基于时空干扰特征的GPS抗干扰子空间投影技术性能分析

信号处理 Pub Date : 2001-08-06 DOI:10.1109/SSP.2001.955297

M. Amin, Liang Zhao, A. Lindsey

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引用次数: 2

摘要

在宽带通信平台中，利用多天线接收机到达信号的空间和时频联合特征来有效抑制非平稳干扰。本文对GPS接收机中抑制调频干扰的子空间投影阵列处理技术进行了性能分析。调频干扰机是瞬时窄带干扰，具有明显的时频((t-f))特征，与GPS C/A扩频编码不同。本文假设干扰机的空间特征是准确估计的，但其瞬时频率(为构建干扰机子空间提供基础)的估计呈现零均值独立高斯误差。仿真结果比较了单天线和多天线GPS接收机中频误差的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Performance analysis of subspace projection techniques for anti-jamming GPS using spatio-temporal interference signatures

Combined spatial and time-frequency signatures of signal arrivals at multi-antenna receivers has been used for effective nonstationary interference suppression in broadband communication platforms. This paper presents a performance analysis of subspace projection array processing techniques for suppression of frequency modulated (FM) jammers in GPS receivers. The FM jammers are instantaneous narrowband and have clear time-frequency ((t-f)) signatures that are distinct from the GPS C/A spread spectrum code. The paper assumes that the spatial signature of the jammer is accurately estimated, but its instantaneous frequency (IF) estimate, which provides the basis for construction of the jammer subspace exhibits zero-mean independent Gaussian errors. Simulation results comparing the effects of IF errors in a single and multi-antenna GPS receivers are provided.

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来源期刊

信号处理

自引率

0.00%

发文量

5812

期刊介绍： Journal of Signal Processing is an academic journal supervised by China Association for Science and Technology and sponsored by China Institute of Electronics. The journal is an academic journal that reflects the latest research results and technological progress in the field of signal processing and related disciplines. It covers academic papers and review articles on new theories, new ideas, and new technologies in the field of signal processing. The journal aims to provide a platform for academic exchanges for scientific researchers and engineering and technical personnel engaged in basic research and applied research in signal processing, thereby promoting the development of information science and technology. At present, the journal has been included in the three major domestic core journal databases "China Science Citation Database (CSCD), China Science and Technology Core Journals (CSTPCD), Chinese Core Journals Overview" and Coaj. It is also included in many foreign databases such as Scopus, CSA, EBSCO host, INSPEC, JST, etc.