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gnss reference for booking precision

A technology of reference equipment and reference data, applied in the direction of instruments, measurement devices, satellite radio beacon positioning systems, etc., can solve the problem of unobtainable positions with high accuracy

Active Publication Date: 2017-07-14
天宝有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This dithering is done through an irreversible process, utilizing a pre-degraded carrier phase to ensure that the user of the rover simply cannot obtain the highly accurate position possible

Method used

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Embodiment Construction

[0024] The disclosure has claims and a detailed description of various embodiments for implementing the claims. The claims describe the scope of the invention. The detailed description shows embodiments for implementing the claimed invention, but it is not exhaustive. Numerous other variations, modifications, and equivalents of the embodiments described herein will be apparent to those skilled in the art, within the scope of these claims. Embodiments are written in terms of Global Positioning System (GPS) or Generic Global Navigation Satellite System (GNSS). The GNSS may be a Global Positioning System (GPS), a Global Orbit Navigation System (GLONASS), a Galileo system, a Chinese Beidou (Compass) system, other similar systems, or a combination of these systems. It should be noted that pseudolites can be used instead of satellites to broadcast GNSS positioning signals. The term "confidential" is used in this application to mean private and secret.

[0025] figure 1 is a sch...

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Abstract

A GNSS reference device with a vector error generator and a reference data server is disclosed herein. A vector error generator generates a sequence of one or more encrypted intentional errors made secret using a confidential error key and combines the sequences to generate a sequence of reference error locations. The reference data server transmits GNSS position determination reference data to determine a GNSS based position based on a reference error position, wherein an encrypted intentional error of at least one secret sequence is reversible by confidential access to a corresponding at least one secret error key.

Description

[0001] Cross References to Related Applications [0002] This application is related to and claims priority to US Patent Application Serial No. 13 / 675,186, filed November 13, 2012, which is hereby incorporated by reference in its entirety. technical field [0003] The techniques described herein relate generally to global navigation satellite system (GNSS) signal processing, and more specifically, to GNSS carrier phase signal processing for providing GNSS position determination with subscribed precision. The technique described here renders GNSS references of predetermined accuracy. Background technique [0004] The Global Positioning System (GPS) is operated by the U.S. government to provide free GPS location signals to all users around the world. A GPS receiver alone can use the coarse / acquisition (C / A) code in these signals to calculate an independent position with an accuracy of typically about 5 meters, or about 2 meters in the case of WAAS. Accuracy. This level of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/04G01S19/07
CPCG01S19/04G01S19/07G01S19/43
Inventor 大卫·G·伯德
Owner 天宝有限公司
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