US 8,570,216 B2Granted

Differential correction system enhancement leverages roving receivers enabled for a non-GPS, secondary PN and T signal to characterize local errors

AssigneeThe Boeing Company

InventorsGregory M. Gutt, Arun Ayyagari, David A. Whelan, Michael Lee O'Connor, David G. Lawrence

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Abstract

System, methods, and devices for a self-sustaining differential corrections network that employs roving reference devices (RRDs) as reference stations for improving positioning, navigation, and timing (PN&T) solutions for other enabled local roving and/or stationary receiving devices (RDs) are disclosed herein. The disclosed differential correction system enhancement leverages RRDs enabled for a non-global positioning system (non-GPS), secondary PN&T signal to characterize local errors. These local errors are then used by local RDs in combination with a signal to calculate an improved PN&T estimate for the RDs.

Claims36

Dependent claims

A system for providing differential corrections for positioning, the system comprising:

a roving reference device (RRD) that is aware of its geographic location via a first position-finding system, the RRD comprising:
a RRD receiver for receiving a signal from at least one transmission source associated with a second position-finding system, wherein the RRD is aware of a location of the at least one transmission source,
a RRD clock for collecting a first measurement of the signal,
a RRD memory for storing the first measurement,
a RRD processor for processing the first measurement, the location of the RRD, and the location of the at least one transmission source to generate differential correction information,
a RRD transmitter for transmitting a differential correction information signal that includes the differential correction information;
and
a receiving device (RD) comprising:
a RD first receiver for receiving the signal from the at least one transmission source, wherein the RD is aware of the location of the at least one transmission source,
a RD clock for collecting a second measurement of the signal,
a RD memory for storing the second measurement,
a RD second receiver for receiving the differential correction information signal from the RRD,
a RD processor for processing the differential correction information, the second measurement, and the location of the at least one transmission source to generate a location estimate for the RD.

10 more elements

A system for providing differential corrections for positioning, the system comprising:

a roving reference device (RRD) that is aware of its geographic location via a first position-finding system, the RRD comprising:
a RRD receiver for receiving a signal from at least one transmission source associated with a second position-finding system,
a RRD clock for collecting a first measurement of the signal,
a RRD transmitter for transmitting a RRD signal that includes the first measurement and the location of the RRD;
and
a receiving device (RD) comprising:
a RD first receiver for receiving the signal from the at least one transmission source, wherein the RD is aware of a location of the at least one transmission source,
a RD clock for collecting a second measurement of the signal,
a RD second receiver for receiving the RRD signal from the RRD,
a RD memory for storing the first measurement, the second measurement, and the location of the RRD,
a RD processor for processing the second measurement and the location of the at least one transmission source to generate a location estimate for the RD,
for processing the first measurement, the location of the RRD, and the location of the at least one transmission source to generate differential correction information, and
for processing the differential correction information and the location estimate for the RD to generate a corrected location estimate for the RD.

10 more elements

A system for providing differential corrections for positioning, the system comprising:

a roving reference device (RRD) that is aware of its geographic location via a first position-finding system, the RRD comprising:
a RRD receiver for receiving a signal from at least one transmission source associated with a second position-finding system,
a RRD clock for collecting a first measurement of the signal,
a RRD transmitter for transmitting a RRD signal that includes the first measurement and the location of the RRD;
a receiving device (RD) comprising:
a RD receiver for receiving the signal from the at least one transmission source,
a RD clock for collecting a second measurement of the signal,
a RD transmitter for transmitting a RD signal that includes the second measurement;
and
an intermediary device that is aware of a location of the at least one transmission source, the intermediary device comprising:
an intermediary first receiver for receiving the RRD signal from the RRD,
an intermediary second receiver for receiving the RD signal from the RD,
an intermediary processor for processing data of the RRD signal and data of the RD signal and the location of the at least one transmission source to generate a location estimate for the RD and to generate differential correction information, and
for processing the differential correction information and the location estimate for the RD to generate a corrected location estimate for the RD.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/114,027Filed 23 May 2011 · continuation in part
Priority: 30 May 2008
Published: US 2012/0139782 A17 Jun 2012
Granted: 29 Oct 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

G01S 19/074
Involving a network of fixed stations: providing integrity data, e.g. WAAS
G01S 5/0072
Transmission of position information to remote stations: transmission between mobile stations, e.g. anti-collision systems
G01S 5/009
Transmission of position information to remote stations: transmission of differential positioning data to mobile
G01S 5/021
Details: calibration, monitoring or correction

Family

Application12/130,880Parent of this continuation-in-part · filed 30 May 2008
US 2012/0139782 A1Pre-grant publication · published 7 Jun 2012
US 7,952,518 B2Parent of this continuation-in-part
US 2009/0315769 A1Published application
US 8,570,216 B2This patent

From the US filing history. Foreign family members aren’t listed.

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