Joint Instantaneous Frequency and 2-D AOA Estimation of Wideband LFM Signals

HUANG Ke-ji; TIAN Da; CHEN Tian-qi

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Joint Instantaneous Frequency and 2-D AOA Estimation of Wideband LFM Signals

更新时间：2025-07-16

- Joint Instantaneous Frequency and 2-D AOA Estimation of Wideband LFM Signals
- Acta Electronica Sinica Vol. 32, Issue 6, Pages: 990-993(2004)
- 作者机构：
  
  电子科技大学电子工程系,四川,成都,610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911
- Published Online：25 June 2004，
  
  Published：2004
- 稿件说明：
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HUANG Ke-ji, TIAN Da, CHEN Tian-qi. Joint Instantaneous Frequency and 2-D AOA Estimation of Wideband LFM Signals[J]. Acta Electronica Sinica, 2004, 32(6): 990-993.
DOI：

HUANG Ke-ji, TIAN Da, CHEN Tian-qi. Joint Instantaneous Frequency and 2-D AOA Estimation of Wideband LFM Signals[J]. Acta Electronica Sinica, 2004, 32(6): 990-993. DOI：

摘要

针对非平稳的宽带线性调频信号(LFM)

本文利用了对称阵元分布(WVD)将原始数据投影到时频波束空间建立了一种新颖的具有分维结构的空间时频分布数据模型

然后采用Beamspace-ESPRIT算法、子空间投影法获得了信号瞬时频率和二维到达角的联合估计.仿真实验证明算法精度较好

计算量小

具有很好的实用性.

Abstract

The Wigner-Ville distributions of symmetrical sensors are used to project the data from element space to time-frequency beamspace

then a novel spatial time-frequency data model with a separable structure is achieved.Based on this model

beamspace-ESPRIT and subspace projection can be used respectively to get the instantaneous frequency and 2-D AOA of impinging signals.Simulation shows the efficacy of the proposed algorithm.

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