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Navigation receiver and method for combined use of a standard RTK system and a global carrier-phase differential positioning system

A technology of navigation receiver and positioning system, applied in satellite radio beacon positioning system, positioning, radio wave measurement system and other directions, can solve problems such as poor definition

Active Publication Date: 2014-07-09
NAVCOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, WADGPS techniques typically treat integer ambiguities as real-valued (non-integer) variables and solve for "floating point ambiguities", which are usually very poorly defined until measurements covering time intervals of significant satellite geometry change have been obtained until

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  • Navigation receiver and method for combined use of a standard RTK system and a global carrier-phase differential positioning system
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  • Navigation receiver and method for combined use of a standard RTK system and a global carrier-phase differential positioning system

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Embodiment Construction

[0027] Combination of Local Positioning System and Wide Area Differential Positioning System

[0028] figure 1 A wide area or global differential GPS (WADGPS) system 100 is shown according to one embodiment of the present invention. Such as figure 1 As shown, WADGPS system 100 includes a network of reference stations 120 each having a GPS receiver 122 and one or more processing concentrators 105 . Reference stations 120 continuously provide raw GPS observables to concentrator 105 for processing. These observables include GPS code and carrier phase measurements, ephemeris, and other information obtained from signals received at the reference station 120 from the plurality of satellites 110 . Reference stations 120 are placed at known locations across wide area 101 (such as continents, for a wide-area DGPS system) or across the Earth (for a global DGPS network). Concentrator 105 is a facility that processes GPS observables and computes DGPS connections. If multiple indepe...

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Abstract

A mobile satellite navigation receiver for calculating an offset between a local positioning system and a wide-area satellite positioning system is presented. The mobile satellite navigation receiver determines a first solution of a position of the mobile satellite navigation receiver relative to a first local positioning system, wherein the first local positioning system includes one or more reference receivers at known locations. The mobile satellite navigation receiver determines a second solution of the position of the satellite navigation receiver relative to a wide-area differential satellite positioning system. The mobile satellite navigation receiver then calculates an offset between the first solution and the second solution.

Description

[0001] related application [0002] This application is a continuation-in-part of U.S. Patent Application Serial No. 11 / 345,124, filed January 31, 2006, which is a continuation of U.S. Patent Application Serial No. 10 / 757,340, filed January 13, 2004, This is now a continuation-in-part of US Patent No. 7,119,741 issued October 10, 2006. The contents of each of the foregoing applications are hereby incorporated by reference in their entirety. technical field [0003] The disclosed embodiments generally involve the use of a standard RTK system in combination with a global carrier phase differential positioning system. Background technique [0004] The Global Positioning System (GPS) uses satellites in space to locate objects on Earth. GPS uses L-band signals from satellites that are tracked by a GPS receiver and used to determine the location of the GPS receiver. Currently, two types of GPS measurements are available within civilian GPS receivers for each carrier signal of e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/14G01S19/48G01S19/41G01S19/42G01S19/44
CPCG01S19/41G01S19/42G01S19/44
Inventor R.R.黑奇L.L.戴C.王D.J.埃斯林格R.T.夏普
Owner NAVCOM TECH