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Satellite navigation receiver for relative positioning with bias estimation

A satellite navigation and receiver technology, applied in satellite radio beacon positioning systems, instruments, measuring devices, etc., can solve complex problems such as satellites

Active Publication Date: 2018-05-11
DEERE & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because atmospheric and clock errors are not easily modeled or estimated, and tracking changes in visible satellites over time is complex, carrier phase-based time differencing presents a challenging technical problem over a period of time greater than a finite time period

Method used

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  • Satellite navigation receiver for relative positioning with bias estimation
  • Satellite navigation receiver for relative positioning with bias estimation
  • Satellite navigation receiver for relative positioning with bias estimation

Examples

Experimental program
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Embodiment Construction

[0017] According to one embodiment, Figure 1A Disclosed are devices capable of receiving received signals comprising one or more carrier signals transmitted by satellites, such as a first carrier (L1), a second carrier (L2) and a third carrier (L5) of a Global Positioning System (GPS). A system or receiver 11 (eg a satellite navigation receiver). The received signals are sent from one or more satellites, such as navigation satellites, or compatible navigation satellites such as Galileo, (Russian Global Navigation Satellite System) GLONASS satellites or Global Positioning System (GPS) satellites. The satellites have known orbital positions with respect to time which can be used to estimate receiver 11's The location between antenna 17 and each satellite.

[0018] As used herein, "CD" shall refer to a code and "CR" shall refer to a carrier wave of a received signal or a digital representation of one or more samples of the received signal. The code includes a modulation code (...

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PUM

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Abstract

A tracking module (25) processes the determined correlations to track a carrier of the received composite signal for estimation of a change in phase over a time period between a receiver antenna (17)and one or more satellite transmitters that transmit the received signal as the receiver changes position with respect to an initial position during the time period. A relative position estimator estimates (32) the relative position of the navigation receiver with respect to an initial position over the time period time by time-differencing of the phase measurements of the one or more tracked carrier signals. Bias estimators (e.g., 34, 36, and / or 27) can estimate or compensate for errors in initial position and temporal changes in receiver clock and tropospheric delay.

Description

[0001] Cross References to Related Applications [0002] This document (including drawings) claims priority under 35 U.S.C. §119(e) based on U.S. Provisional Application No. 62 / 185,987, filed June 29, 2015, entitled "Satellite Navigation Receiver with Initial Position Bias Compensation" right and benefit of the filing date, of which this provisional application is hereby incorporated herein by reference. technical field [0003] The present disclosure relates to a satellite navigation receiver for relative positioning using bias estimation. Background technique [0004] In some prior art satellite navigation receivers may use relative positioning techniques to estimate the receiver's location. Initial deviations in the receiver's position can degrade the accuracy of the relative and absolute positioning engines. For example, in some prior art satellite navigation receivers may not be able to obtain an accurate absolute position estimate from a relative positioning engine w...

Claims

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Application Information

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IPC IPC(8): G01S19/41
CPCG01S19/43G01S19/51G01S19/29
Inventor 迈克尔·A·塞特泽维戴礼文王敏大卫·S·邱
Owner DEERE & CO
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