A method of locating an underwater based system, the method including determining the underwater based system's geo-location, encoding the underwater based system's geo-location for RF transmission, encoding the underwater based system's geo-location for acoustic transmission, and transmitting RF an
A method of locating an underwater based system, the method including determining the underwater based system's geo-location, encoding the underwater based system's geo-location for RF transmission, encoding the underwater based system's geo-location for acoustic transmission, and transmitting RF and acoustic signals containing the encoded geo-location to a receiving station. A locator for locating an underwater based system including a buoy, a global positioning system having an antenna and a receiver, an RF transmission system including an antenna and a transmitter, an underwater acoustic transducer, and a locator control unit adapted to determine the underwater based system's geo-location, encode the underwater based system's geo-location for RF transmission, encode the underwater based system's geo-location for acoustic transmission, and transmit RF and underwater acoustic signals containing the encoded geo-location.
대표청구항▼
1. A locator system for a plurality of water based systems, the locator system comprising: a buoy for connecting to each respective water based system, including: a global positioning system (GPS) module having a GPS antenna and a receiver, and a radio frequency transmission system including an ante
1. A locator system for a plurality of water based systems, the locator system comprising: a buoy for connecting to each respective water based system, including: a global positioning system (GPS) module having a GPS antenna and a receiver, and a radio frequency transmission system including an antenna and a transmitter;an underwater acoustic transducer for connecting to each respective water based system;a locator control system for each respective water based system comprising a processor which is adapted to communicate with the global positioning system module, the radio frequency transmission system, and the underwater acoustic transducer, the locator control system being configured to: determine its geo-location;encode its geo-location for radio frequency transmission;encode its geo-location for acoustic transmission;transmit radio frequency and underwater acoustic signals containing the encoded geo-location at a predetermined time, wherein the predetermined times for each of the plurality of water based systems are selected using a time-division multiple access scheme using a synchronized time received through the GPS; andrepeat the determine, encode, and transmit steps after a predetermined time interval configured to increase over time; anda receiver configured to receive the radio frequency and/or acoustic signals containing the encoded geo-location for each of the plurality of water based systems and to decode each of the plurality of water based water based systems' geo-locations. 2. The locator system of claim 1, wherein each water based system is a torpedo and the determine, encode, and transmit steps are configured to be completed after each torpedo's end of run, respectively. 3. The locator of claim 1, wherein the locator control system is further configured to encrypt the water based system's geo-location before radio frequency or acoustic transmission occurs. 4. The locator system of claim 1, wherein the locator control system is further configured to transmit an acoustic beacon signal. 5. The locator of claim 3, wherein the locator control system is further configured to transmit the acoustic beacon signal at a predetermined time. 6. The locator of claim 1, wherein the radio frequency and acoustic signals containing the encoded geo-location are one-way transmissions. 7. The locator system of claim 1, wherein a time-division multiple access time slot for each of the plurality of water based systems is fixed for the transmission. 8. The locator system of claim 1, wherein a length of a time-division time slot associated with each radio frequency transmission is configured to contain the entire transmission plus a propagation time to a receiver. 9. The locator system of claim 1, wherein a length of a time-division time slot associated with each acoustic transmission is configured to contain the entire transmission plus a time for reflections of acoustic energy to dissipate. 10. A locator system for a plurality of water based systems, the locator system comprising: a tether for connecting to each respective water based system including: a global positioning system (GPS) antenna; anda radio frequency antenna;an underwater acoustic transducer for connecting to each respective water based system;a locator control system for each respective water based system comprising a processor which is adapted to communicate with the global positioning system antenna, the radio frequency antenna, and the underwater acoustic transducer, the locator control system being configured to: determine its geo-location;encode its geo-location for radio frequency transmission;encode its geo-location for acoustic transmission; andtransmit radio frequency and underwater acoustic signals containing the encoded geo-location at a predetermined time, wherein the predetermined times for each of the plurality of water based systems are selected using a time-division multiple access scheme using a synchronized time, wherein a time-division multiple access time slot for each of the plurality of water based systems is selected randomly for the transmission; anda receiver configured to receive the radio frequency and/or acoustic signals containing the encoded geo-location for each of the plurality of water based systems and to decode each of the plurality of water based water based systems' geo-locations. 11. The locator system of claim 10, wherein the number of time slots are larger than the number of the plurality of water based systems to minimize the occurrence of a simultaneous transmission. 12. A locator system for a plurality of water based systems, the locator system comprising: a tether for connecting to each respective water based system including: a global positioning system (GPS) antenna; anda radio frequency antenna;an underwater acoustic transducer for connecting to each respective water based system;a locator control system for each respective water based system comprising a processor which is adapted to communicate with the global positioning system antenna, the radio frequency antenna, and the acoustic transducer, the locator control system being configured to: determine its geo-location;encode its geo-location for radio frequency transmission;encode its geo-location for acoustic transmission; andtransmit radio frequency and underwater acoustic signals containing the encoded geo-location at a predetermined time, wherein the predetermined times for each of the plurality of water based systems are selected using a time-division multiple access scheme using a synchronized time, wherein the geo-location for each of the plurality of water based systems is encoded with error detecting and/or correcting codes; anda receiver configured to receive the radio frequency and/or acoustic signals containing the encoded geo-location for each of the plurality of water based systems and to decode each of the plurality of water based water based systems' geo-locations. 13. The locator system of claim 12 wherein the receiver is further configured to verify the geo-location to validate transmissions and/or encoded geo-location.
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이 특허에 인용된 특허 (29)
Eninger James E. (Torrance CA), Arctic submarine buoy and application methods.
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