Systems and methods for vessel position reporting and monitoring
First Claim
Patent Images
1. A method of transmitting a message that identifies a geographical position from a transmitter device, the method comprising:
- storing one or more prior geographical positions of the transmitter device in a memory;
selecting a predetermined point layout from a plurality of predetermined point layouts, each of the plurality of predetermined point layouts comprising a plurality of predefined point positions;
associating each of one or more prior geographical positions to respective nearest predefined point positions in the predetermined point layout to generate a track history;
encoding the track history to generate an encoded track history;
generating the message comprising the encoded track history; and
transmitting the message.
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Accused Products
Abstract
Systems and methods for vessel position reporting and monitoring. Methods and systems for augmenting e-Navigation messages to provide ancillary information, such as a history of previous vessel positions. A compact representation is provided, in which transmitters may select among a plurality of possible position layouts to provide a compact representation. Transmitted messages are received by a satellite or other surveillance platform employing a compatible radio frequency receiver to collect message signals over a large area or great distance.
14 Citations
27 Claims
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1. A method of transmitting a message that identifies a geographical position from a transmitter device, the method comprising:
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storing one or more prior geographical positions of the transmitter device in a memory; selecting a predetermined point layout from a plurality of predetermined point layouts, each of the plurality of predetermined point layouts comprising a plurality of predefined point positions; associating each of one or more prior geographical positions to respective nearest predefined point positions in the predetermined point layout to generate a track history; encoding the track history to generate an encoded track history; generating the message comprising the encoded track history; and transmitting the message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus for transmitting a message that identifies a geographical position, the apparatus comprising:
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a memory that stores one or more prior geographical positions of the apparatus; a processor configured to; select a predetermined point layout from a plurality of predetermined point layouts, each of the plurality of predetermined point layouts comprising a plurality of predefined point positions; associate each of one or more prior geographical positions to respective nearest predefined point positions in the predetermined point layout to generate a track history; encode the track history to generate an encoded track history; generate the message comprising the encoded track history; and a transmitter that transmits the message.
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22. A non-transitory computer readable medium storing computer executable instructions, the instructions, when executed by a computer processor of a transmitter device, for causing the computer processor to perform a method of transmitting a message that identifies a geographical position, the method comprising:
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storing one or more prior geographical positions of the transmitter device in a memory; selecting a predetermined point layout from a plurality of predetermined point layouts, each of the plurality of predetermined point layouts comprising a plurality of predefined point positions; associating each of one or more prior geographical positions to respective nearest predefined point positions in the predetermined point layout to generate a track history; encoding the track history to generate an encoded track history; generating the message comprising the encoded track history; and controlling a transmitter to transmit the message.
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23. A method of transmitting a message that identifies a geographical position, the method comprising:
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selecting a first dimensional component value array, wherein the first dimensional component value array defines the values of successive points in a predetermined point layout that has a plurality of predefined point positions; encoding a track history to generate an encoded track history, wherein the track history comprises one or more track history points based on prior geographical positions, and wherein each of the track history points is determined with reference to the predetermined point layout; generating the message comprising the encoded track history; and transmitting the message. - View Dependent Claims (24, 25, 26, 27)
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Specification