Systems and methods for a high-precision time of arrival ultra-wideband positioning system
First Claim
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1. A method for generating precision localizer messages for an ultra-wideband time-of-arrival positioning system, the method comprising:
- receiving a signal from an atomically accurate reference;
generating a timing signal based on the atomically accurate reference signal;
correcting a system time based on the timing signal; and
transmitting an ultra-wideband signal having a localization message based on the system time.
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Abstract
Systems and methods for a high-precision time of arrival ultra-wideband positioning system are provided. In one embodiment, a method for generating precision localizer messages for an ultra-wideband time-of-arrival positioning system is provided. The method comprises receiving a signal from an atomically accurate reference, generating a timing signal based on the atomically accurate reference signal, correcting a system time based on the timing signal when an error is detected, and transmitting an ultra-wideband signal having a localization message based on the system time.
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Citations
24 Claims
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1. A method for generating precision localizer messages for an ultra-wideband time-of-arrival positioning system, the method comprising:
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receiving a signal from an atomically accurate reference;
generating a timing signal based on the atomically accurate reference signal;
correcting a system time based on the timing signal; and
transmitting an ultra-wideband signal having a localization message based on the system time. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A positioning system, the system comprising:
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one or more reference units each adapted to receive a time signal from at least one atomically accurate reference and maintain a system time based on the time signal, wherein each reference unit is further adapted to transmit a localizer message via an ultra-wideband signal, the localizer message including location information for the reference unit and time information indicating the system time when the localizer message was transmitted; and
a mobile receiver unit adapted to calculate a distance to a first reference unit of the one or more reference units based on a first localizer message received from the first reference unit. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A reference unit for a positioning system, the reference unit comprising:
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means for receiving a time signal from an atomically accurate reference;
means for generating a periodic timing signal based on the atomically accurate reference signal, the means for generating responsive to the means for receiving;
means for maintaining a system time;
means for transmitting an ultra-wideband signal having a localization message, wherein the localization message includes location information for the reference unit and time information indicating the system time when the localization message is transmitted; and
means for correcting the system time based on a difference between the system time and a time embedded within the timing signal, the means for adjusting responsive to the means for generating a periodic timing signal and the means for maintaining a system time. - View Dependent Claims (15, 16)
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17. A computer-readable medium having computer-executable program instructions for a method for generating precision localizer messages for an ultra-wideband time-of-arrival positioning system, the method comprising:
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receiving a signal from an atomically accurate reference;
generating a periodic timing signal based on the global atomically accurate reference signal, wherein the timing signal includes a time message that indicates the time the periodic timing is generated;
correcting a system time based on a difference between the system time and the time message included within the timing signal; and
transmitting an ultra-wideband signal having a localization message based on the system time. - View Dependent Claims (18, 19, 20)
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21. A reference unit for a positioning system, the reference unit comprising:
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a receiver adapted to receive a time signal from at least one atomically accurate reference and generate a periodic timing signal;
an ultra-wideband localizer adapted to transmit a localizer message via an ultra-wideband signal, the localizer message including location information for the reference unit and time information indicating the system time when the localizer message was transmitted;
a clock coupled to the ultra-wideband localizer, wherein the ultra-wideband localizer is adapted to maintain the system time based on the clock;
wherein the ultra-wideband localizer coupled to the receiver and is further adapted to correct the system time based on the periodic timing signal. - View Dependent Claims (22, 23, 24)
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Specification