UNDERWATER VEHICLE COMMUNICATIONS SYSTEM
First Claim
1. An underwater vehicle communications system comprising at least one underwater vehicle provided with a transceiver, and at least one station provided with a transceiver, wherein each of said transceivers comprise:
- at least one transmitter and at least remote receiver, said at least one transmitter comprising;
a data input representative of image data at least;
a modulator, for modulating the input data onto a carrier signal; and
an antenna for transmitting modulated electromagnetic and/or magnetic signals, andsaid at least one receiver comprising;
an antenna for receiving modulated electromagnetic and/or magnetic signals,wherein at least one of the said transceivers is underwater and each of said transceivers is operable to transmit data to other of said transceivers,wherein each said transmitter further comprises a digital data compressor for compressing said image data at least that is to be transmitted wherein the said digital data compressor is configured to reduce occupied transmission bandwidth such as to increase the range of signal reception underwater.
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Accused Products
Abstract
An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a carrier signal. An electrically insulated, magnetic coupled antenna transmits the compressed, modulated signals. The receiver that has an electrically insulated, magnetic coupled antenna for receiving a compressed, modulated signal. A demodulator is provided for demodulating the signal to reveal compressed data. A de-compressor de-compresses the data. An appropriate human interface is provided to present transmitted data into text/audio/visible form. Similarly, the transmit system comprises appropriate audio/visual/text entry mechanisms.
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Citations
21 Claims
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1. An underwater vehicle communications system comprising at least one underwater vehicle provided with a transceiver, and at least one station provided with a transceiver, wherein each of said transceivers comprise:
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at least one transmitter and at least remote receiver, said at least one transmitter comprising; a data input representative of image data at least; a modulator, for modulating the input data onto a carrier signal; and an antenna for transmitting modulated electromagnetic and/or magnetic signals, and said at least one receiver comprising; an antenna for receiving modulated electromagnetic and/or magnetic signals, wherein at least one of the said transceivers is underwater and each of said transceivers is operable to transmit data to other of said transceivers, wherein each said transmitter further comprises a digital data compressor for compressing said image data at least that is to be transmitted wherein the said digital data compressor is configured to reduce occupied transmission bandwidth such as to increase the range of signal reception underwater. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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5. (canceled)
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20. An underwater vehicle communications system operable to allow communication between an underwater vehicle and a corresponding station, said communications system comprising at least one underwater vehicle provided with a transceiver and a corresponding station provided with a transceiver, each transceiver comprising at least one transmitter and at least one receiver, said at least one transmitter comprising:
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a data input; a modulator, for modulating the input data onto a carrier signal; and an antenna for transmitting modulated electromagnetic and/or magnetic signals to a remote receiver, and said at least one receiver comprising; an antenna for receiving modulated electromagnetic and/or magnetic signals, wherein at least one of said transceivers is underwater, wherein each said transmitter further comprises a digital data compressor for compressing said image data at least that is to be transmitted wherein the said digital data compressor is configured to reduce occupied transmission bandwidth such as to increase the range of signal reception underwater.
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21. An underwater vehicle communications system comprising at least one underwater vehicle provided with a transceiver, and at least one station provided with a transceiver, wherein each of said transceivers comprise:
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at least one transmitter and at least remote receiver, said at least one transmitter comprising; a data input representative of image data at least; a modulator, for modulating the input data onto a carrier signal; and an antenna for transmitting modulated electromagnetic and/or magnetic signals, and said at least one receiver comprising; an antenna for receiving modulated electromagnetic and/or magnetic signals, wherein at least one of the said transceivers is underwater and each of said transceivers is operable to transmit data to other of said transceivers within a near field of said electromagnetic and/or magnetic signals, said near field corresponding to the region around the transmitter wherein at least one of inverse distance squared (1/r2) and inverse distance cubed (1/r3) field components of said electromagnetic and/or magnetic signals is greater than an inverse distance (1/r) field component thereof.
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Specification