Directions of arrival estimation for multi frequency-hopping signals based on digital channelized receiver and spatial time-frequency analysis

CHEN Li-hu; ZHANG Er-yang

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Directions of arrival estimation for multi frequency-hopping signals based on digital channelized receiver and spatial time-frequency analysis

更新时间：2024-10-14

- Directions of arrival estimation for multi frequency-hopping signals based on digital channelized receiver and spatial time-frequency analysis
- Vol. 30, Issue 10, Pages: 68-74(2009)
- 作者机构：
  
  国防科学技术大学电子科学与工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.23
- Published：2009
- 稿件说明：
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CHEN Li-hu, ZHANG Er-yang. Directions of arrival estimation for multi frequency-hopping signals based on digital channelized receiver and spatial time-frequency analysis[J]. 2009, 30(10): 68-74.
DOI：

CHEN Li-hu, ZHANG Er-yang. Directions of arrival estimation for multi frequency-hopping signals based on digital channelized receiver and spatial time-frequency analysis[J]. 2009, 30(10): 68-74. DOI：

摘要

提出了一种基于数字信道化和空时频分析的多跳频信号DOA(direction of arrival)估计方法

该方法能够在欠定条件下(传感器数目小于信号数目)实现多个信号的精确测向。首先利用多相滤波器组实现数字信道化接收机的设计

然后对各子信道的数据进行时频分析

得到全景时频图;再在时频域提取跳频信号的有效hop

针对每个hop建立一个空时频矩阵;最后运用空时频方法估计每hop的DOA。仿真结果验证了方法的有效性。

Abstract

An algorithm of DOA estimation for multi frequency-hopping signals based on digital channelized receiver and spatial time-frequency analysis was proposed

which can realize exact DOA estimation in underdetermined condition. First

the architecture of digital channelized receiver based on polyphase filter banks was realized. Second

a clear time-frequency representation was gained by time-frequency analysis. Third

effective hops were selected from the time-frequency distribution

and every hop’s spatial time-frequency matrix was built. At last every hop’s DOA was estimated based on spatial time-frequency method. The simulation results demonstrate that the estimation algorithm is effective and efficient.

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