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Monitoring method of GBAS (Ground Based Augmentation System) ionospheric spatial gradient based on pseudolite

A space gradient and pseudolite technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc., can solve the problems of mutual influence of monitoring results and high complexity of monitoring algorithms, so as to improve monitoring accuracy, eliminate Mutual interference effect

Active Publication Date: 2019-04-05
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

[0008] The purpose of the present invention is to propose a monitoring method of ionospheric spatial gradient based on pseudolites in order to overcome the existing GBAS ionospheric storm monitoring algorithm different satellite ionospheric gradient monitoring results mutual influence, monitoring algorithm complexity is high

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  • Monitoring method of GBAS (Ground Based Augmentation System) ionospheric spatial gradient based on pseudolite
  • Monitoring method of GBAS (Ground Based Augmentation System) ionospheric spatial gradient based on pseudolite
  • Monitoring method of GBAS (Ground Based Augmentation System) ionospheric spatial gradient based on pseudolite

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[0034] In order to better illustrate the purpose and advantages of the present invention, below in conjunction with the attached Figure 1-2 And embodiment technical scheme of the present invention is described further. In this specific implementation manner, a typical GBAS system enhanced by a pseudolite will be used as an example for description. The monitoring equipment in the present invention includes: 1 set of pseudolites and no less than 3 reference receivers. Schematic such as figure 1 shown;

[0035] For the convenience of describing the algorithm, the scale of the problem is further reduced, such as figure 2 Four reference stations are deployed. In this paper, it is assumed that the frequency point is GPS L1, and the four monitoring receivers are distributed in a square with a side length of 150m. That is, receiver No. 2 is located 150m east of receiver No. 1, and receiver No. No. 1 receiver is 150m due north, No. 4 receiver is located 150m due east of No. 3 rec...

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Abstract

The invention discloses a monitoring method of a GBAS (Ground Based Augmentation System) ionospheric spatial gradient based on a pseudolite, and is mainly used in the field of GBAS ionospheric storm monitoring and relevant application. The pseudolite observed quantity is introduced into a monitoring algorithm; the problems that the ionospheric gradient monitoring results of different satellites ofthe existing BGAS ionospheric storm monitoring algorithm are mutually influenced, the complexity of a fault isolation algorithm is high, and the like are solved; the single-satellite ionospheric storm isolation monitoring is realized; and meanwhile, GBAS monitoring stations are provided. The monitoring method has the characteristics that the monitoring accuracy is high; and the realization is flexible and simple.

Description

technical field [0001] The invention relates to a monitoring method of GBAS ionospheric space gradient based on pseudolite, and belongs to the technical field of integrity monitoring in satellite navigation. Background technique [0002] GBAS can support the full-stage permission requirements of military and civil aviation aircraft for precision approach, landing, departure, and surface surveillance. Compared with traditional land-based instrument landing systems, it can support curved operations, low site requirements, and a single system can meet multiple runways. The characteristics of high precision, high efficiency and low cost are the development needs of future airport navigation equipment. GBAS mainly uses multiple monitoring receivers distributed on the ground to collect the original observation data in real time and send them to the ground information processing equipment. The ground information processing equipment receives and processes the difference and integri...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/27G01S19/29
CPCG01S19/27G01S19/29
Inventor 赵精博任鸿飞王垚郝硕邢兆栋王振华惠沈盈
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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