Interbuilding and urban canyon extension solution for global positioning systems
First Claim
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1. An extended capability global positioning system comprising:
- a plurality of transmitters disposed at a plurality of positions for transmitting limited range position signals indicative of the plurality of positions;
a lighting infrastructure whereon the plurality of transmitters are disposed; and
a positioning receiver for receiving GPS signals from the global positioning system for determining a positioning receiver first position in response to the GPS signals, for receiving a limited range position signal from a transmitter in the plurality of transmitters for obtaining a positioning receiver second position in response to the limited range signal indicative of a known transmitter position, and for selecting the positioning receiver second position when the GPS signals are not being accurately received.
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Abstract
A global positioning system (GPS) and auxiliary receiver receive limited range position signals broadcasted from telemetry transmitters when in an urban canyon environment. The limited range receivers preferably are implemented as part of the lighting infrastructure of the environment. The limited range receivers derive power from light from the lighting infrastructure. The receivers can also include a transmitter for retransmitting the receive position data and an ID code to a central processing center.
65 Citations
20 Claims
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1. An extended capability global positioning system comprising:
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a plurality of transmitters disposed at a plurality of positions for transmitting limited range position signals indicative of the plurality of positions;
a lighting infrastructure whereon the plurality of transmitters are disposed; and
a positioning receiver for receiving GPS signals from the global positioning system for determining a positioning receiver first position in response to the GPS signals, for receiving a limited range position signal from a transmitter in the plurality of transmitters for obtaining a positioning receiver second position in response to the limited range signal indicative of a known transmitter position, and for selecting the positioning receiver second position when the GPS signals are not being accurately received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An extension system for a global positioning system comprising:
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a plurality of transmitters disposed at a plurality of positions for transmitting limited range position signals indicative of the plurality of positions said transmitters further comprising wireless power circuits for powering the transmitters and programming interfaces for programming the plurality of positions;
a lighting infrastructure said lighting infrastructure further comprising light apparatuses for disposing the plurality of transmitters thereon and for supplying power to the wireless power circuits for powering the transmitters; and
a positioning receiver for receiving positioning signals said positioning receiver further comprising;
a GPS receiver for receiving GPS signals from the global positioning system for determining a positioning receiver first position in response to the GPS signals;
an auxiliary receiver for receiving a limited range position signal from a transmitter in the plurality of transmitters for determining a positioning receiver second position in response to the limited range signal indicative of a known transmitter position;
a control circuit for selecting the positioning receiver second position when the GPS signals are not being accurately received; and
a transmitter for transmitting an identification code for the positioning receiver and the positioning receiver first position or positioning receiver second position. - View Dependent Claims (17, 18, 19, 20)
control circuits coupled to the wireless power circuits for receiving power, for storing the known transmitter positions received from the programming interfaces, and generating gate signals representative of the stored transmitter positions; and
oscillator circuits for generating carrier signals modulated by the gate signals representative of the stored known transmitter positions and for the transmitting limited range position signals indicative of the known transmitter positions.
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18. The extension system for a global positioning system of claim 17 wherein the control circuits further comprise storage buffers for storing the known transmitter positions received from the programming interface and for storing environmental information related to the transmitter positions.
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19. The extension system for a global positioning system of claim 16 wherein the known transmitter positions are selected from the group consisting of longitude, latitude, and altitude;
- street address;
floor number;
building name;
room number;
column number;
aisle number; and
office number.
- street address;
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20. The extension system for a global positioning system of claim 16 wherein the transmitters transmit at a selectable low power level with a range of several feet to a few hundred feet.
Specification
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Current AssigneeRockwell Science Center LLC
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Original AssigneeRockwell Science Center LLC
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InventorsMitchell, James P.
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Primary Examiner(s)Tarcza, Thomas H.
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Assistant Examiner(s)PHAN, DAO LINDA
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Application NumberUS09/346,574Time in Patent Office593 DaysField of Search342/357.01, 342/357.06, 342/386, 342/457, 342/463, 701/213US Class Current342/386CPC Class CodesG01S 1/042 TransmittersG01S 1/68 Marker, boundary, call-sign...G01S 19/48 by combining or switching b...G01S 5/0027 of actual mobile position, ...H04B 7/2609 Arrangements for range cont...Y02A 30/60 Planning or developing urba...
