High-Resolution Real-Time Underwater 3-D Acoustical Imaging Through   Designing Ultralarge Ultrasparse Ultra-Wideband 2-D Arrays

doi:10.1109/TIM.2017.2709519

CORC > 北京大学 > 信息科学技术学院

	High-Resolution Real-Time Underwater 3-D Acoustical Imaging Through Designing Ultralarge Ultrasparse Ultra-Wideband 2-D Arrays
	Chi, Cheng ; Li, Zhaohui
刊名	IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
	2017
关键词	3-D acoustical imaging array design high resolution ultralarge ultrasparse ultra-wideband (UUU) 2-D arrays MODULATED EXCITATION SIGNALS LARGE PLANAR ARRAYS MEDICAL ULTRASOUND NEAR-FIELD SONAR SYSTEM VISION LOBE
DOI	10.1109/TIM.2017.2709519
英文摘要	Acoustical imaging systems are an important kind of instrumentation for underwater investigation. Currently, angular resolutions of most existing real-time underwater 3-D imaging systems are around 1 degrees, which cannot meet the high-quality imaging requirement in a relatively far distance. Enhancing the angular resolution of a real-time 3-D imaging system needs enlarging the aperture size of its receiving 2-D array. However, the huge number of elements is not affordable for a traditional fully sampled uniform large 2-D array with half-wavelength interelement spacing to achieve a high angular resolution. This paper proposes the concept of ultralarge ultrasparse ultrawideband (UUU) 2-D arrays for achieving the high angular resolution of underwater 3-D acoustical imaging systems. The design method of UUU 2-D arrays is demonstrated through the example of designing an annular 2-D array with only 100 elements. The capabilities of the designed annular UUU 2-D array are evaluated, showing that it can achieve a 0.1 degrees angular resolution and a -32 dB maximum sidelobe level. The imaging simulations of complicated targets also demonstrate that the designed annular UUU 2-D array can satisfy the requirement of high-resolution underwater 3-D acoustical imaging. The element number of the designed annular UUU 2-D array is 4 orders of magnitude lower than that of a fully sampled uniform 2-D array, which provides a viable choice for developing high-resolution real-time underwater 3-D acoustical imaging systems.; SCI(E); ARTICLE; 10; 2647-2657; 66
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/470642]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Chi, Cheng,Li, Zhaohui. High-Resolution Real-Time Underwater 3-D Acoustical Imaging Through Designing Ultralarge Ultrasparse Ultra-Wideband 2-D Arrays[J]. IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT,2017.
APA	Chi, Cheng,&Li, Zhaohui.(2017).High-Resolution Real-Time Underwater 3-D Acoustical Imaging Through Designing Ultralarge Ultrasparse Ultra-Wideband 2-D Arrays.IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT.
MLA	Chi, Cheng,et al."High-Resolution Real-Time Underwater 3-D Acoustical Imaging Through Designing Ultralarge Ultrasparse Ultra-Wideband 2-D Arrays".IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT (2017).