发明名称 ACTIVE SONOBUOY
摘要 PROBLEM TO BE SOLVED: To provide an active sonobuoy allowing the simultaneous use of a plurality of active sonobuoys having the same acoustic signal frequency to allow flexible operation according to an underwater propagation condition such as interference evasion. SOLUTION: A command decoder part 2 outputs a transmission signal 102 after demodulating a transmission command 101, and outputs a frequency change command 108 to a frequency control part 8. The frequency control part 8 outputs a frequency control signal 109 which is change information from the frequency change command 108 to specified frequency, to a transmission part 3. The transmission part 3 transmits an acoustic signal 103 underwater based on the frequency control signal 109. An oscillating part 6 outputs a high frequency signal 106 of prescribed frequency to a modulating part 5. The modulating part 5 modulates the high frequency signal 106 by an echo signal 105 and transmits modulated wave 107 through a transmitting antenna 7. COPYRIGHT: (C)2004,JPO
申请公布号 JP2004085223(A) 申请公布日期 2004.03.18
申请号 JP20020242935 申请日期 2002.08.23
申请人 NEC CORP 发明人 HARADA NAOHISA
分类号 G01S7/52;G01S7/524;(IPC1-7):G01S7/52 主分类号 G01S7/52
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