First responder positioning apparatus
First Claim
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1. An apparatus for determining location of a personnel badge, comprising:
- a personnel badge having a ranging transponder for responding automatically to base ranging signals with respective return ranging signals;
a primary enabler having a first location, the primary enabler having a first two-way ranger radio for measuring a first round trip time between transmitting a first of said base ranging signals and receiving a first of said return ranging signals;
at least one secondary enabler having a corresponding second location, the secondary enabler having a second two-way ranger radio for determining a second round trip time between transmitting a second of said base ranging signals and receiving a second of said return ranging signals; and
a badge locator constructed for determining a location of the badge from positioning information derived from said first and second locations and said first and second round trip times.
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Abstract
A positioning system for tracking the location of a first responder emergency worker. The system includes mobile enabler units and a personnel badge having a ranging transponder. Two enabler units can use two-way ranging signals, a prescribed turn around time and differential altitude for automatically tracking the location of the badge.
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Citations
14 Claims
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1. An apparatus for determining location of a personnel badge, comprising:
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a personnel badge having a ranging transponder for responding automatically to base ranging signals with respective return ranging signals;
a primary enabler having a first location, the primary enabler having a first two-way ranger radio for measuring a first round trip time between transmitting a first of said base ranging signals and receiving a first of said return ranging signals;
at least one secondary enabler having a corresponding second location, the secondary enabler having a second two-way ranger radio for determining a second round trip time between transmitting a second of said base ranging signals and receiving a second of said return ranging signals; and
a badge locator constructed for determining a location of the badge from positioning information derived from said first and second locations and said first and second round trip times. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for determining location of a personnel badge, comprising:
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automatically responding at a badge location to base ranging signals with respective return ranging signals;
determining a first round trip time between transmitting a first of said base ranging signals and receiving a first of said return ranging signals at a first location;
determining a second round trip time between transmitting a first of said base ranging signals and receiving a second of said return ranging signals at a second location; and
determining said badge location from positioning information derived using said first and second locations and said first and second round trip times. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification