Wide-band Channelization in the Fractional Fourier Domain[J]. Acta Armamentarii, 2015, 36(6): 1040-1045.

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分数傅里叶域宽带信道化侦察接收算法研究

Study of Reconnaissance Reception Algorithm of Wide-band Channelization in the Fractional Fourier Domain

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