Globally referenced positioning in a shielded environment
First Claim
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1. An apparatus for determining position that is resistant to interference and capable of use within a shielded environment comprising:
- a UWB receiver;
a GPS receiver;
a bent-path GPS receiver;
a GPS re-radiation antennae position outside the shielded environment, said antennae configured to remove biases introduced by different ionospheric conditions, magnetic fields when using a single satellite signal;
an intelligent control operatively connected to the UWB receiver, the GPS receiver, and the bent-path GPS receiver;
the bent-path receiver adapted to receive a heterodyned GPS signal comprising a GPS radio frequency wave and a wave of a different frequency, and to deheterodyne the heterodyned GPS signal to extract the GPS radio frequency wave;
the intelligent control adapted to determine a globally referenced position at least partially based on integrating and correlating ultra wideband data received from;
the UWB receiver, GPS data received from the GPS receiver, and/or GPS data received from the bent-path GPS receiver;
wherein the GPS re-radiation antennae is capable of transmitting GPS signals onto multiple wireless radio frequency carriers simultaneously, or in a center channel frequency hopping mode in order to reduce the possibility of having the GPS heterodyned signals jammed or spoofed.
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Abstract
A method, apparatus and system for globally referenced positioning in a shielded environment includes integrating and correlating information from a UWB receiver, a GPS receiver, and a bent-path GPS receiver adapted to extract a GPS radio frequency wave from a heterodyned GPS signal. The method, apparatus, and system is resistant to interference and can be used in a shielded environment such as indoors or behind a line-of-sight barrier.
24 Citations
15 Claims
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1. An apparatus for determining position that is resistant to interference and capable of use within a shielded environment comprising:
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a UWB receiver; a GPS receiver; a bent-path GPS receiver; a GPS re-radiation antennae position outside the shielded environment, said antennae configured to remove biases introduced by different ionospheric conditions, magnetic fields when using a single satellite signal; an intelligent control operatively connected to the UWB receiver, the GPS receiver, and the bent-path GPS receiver; the bent-path receiver adapted to receive a heterodyned GPS signal comprising a GPS radio frequency wave and a wave of a different frequency, and to deheterodyne the heterodyned GPS signal to extract the GPS radio frequency wave; the intelligent control adapted to determine a globally referenced position at least partially based on integrating and correlating ultra wideband data received from;
the UWB receiver, GPS data received from the GPS receiver, and/or GPS data received from the bent-path GPS receiver;wherein the GPS re-radiation antennae is capable of transmitting GPS signals onto multiple wireless radio frequency carriers simultaneously, or in a center channel frequency hopping mode in order to reduce the possibility of having the GPS heterodyned signals jammed or spoofed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification
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Current AssigneeLightwaves Systems, Inc.
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Original AssigneeLightwaves Systems, Inc.
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InventorsMelick, Bruce D., Snyder, David M., Baych, Leslie D., Kennedy, Philip T.
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Primary Examiner(s)LIU, HARRY K
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Application NumberUS14/247,814Publication NumberTime in Patent Office1,008 DaysField of Search342/357.59US Class Current1/1CPC Class CodesG01S 1/045 ReceiversG01S 19/11 wherein the cooperating ele...G01S 19/21 Interference related issues...
