公开(公告)号：US3859621A

公开(公告)日：1975-01-07

申请号：US41213573

申请日：1973-11-02

Applicant: HONEYWELL INC

Inventor： FOREMAN DONALD S

IPC: G01S3/808 ,  G01S3/80

CPC classification number: G01S3/8083 ,  Y10S367/902

Abstract: The disclosure describes a digital acoustic direction determination system comprising a plurality of transducers each capable of producing electrical signals in response to an acoustic wave. Selection logic circuitry determines the octant or 45 degree arc segment from which the sound originates and transmits an octant digital number representing the octant to an adder. As soon as the wave strikes one of the transducers, a clock generator begins to step a shift register which has stored in it a predetermined bit pattern. The sum of the pulses shifted out of the shift register is proportional to the angle within the selected octant from which the sound originates. These pulses are summed in a counter. The contents of the counter are summed in the adder with the digital number representing the octant. The resultant sum is the exact bearing of the sound origin in degrees.

Abstract translation: 本公开描述了一种数字声学方向确定系统，其包括多个能够响应于声波而产生电信号的换能器。 选择逻辑电路确定声音起始的八分圆或45度弧段，并将表示八分圆的八分数字数字发送给加法器。 一旦波到其中一个换能器，时钟发生器就开始步进一个移位寄存器，它在其中存储了一个预定的位模式。 从移位寄存器移出的脉冲之和与声音起源的所选八分圆内的角度成正比。 这些脉冲在计数器中相加。 计数器的内容与加法器相加，数字数字表示八分圆。 结果总和是以声度为单位的精确方位。