Impact of time shift errors on space-time coding array

被引：0
|
作者：
Wang H. [1 ]
Liao G. [1 ]
Xu J. [1 ]
Zhu S. [1 ]
Zeng C. [1 ]
机构：
[1] National Lab of Radar Signal Processing, Xidian University, Xi'an
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2019年 / 41卷 / 11期
关键词：
Ambiguity function; Beampattern error; Space-time coding array (STCA); Time shift error;
D O I：
10.3969/j.issn.1001-506X.2019.11.07
中图分类号：
学科分类号：
摘要：
Space-time coding array (STCA) radar introduces a tiny time shift across array elements. By transmitting an identical waveform, it can form a wide beam with full angular coverage with simplicity in engineering. However, in the practical environment, changes of the system will inevitably induce time shift errors. The impact of time shift error on STCA is studied. We deduce the beampattern error in condition of the deterministic error quantitatively and atttain the closed-form expression. The upper bound in condition of the stochastic error is derived. Besides, we analyze the transmit beampattern response and multi-dimensional ambiguity function to evaluate properties of the spatial coverage, the resolution and sidelobe level in range-angle domain in combination with the simulation results. © 2019, Editorial Office of Systems Engineering and Electronics. All right reserved.
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页码：2446 / 2452
页数：6
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