Indoor satellite navigation system
First Claim
1. A system, for supporting navigation in an enclosed area, comprising:
- at least three spaced-apart micro simulators, each said micro simulator configured to transmit a local Global Navigation Satellite System (GNSS) signal, based on at least three satellite GNSS signals from at least three GNSS satellites of a GNSS satellite system, that represents a different respective location associated with said each micro simulator, said micro simulators including;
a first micro simulator defining a master micro simulator;
a second micro simulator synchronized directly to said first micro simulator;
a third micro simulator synchronized indirectly by being directly synchronized to said second micro simulator and,at least said second and third micro simulators being located within the enclosed area;
wherein said local GNSS signal of each said micro simulator is modified by said each micro simulator in a manner that adjusts the overall average position error.
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Accused Products
Abstract
A navigation system for an enclosed area, the navigation system comprising: a) at least one satellite signal receiving station, positioned outside the enclosed area, to receive satellite signals transmitted by a constellation of satellites and to determine time synchronization information relative to the transmitted signals; b) at least one local transmitting station, positioned within the enclosed area, to transmit a local signal compatible with the transmitted satellite signals; and c) a communication channel to communicate self-alignment information between each station and at least one other station; wherein each local transmitting station uses the self-alignment information to generate the local signal; and wherein the at least one local signal provides navigation information useable by a satellite navigation receiver.
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Citations
27 Claims
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1. A system, for supporting navigation in an enclosed area, comprising:
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at least three spaced-apart micro simulators, each said micro simulator configured to transmit a local Global Navigation Satellite System (GNSS) signal, based on at least three satellite GNSS signals from at least three GNSS satellites of a GNSS satellite system, that represents a different respective location associated with said each micro simulator, said micro simulators including; a first micro simulator defining a master micro simulator; a second micro simulator synchronized directly to said first micro simulator; a third micro simulator synchronized indirectly by being directly synchronized to said second micro simulator and, at least said second and third micro simulators being located within the enclosed area; wherein said local GNSS signal of each said micro simulator is modified by said each micro simulator in a manner that adjusts the overall average position error. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system, for supporting navigation in an enclosed area, comprising:
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at least three spaced-apart micro simulators, each said micro simulator configured to transmit a local Global Navigation Satellite System (GNSS) signal, based on at least three satellite GNSS signals from at least three GNSS satellites of a GNSS satellite system, each said local GNSS signal representing a different respective location associated with said each micro simulator, said at least three spaced-apart micro simulators including; two micro simulators defining master micro simulators; a third micro simulator synchronized, with said two micro simulators, and at least said third micro simulator being located within the enclosed area, and, wherein said local GNSS signal of each said micro simulator is modified by said each micro simulator in a manner that adjusts the overall average position error. - View Dependent Claims (20, 21, 22, 23)
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24. A system, for supporting navigation in an enclosed area, comprising:
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three spaced-apart micro simulators, each said micro simulator configured to transmit a local Global Navigation Satellite System (GNSS) signal, based on the signals of GNSS satellites, each of the local GNSS signals representing a different respective location associated with said each micro simulator, said three spaced-apart micro simulators comprising; a first said micro simulator being a master micro simulator; a second micro simulator synchronized directly to said, first micro simulator; a third micro simulator synchronized indirectly to said first micro simulator by being directly synchronized to said second micro simulator, at least said second and third micro simulators being located within the enclosed area; and
,a communication channel for facilitating exchanging information among said first, second and third micro simulators, said information including, for each said micro simulator, an identity of each of at least one GNSS satellite whose signals are simulated by each said micro simulator. - View Dependent Claims (25, 26, 27)
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Specification