L5 signal capture method and apparatus, and computer storage medium

A signal acquisition and computer program technology, applied in the field of satellite navigation, can solve problems such as low acquisition sensitivity, and achieve the effects of high sensitivity, improved acquisition sensitivity, and improved efficiency

Active Publication Date: 2019-04-05
西安开阳微电子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides an L5 signal capture method, device and computer storage medium to at least solve the problem of low capture sensitivity of existing capture methods, which can quickly capture L5 signals, and is simple and easy to implement with high sensitivity

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  • L5 signal capture method and apparatus, and computer storage medium
  • L5 signal capture method and apparatus, and computer storage medium
  • L5 signal capture method and apparatus, and computer storage medium

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] In order to understand the solution of the embodiment of the present invention more clearly, first, the structure of the L5 signal is briefly introduced as follows:

[0030] The L5 signal adopts a new signal structure, which is composed of two synchronous components with equal amplitude and orthogonal to each other, one of which is called a data channel, carrying navigation information, and the other is called a pilot component, without navigation inform...

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Abstract

The invention belongs to the technical field of satellite navigation, and discloses an L5 signal capture method and apparatus, and a computer storage medium. The method comprises the following steps:capturing Doppler frequency and a code phase of an L1 signal sent by a current satellite, and performing bit synchronization on the basis of the result, and determining a code phase search range of the L5 signal according to the bit synchronization result, so that the L5 signal can be captured and searched within a relatively small code phase search range. By adoption of the L5 signal capture method and apparatus disclosed by the invention, the problem of low capture sensitivity of the existing capture method can be solved, the L5 signal can be captured quickly, and the L5 signal capture method and apparatus are simple and feasible, and are relatively high in sensitivity.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to an L5 signal acquisition method, device and computer storage medium. Background technique [0002] The Global Positioning System (GPS, Global Positioning System) is a global positioning system established by the United States. It uses GPS positioning satellites to provide users with satellite navigation and positioning services around the clock. It is also the most widely used global positioning system at present. [0003] With the development of the global positioning system, the capture and tracking of new system signals has increasingly become the focus of the signal field. The L5 signal is a satellite navigation signal with a new structure adopted after the modernization of GPS. Compared with the old system signal L1 signal, the structure of the L5 signal is completely different. The L5 signal is composed of two components with equal amplitude and quadrature pha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/30G01S19/29
CPCG01S19/29G01S19/30Y02D30/70
Inventor 董婷婷张柏华朱盈娜
Owner 西安开阳微电子有限公司
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