US 11,940,573 B1
Navigation-communication-integrated metamaterial sonar for underwater vehicles
Yongyao Chen, Qingdao (CN); Xin Wang, Harbin (CN); Junjie Li, Qingdao (CN); Liang Zhang, Harbin (CN); and Zedong Ma, Harbin (CN)
Assigned to QINGDAO INNOVATION AND DEVELOPMENT CENTER OF HARBIN ENGINEERING UNIVERSITY, Qingdao (CN); and HARBIN ENGINEERING UNIVERSITY, Harbin (CN)
Filed by QINGDAO INNOVATION AND DEVELOPMENT CENTER OF HARBIN ENGINEERING UNIVERSITY, Qingdao (CN); and HARBIN ENGINEERING UNIVERSITY, Harbin (CN)
Filed on Aug. 9, 2023, as Appl. No. 18/446,877.
Claims priority of application No. 202310152222.4 (CN), filed on Feb. 23, 2023.
Int. Cl. G01S 7/524 (2006.01); G01S 7/52 (2006.01); G01S 7/521 (2006.01)
CPC G01S 7/524 (2013.01) [G01S 7/52092 (2013.01); G01S 7/521 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A navigation-communication-integrated metamaterial sonar for underwater vehicles, comprising: a disc array and a backboard; wherein the disc array comprises a group of uniformly arranged discs with same diameters, same intervals and overlapped axes, and the disc array is located at one side of the backboard; water gaps are arranged between the backboard and the disc array and between two adjacent discs of the disc array; thicknesses g of several water gaps are same, and a transducer is placed at an axial center of one water gap of the disc array; the transducer emits and receives underwater acoustic signals in two ways: receiving and emitting combined or separated; by adjusting a period p of the disc array, a board thickness t1 of each disc, the thickness g of each water gap, a radius w1 of the disc array, a radius w2 and a thickness t2 of the backboard, working states of an underwater navigation and an underwater acoustic communication are flexibly switched by changing working frequencies, and a navigation-communication-integrated sonar is realizable.