首页>
外国专利>
METHOD OF AND DEVICE FOR MEASURING TIME OF ACOUSTIC SIGNAL PROPAGATION AMONG OBJECTS SEPARATED BY AQUEOUS MEDIUM
METHOD OF AND DEVICE FOR MEASURING TIME OF ACOUSTIC SIGNAL PROPAGATION AMONG OBJECTS SEPARATED BY AQUEOUS MEDIUM
展开▼
机译:在水介质分离的物体之间测量声信号传播时间的方法和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
Purpose: to determine the propagation time of the acoustic signal between the objects separated by aqueous medium. The purpose of the invention -extension di- apazone defined by the propagation time of the acoustic signal between Neuilly objects while reducing the absorbed power. The method comprises transmitting a sonar signal A from the first object to the second, receiving sonar signal on the second object, transmitting hydroacoustic signal B from the second object to the first, receiving sonar signal B on the first object, measuring the time of sending sonar signal A and received sonar signal B on the first object. And also in use as a sonar signals A and B sequences numbered codewords, each of which consists of a sequence of code elements; is propelling sonar equivalents information quanta of a clock period TI, in memorizing the first and second object images codewords hydroacoustic signals B and A respectively, and receiving sonar signals comprises determining temporal boundaries periods T arrival chip regeneration within specified periods T of said chip in determining the numbers on the second object to the recovered codeword sonar signals a, completely coincides with its image , In the definition of the object in the first chamber M regenerated codeword sonar B, fully matched with its image signal, determining a reception time on the nerve object sonar signal B of said full scale matching between the latter. In a first aspect, there is a control unit 1, a transmitter 2, a receiver 3 of acoustic signals, the meter slot 4, generator 5, the direct signal, the echo of the reference sensor 6, the comparator 7, 8 meter symbol boundary position, the regenerator 9 symbols calculator 10. The second entity comprises a receiver and a transmitter of acoustic signals of the reference sensor the direct signal, the comparison block generator of the echo signal, measuring the position of symbol boundary, characters regenerator. S.p.f 2 BACKGROUND 3-yl. I ate with from 00 to 00 of 00
展开▼