Title:
信号処理装置およびソナー装置
Document Type and Number:
Japanese Patent JP5546391
Kind Code:
B2
Abstract:
Signals entered from receiving transducer elements of 160 channels are multiplexed into 10 signal lines by 10 multiplexers. Each of 10 A/D converters converts the signals of 16 channels from analog from into digital form. The multiplexers are switched with synchronized switching timing to produce 10 pieces of sample data strings with the same timing. 160 pieces of sample data sampled in a steplike form are shifted in phase according to an oblique-line sampling scheme. The signal of the same channel is sampled twice with a phase delay of 90° so that the signal can be converted into complex-valued sample data without increasing the number of processing circuits.
Inventors:
Solder Fruit
Hideharu Morimatsu
Yasushi Nishimori
Mitsuaki Watanabe
Hideharu Morimatsu
Yasushi Nishimori
Mitsuaki Watanabe
Application Number:
JP2010192269A
Publication Date:
July 09, 2014
Filing Date:
August 30, 2010
Export Citation:
Assignee:
FURUNO ELECTRIC CO., LTD.
International Classes:
G01S15/89; G01S7/52; G01S7/526; G01S7/527; G01S13/89; G01S15/42; G01S15/87
Attorney, Agent or Firm:
Patent business corporation Kaede Patent Attorneys' Office