Azimuth Estimation in Periodic Linear Sparse Array by Modified Amplitude Comparison Monopulse Radar

被引：0

作者：

Gupta, A. ^{[1
]}

Fickenscher, Th. ^{[1
]}

Herschel, R. ^{[1
]}

Holters, M. ^{[2
]}

Hinz, J. ^{[2
]}

机构：

[1] Helmut Schmidt Univ, Dept High Frequency Engn, Holstenhofweg 85, D-22043 Hamburg, Germany

[2] Helmut Schmidt Univ, Dept Signal Proc & Commun, D-22043 Hamburg, Germany

来源：

2010 ASIA-PACIFIC MICROWAVE CONFERENCE | 2010年

关键词：

Monopulse radar; sparse array; adaptive array; high-frequency radar;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Estimation of direction of arrival (DOA) of a radar backscatter signal by means of an amplitude comparison monopulse estimation scheme (ACMES) is a common high precision technique. But due to spatial undersampling in a sparse array architecture the conventional ACMES results in azimuth ambiguity. In this paper it is proposed that azimuth ambiguity due to sparse array can be mitigated by replacing the sum beam in ACMES with a flat-top beam while keeping the difference beam unchanged. This approach was adapted and simulated for a naval HF Surface Wave Radar (HF SWR) with an array sparsely distributed among 4 mobile platforms each with a dense 9 element primary array. For a single target scenario the results confirm that the proposed approach achieves a precise angular estimate using a periodic sparse linear array.

引用

页码：2083 / 2086

页数：4

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