A Direction Finding Method and Analysis Based on the Rotated Long Baseline Interferometer

ZHANG Min; GUO Fu-cheng; LI Teng; ZHOU Yi-yu

doi:10.3969/j.issn.0372-2112.2013.12.016

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A Direction Finding Method and Analysis Based on the Rotated Long Baseline Interferometer

更新时间：2025-07-16

- A Direction Finding Method and Analysis Based on the Rotated Long Baseline Interferometer
- Acta Electronica Sinica Vol. 41, Issue 12, Pages: 2422-2429(2013)
- 作者机构：
  
  1. 国防科技大学电子科学与工程学院,湖南,长沙,410073
  2. 海军装备研究院,北京,100161
  3. 国防科技大学电子科学与工程学院,湖南,长沙,410073
  4. 海军装备研究院,北京,100161
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0372-2112.2013.12.016
  CLC： TN971
- Published：2013
- 稿件说明：
移动端阅览
ZHANG Min, GUO Fu-cheng, LI Teng, et al. A Direction Finding Method and Analysis Based on the Rotated Long Baseline Interferometer[J]. Acta Electronica Sinica, 2013, 41(12): 2422-2429.
DOI：

ZHANG Min, GUO Fu-cheng, LI Teng, et al. A Direction Finding Method and Analysis Based on the Rotated Long Baseline Interferometer[J]. Acta Electronica Sinica, 2013, 41(12): 2422-2429. DOI： 10.3969/j.issn.0372-2112.2013.12.016.

摘要

针对传统多通道干涉仪和阵列测向系统复杂、易受通道间幅相不一致性影响，分析了旋转长基线干涉仪（RLBI）测向的两类相位差观测模型，进而推导了无模糊测向条件，提出了一种基于多假设伪线性迭代最小二乘（MHPILS）的测向方法，并分析了测向误差克拉美-罗下限（CRLB）和均方误差（MSE）.仿真结果表明该方法运算量适中，测向精度可接近CRLB.

Abstract

Due to the complexity and amplitude-phase inconsistencies in traditional multi-channel interferometer and array

two phase difference observation models for direction finding based on the rotated long baseline interferometer(RLBI)is analyzed.The unambiguous direction finding conditions for the proposed models are derived.A multiple hypothesis pseudolinear iteration least square(MHPILS)algorithm is proposed.The Cramer-Rao low bound(CRLB)and mean square error(MSE)is also analyzed.The simulation results show that this method achieves moderate computation amount and can attain the CRLB.

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