公开(公告)号：US20180045840A1

公开(公告)日：2018-02-15

申请号：US15730702

申请日：2017-10-11

申请人： Japan Oil, Gas and Metals National Corporation

发明人： Mamoru TAKANASHI ,  Yuki NAKAMURA ,  Yosuke KUNISHI

IPC分类号： G01V1/30 ,  G01V1/00 ,  G01V1/04

摘要： A survey method includes generating a first amplitude modulation signal by amplitude-modulating a carrier wave repeating the same pattern at a predetermined cycle in each of a plurality of vibrators with a modulation signal whose cycle is 1/m times the predetermined period and is different for each of the vibrators, transmitting the seismic wave based on the first amplitude modulation signal, generating a second amplitude modulation signal in one or more receivers, the second amplitude modulation signal being identical to the first amplitude modulation signal generated by any one of the seismic vibrators, generating a reception signal in each of the one or more receivers by receiving a synthetic seismic wave in which the seismic waves generated by the seismic vibrators are synthesized, calculating a correlation value between the reception signal and the second amplitude modulation signal, and analyzing characteristics of the medium on the basis of the correlation value.