NDLI: Amplitude-phase discontinuity calibration for phased array radar in varying jamming environment

Content Provider	IET Digital Library
Author	Meng, Ziqiang Li, Yachao Song, Xiufeng Xing, Mengdao Bao, Zheng
Abstract	The amplitude-and-phase error (APE) between phased array channels is notorious in radar signal processing. This error can cause an inaccurate estimate of unknown steering vector of the target echo signal and eventually result in amplitude-phase discontinuity of the phased array output. Thus, how to handle the APE is a meaningful problem, particularly for the varying jamming environment, of which the signal-to-noise ratio is very low. In this study, the authors have developed a new method to obtain real-time amplitude and phase differences between two consecutive weight update periods based on the accurate estimation of steering vector. Such differences can be used to obtain a real-time weight vector with negligible amplitude-phase distortions, and hence improves the phased array signal-processing performance. The proposed method is very flexible: it works well in different array configurations, such as linear, rectangular and Y-shape arrays, and can be efficiently implemented in any eigenstructure-based direction-of-arrival system.
Starting Page	729
Ending Page	737
Page Count	9
ISSN	17519675
Volume Number	8
e-ISSN	17519683
Issue Number	Issue 7, Sep (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-spr/8/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2013.0308
Journal	IET Signal Processing
Publisher Date	2014-04-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Amplitude Difference Amplitude-and-phase Error Amplitude-phase Discontinuity Calibration Amplitude-phase Distortion APE Array Conflgurations Array Signal Processing Calibration Consecutive Weight Update Period Direction of Arrival Estimation Eigen Values And Eigen Function Eigenstructure-based Direction-of-arrival System Electromagnetic Compatibility Error Analysis Interference Jamming Linear Algebra Measurement Standard And Calibration Numerical Analysis Phase Difference Phase Estimation Phased Array Channel Phased Array Radar Phased Array Signal Processing Performance Radar Cross Section Radar Equipment Radar Signal Processing Signal Processing And Detection Signal to Noise Ratio Statistics System And Application Target Echo Signal Unknown Steering Vector Estimation Accuracy Varying Jamming Environment Weight Vector
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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