Methods and apparatus for underwater electrical near-field signal system
First Claim
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1. A near-field signal system to generate signals underwater, comprising:
- a signal processing module;
a first antenna to transmit electrical near-field signals underwater coupled to the signal processing module;
a second antenna to receive near-field signals underwater transmitted by the first antenna, wherein the second antenna is coupled to the signal processing module; and
a salinity sensor to measure salinity of water coupled to the signal processing module, wherein a current and/or a voltage of the electrical near-field signals transmitted by the first antenna is adjusted based upon the measured water salinity.
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Abstract
Methods and apparatus for a near-field signal system to generate signals underwater for navigation and/or communication. In one embodiment, a system includes a signal processing module coupled to a first antenna to transmit near-field signals underwater and a second antenna to receive near-field signals underwater transmitted by the first antenna. In one embodiment, a wetsuit includes an integrated near-field signal system.
8 Citations
22 Claims
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1. A near-field signal system to generate signals underwater, comprising:
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a signal processing module; a first antenna to transmit electrical near-field signals underwater coupled to the signal processing module; a second antenna to receive near-field signals underwater transmitted by the first antenna, wherein the second antenna is coupled to the signal processing module; and a salinity sensor to measure salinity of water coupled to the signal processing module, wherein a current and/or a voltage of the electrical near-field signals transmitted by the first antenna is adjusted based upon the measured water salinity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method, comprising:
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measuring salinity of water using a salinity sensor, transmitting electrical near-field signals underwater by a first antenna, wherein a current and/or a voltage of the electrical near-field signals transmitted by the first antenna is based upon the measured water salinity; receiving near-field signals underwater transmitted by the first antenna; and processing the received near-field signals to provide information to a user. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 21, 22)
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18. A system, comprising:
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a display; a signal processing means coupled to the display, the signal processing means to generate signals for transmission of electrical near-field signals underwater by a first antenna and to process near-field signals transmitted by the first antenna and received by a second antenna, and a salinity sensor to measure salinity of water coupled to the signal processing module, wherein a current and/or a voltage of the electrical near-field signals transmitted by the first antenna is adjusted based upon the measured water salinity.
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19. A near field communication system for generating signals underwater, comprising:
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a signal processing module; a first antenna to transmit signals; a second antenna to receive near field signals originating from a further near field communication system that is underwater, wherein the first antenna and the second antenna are connected to the signal processing module, and a salinity sensor to measure salinity of water coupled to the signal processing module, wherein a current and/or a voltage of the signals transmitted by the first antenna is adjusted based upon the measured water salinity.
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20. A near field signal system for generating signals underwater comprising:
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a signal processing module; a first antenna to transmit a navigation signal, a communication signal, or both; a second antenna to receive the navigation signal from the first antenna or a communication signal from a further near field signal system; and a salinity sensor to measure salinity of water coupled to the signal processing module, wherein a current and/or a voltage of the signal transmitted by the first antenna is adjusted based upon the measured water salinity; wherein first and second antennas are connected to the signal processing module, and wherein the signal processing module is configured to interpret the received signals as either the navigation signal from the first antenna or the communication signal from the further near field signal system.
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Specification