DOA estimation based on the improved direct data domain method with one sample

被引：0
|
作者：
Xie H. [1 ,2 ]
Dang H. [1 ]
Tan X. [1 ]
Feng D. [2 ]
机构：
[1] Xi'an Branch, China Academy of Space Technology, Xi'an
[2] National Laboratory of Radar Signal Processing, Xidian University, Xi'an
来源：
Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | 2016年 / 38卷 / 09期
关键词：
Direct Data Domain (D[!sup]3[!/sup]); DOA estimation; High-resolution; Small sample support; Sub-array sliding;
D O I：
10.11999/JEIT151398
中图分类号：
学科分类号：
摘要：
Many of the high-resolution Direction Of Arrival (DOA) estimation methods fail to estimate the DOAs of incoming signals and distinguish the two close signals under small sample support; especially only one snapshot is available. To handle this problem, a novel DOA method based on improved Direct Data Domain (D3) technique is proposed. The basic ideal of the proposed method is to augment the time domain samples by sacrificing the space domain degree. Firstly, by splitting the entire array into many overlapping sub-array, many low-dimension samples can be obtained. Secondly, utilizing the property of far-filed narrowband signal that its amplitude response on each array is the same, a new constraint is imposed. Experimental results indicate that the resolution of the propsed method is superior to the conventional algorithms. © 2016, Science Press. All right reserved.
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页码：2371 / 2376
页数：5
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