Tracking radio signal sources
First Claim
1. A method of determining a position of a radio signal transmitter comprising;
- determining a type of radio signal being transmitted from the radio signal transmitter by analyzing the radio signal for radio signal characteristics; and
correlating different sets of information in a way dependent on the determined radio signal type in order to determine the position of the radio signal transmitter;
wherein each set of information corresponds to a different relative position of at least one receiver to the transmitter, each set of information comprising;
radio signal data derived from radio signals received by the at least one receiver from the transmitter at each respective relative position; and
positioning data containing information about a position of the at least one receiver at each respective relative position,wherein the method further comprises;
assessing dynamics of a platform on which the radio signal transmitter is supported, and correlating the different sets of information in a way dependent on the determined dynamics of the platform, andwherein determining the type of radio signal being transmitted from the radio signal transmitter comprises determining whether the type of radio signal originates from a movable radio signal source or a stationary, immovable radio signal source, and when the type of radio signal originates from a movable radio signal source, repeating the correlating of different sets of information to track the mobile radio signal source.
1 Assignment
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Accused Products
Abstract
A method and system of determining the position of a radio signal transmitter are described. The method includes determining the type of radio signal being transmitted from the radio signal transmitter by analysing radio signal characteristics and correlating different sets of information to determine the position of the radio signal transmitter. Each set of information corresponds to a different relative position of at least one receiver to the transmitter and includes radio signal data derived from radio signals received by the at least one receiver from the transmitter at each respective relative position and positioning data containing information about the position of the at least one receiver at each respective relative position.
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Citations
16 Claims
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1. A method of determining a position of a radio signal transmitter comprising;
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determining a type of radio signal being transmitted from the radio signal transmitter by analyzing the radio signal for radio signal characteristics; and correlating different sets of information in a way dependent on the determined radio signal type in order to determine the position of the radio signal transmitter; wherein each set of information corresponds to a different relative position of at least one receiver to the transmitter, each set of information comprising; radio signal data derived from radio signals received by the at least one receiver from the transmitter at each respective relative position; and positioning data containing information about a position of the at least one receiver at each respective relative position, wherein the method further comprises; assessing dynamics of a platform on which the radio signal transmitter is supported, and correlating the different sets of information in a way dependent on the determined dynamics of the platform, and wherein determining the type of radio signal being transmitted from the radio signal transmitter comprises determining whether the type of radio signal originates from a movable radio signal source or a stationary, immovable radio signal source, and when the type of radio signal originates from a movable radio signal source, repeating the correlating of different sets of information to track the mobile radio signal source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16)
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14. An apparatus for determining a position of a radio signal transmitter, comprising:
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means for determining a type of radio signal being transmitted from the radio signal transmitter by analyzing the radio signal for radio signal characteristics, and for correlating different sets of information in a way dependent on the determined radio signal type in order to determine a position of the radio signal transmitter, wherein each set of information corresponds to a different relative position of at least one receiver to the transmitter, each set of information including radio signal data derived from radio signals received by the at least one receiver from the transmitter at each respective relative position, and positioning data containing information about a position of the at least one receiver at each respective relative position; and means for assessing dynamics of a platform on which the radio signal transmitter is supported, and for correlating the different sets of information in a way dependent on the dynamics of the platform, wherein said means for assessing includes means for determining according to the type of radio signal whether the platform is a movable platform or a stationary, immovable platform.
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15. An apparatus comprising non-transient media on which is stored computer readable code that, when loaded onto a computer, causes it to perform a method of determining a position of a radio signal transmitter, the method including:
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determining a type of radio signal being transmitted from the radio signal transmitter by analyzing the radio signal for radio signal characteristics; and correlating different sets of information in a way dependent on the determined radio signal type in order to determine the position of the radio signal transmitter; wherein each set of information corresponds to a different relative position of at least one receiver to the transmitter, each set of information comprising; radio signal data derived from radio signals received by the at least one receiver from the transmitter at each respective relative position; and positioning data containing information about a position of the at least one receiver at each respective relative position, wherein the method further comprises; assessing dynamics of a platform on which the radio signal transmitter is supported, and correlating the different sets of information in a way dependent on the dynamics of the platform, wherein said assessing includes determining according to the type of radio signal whether the platform is a movable platform or a stationary, immovable platform.
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Specification