Method and device for optimizing protection level of advanced receiver autonomous integrity monitoring

An integrity monitoring and receiver technology, applied in the field of aviation surveillance, can solve problems such as faulty satellite mis-distribution and omission, dangerous misleading information, and unbalanced geometric distribution of satellites, etc.

Active Publication Date: 2020-01-14
BEIHANG UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in practical applications, especially when the number of visible satellites is small, the geometric distribution of satellites tends to be unbalanced, resulting in mis-arrangement and omission of faulty satellites, forming dangerous misleading information, and affecting the autonomous integrity of advanced receivers Integrity of sex monitoring

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  • Method and device for optimizing protection level of advanced receiver autonomous integrity monitoring
  • Method and device for optimizing protection level of advanced receiver autonomous integrity monitoring
  • Method and device for optimizing protection level of advanced receiver autonomous integrity monitoring

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Embodiment Construction

[0021] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. Rather, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0022] The terms "including" and "having" in the specification and claims of the present invention and the drawings and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes unlisted steps or units, o...

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Abstract

The invention provides a method and device for optimizing the protection level of advanced receiver autonomous integrity monitoring. The method comprises the steps of calculating global positioning information of a receiver and subset positioning information of a fault subset according to ISM information of a plurality of satellites; calculating the distribution of positioning estimation errors ofthe receiver and the distribution of detection statistics of the fault subset according to the global positioning information and the subset positioning information; if it is determined that the detection statistics pass the detection, calculating the optimized protection level according to an optimization function for minimizing the integrity risk, the distribution of the positioning estimationerrors and the distribution of the detection statistics; and if the ARIAM is judged to be available according to the optimized protection level, outputting a positioning result of the receiver. According to the method provided by the embodiment of the invention, whether different fault subsets pass detection or not is determined under unbalanced satellite geometric distribution, the integrity target under each satellite fault hypothesis is established, and the integrity risk caused by fault missing detection is reduced by taking the minimum integrity risk as the target.

Description

Technical field [0001] The invention relates to the technical field of aviation surveillance, and in particular to a method and equipment for optimizing the autonomous integrity monitoring and protection level of an advanced receiver. Background technique [0002] As the Global Navigation Satellite System (GNSS) is widely used all over the world, users have put forward higher and higher requirements for the safety and integrity of GNSS navigation. In precision navigation technology (Required Navigation Performance, RNP) In the performance indicators of ), integrity is directly related to aviation safety. Integrity refers to the ability of the system to promptly alert users when the navigation error exceeds the upper limit allowed for safe operation. GNSS navigation signal is a modulated wave that GNSS broadcasts to users for navigation and positioning. The signal is affected by various factors in the propagation process and causes errors, such as satellite star clock error, satel...

Claims

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Application Information

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IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 薛瑞赵勇
Owner BEIHANG UNIV
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