公开(公告)号：WO1995014242A1

公开(公告)日：1995-05-26

申请号：PCT/US1994011224

申请日：1994-10-07

Applicant: COASTAL & OFFSHORE PACIFIC CORPORATION ,  HALL, John, D. ,  GORDON, Bruce ,  MILLER, Clarence, Edward ,  BREWER, Kenneth, D.

Inventor： COASTAL & OFFSHORE PACIFIC CORPORATION

IPC: G01S05/28

CPC classification number: G01S3/8083 ,  G01S5/28 ,  G01S11/14

Abstract: An acoustic tracking system designed to allow scientists and fishermen to follow dolphins and whales without harming or harassing them. The system utilizes six flow shielded hydrophones (14-17, 22, 23) mounted on the bottom of a vessel (11) in two arrays of three hydrophones in each array. Acoustic signals of interest (dolphin calls) which strike the hydrophone piezo-electric elements (32) are transmitted to a receiver-display device (51, 52) which determines and displays both the bearing (78) to the signal of interest and the relative range (55) from the vessel to that signal. The receiver-display device utilizes digital microprocessors (67) to determine the difference in signal arrival time of an incoming signal at pairs of hydrophones. The resulting computed bearing to the dolphin call is displayed as a lighted indicator (52) on an electronic heading display. In addition, the digital microprocessors compare the received sound pressure level of incoming signals of interest and display the relative range (55) as a series of lighted LED's on the electronic heading indicator.

Abstract translation: 一种声学跟踪系统，旨在允许科学家和渔民跟随海豚和鲸鱼，而不会伤害或骚扰他们。 该系统在每个阵列中使用安装在容器（11）的底部上的三个水听器的两个阵列中的六个流动屏蔽水听器（14-17,22,23）。 撞击水中压电元件（32）的感兴趣的声学信号（海豚呼叫）被发送到接收机显示设备（51,52），接收机显示设备（51,52）确定并显示轴承（78）与感兴趣的信号和相对 范围（55）从船只到那个信号。 接收机显示装置利用数字微处理器（67）来确定输入信号在水听器对处的信号到达时间的差异。 所得到的计算的对海豚呼叫的承载在电子航标显示器上显示为点亮指示器（52）。 此外，数字微处理器将感兴趣的输入信号的接收声压级进行比较，并将相对范围（55）显示为电子航标指示灯上的一系列点亮的LED。