公开(公告)号：JPH05249239A

公开(公告)日：1993-09-28

申请号：JP18283392

申请日：1992-06-18

Applicant: ALLIANT TECHSYSTEMS INC

Inventor： JIEIMUZU JII KOSAROSU ,  SUTEIIBUN JIEI SENDAA ,  JIEIMUZU ERU ROBAATSU ,  JIYON DEI SHIYURATSUTAA

IPC: G01C13/00 ,  G01S7/52 ,  G01S15/87 ,  G01S15/89

Abstract: PURPOSE: To enable a three-dimensional image of a three-dimensionally measured region to be produced in a short time with a simple and inexpensive system by image-processing a histogram generated by using an azimuth angle, an elevation angle and distance data of backscatter return. CONSTITUTION: A pulse from a transmitter 12 is converted into an acoustic signal by a converter array 14 and emitted in water, received by a receiver, amplified, converted into sample value backscatter data and transmitted to a processor 18. The processor 18 three-dimensionally calculates with an incoming angle of the backscatter data obtained from three elements of the array 14 as an azimuth angle and an elevation angle, and combined with distance and amplitude data to generate a three-dimensional backscatter histogram. An image processing part image-processes the histogram data and creates a topographic map or a three-dimensional measurement model of a threeclimensionally measured region for displaying.