Angular super-resolution&nbsp; method of marine navigation radar

ZHANG Xin; LIU Xiao-ming; LIU Chang

doi:10.16411/j.cnki.issn1006-7736.2017.02.008

Journal of Dalian Maritime University >

2017 , Vol. 43 >Issue 2: 45 - 52

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2017.02.008

Angular super-resolution method of marine navigation radar

ZHANG Xin ,
LIU Xiao-ming ,
LIU Chang

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（Information Science and Technology College, Dalian Maritime University,Dalian 116026,China）

Received date: 2016-11-21

Revised date: 2016-12-28

Online published: 2016-12-28

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Abstract

A novel super-resolution method was proposed based on the constrained optimization theory for the weakness of angular resolution existed in marine navigation radar, which converted the super-resolution problem into constrained optimization problem under strong target signals. A norm regularization model was designed depending on singular value decomposition (SVD), and the restored angular information was equivalent to the least square solution of the model. On this basis, the interior point method was used to work out the optimal solution after iterations so that the original angular information was restored. Simulation results show that a favorable resolution performance is provided that the resolution can be enhanced accordingly 6, 9 and 4 times while the signal to noise ratio (SNR) equals 10dB, 20dB and 30dB respectively in comparison with the existing norm regularization super-resolution methods. Therefore, desirable capability of adaptive noise is gained by this proposed method, which can improve tremendously the resolution of marine navigation radar.

Key words： marine navigation radar; angular super-resolution; interior point; constrained optimization

Cite this article

ZHANG Xin , LIU Xiao-ming , LIU Chang . Angular super-resolution method of marine navigation radar[J]. Journal of Dalian Maritime University, 2017 , 43(2) : 45 -52 . DOI: 10.16411/j.cnki.issn1006-7736.2017.02.008

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