Robust low-frequency spread-spectrum navigation system

Smith, Stephen F; Moore, James A

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A - human necessities
A01 - agriculture
A21 - baking
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Title: Robust low-frequency spread-spectrum navigation system

Abstract

Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.

Inventors:

Smith, Stephen F ^[1]; Moore, James A ^[2]

Loudon, TN
Powell, TN

Issue Date:: 2011-01-25

Research Org.:: UT-Battelle LLC/ORNL, Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1012777

Patent Number(s):: 7876267

Application Number:: 12/609,902

Assignee:: UT-Battelle, LLC (Oak Ridge, TN)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01C - MEASURING DISTANCES, LEVELS OR BEARINGS

G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING

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G - PHYSICS G01 - MEASURING G01C - MEASURING DISTANCES, LEVELS OR BEARINGS
G01C21/206 - {specially adapted for indoor navigation}

G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
G01S1/042 - {Transmitters}
G01S1/24 - the synchronised signals being pulses or equivalent modulations on carrier waves and the transit times being compared by measuring the difference in arrival time of a significant part of the modulations {, e.g. LORAN systems}
G01S19/10 - providing dedicated supplementary positioning signals
G01S19/18 - Military applications
G01S19/47 - the supplementary measurement being an inertial measurement, e.g. tightly coupled inertial
G01S5/10 - Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements {, e.g. omega or decca systems}

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DOE Contract Number:: AC05-00OR22725

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION

Citation Formats


                    Smith, Stephen F, and Moore, James A. Robust low-frequency spread-spectrum navigation system.  United States: N. p., 2011. 
        Web.

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                    Smith, Stephen F, & Moore, James A. Robust low-frequency spread-spectrum navigation system.  United States.

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                    Smith, Stephen F, and Moore, James A. Tue .  
        "Robust low-frequency spread-spectrum navigation system".  United States.  https://www.osti.gov/servlets/purl/1012777.

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@article{osti_1012777,

  title        = {Robust low-frequency spread-spectrum navigation system},

  author       = {Smith, Stephen F and Moore, James A},

  abstractNote = {Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2011},

  month        = {1}

}

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Works referenced in this record:

Frequency-hopping spread-spectrum modulation for digital communications over electrical power lines
journal, May 1990

Dostert, K. M.
IEEE Journal on Selected Areas in Communications, Vol. 8, Issue 4
https://doi.org/10.1109/49.54466

Global Positioning Systems, Inertial Navigation, and Integration
book, January 2000

Grewal, Mohinder S.; Weill, Lawrence R.; Andrews, Angus P.
John Wiley and Sons
https://doi.org/10.1002/0471200719

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Title: Robust low-frequency spread-spectrum navigation system

Abstract

Citation Formats

Frequency-hopping spread-spectrum modulation for digital communications over electrical power lines journal, May 1990

Global Positioning Systems, Inertial Navigation, and Integration book, January 2000

Frequency-hopping spread-spectrum modulation for digital communications over electrical power lines
journal, May 1990

Global Positioning Systems, Inertial Navigation, and Integration
book, January 2000