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Beidou navigation signal vector tracking method based on incoherent discriminator

A Beidou navigation and signal vector technology, which is applied to instruments, measuring devices, radio wave measuring systems, etc., can solve problems such as inconsistency in update frequency

Active Publication Date: 2016-10-12
湖南中电星河电子有限公司
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Problems solved by technology

If the traditional vector tracking loop is used to process the B1I signal, it will face the problem of inconsistent update frequencies of the D1 message signal and the D2 message signal

Method used

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  • Beidou navigation signal vector tracking method based on incoherent discriminator
  • Beidou navigation signal vector tracking method based on incoherent discriminator
  • Beidou navigation signal vector tracking method based on incoherent discriminator

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Embodiment Construction

[0103] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0104] The embodiment of the present invention proposes a Beidou navigation signal vector tracking method based on a non-coherent discriminator, so that the vector tracking method can be used for receiving B1I signals, and by optimizing the update frequency of the vector tracking method, the accuracy of the vector tracking loop can be improved performance.

[0105] figure 1 A flow chart of a Beidou navigation signal vector tracking method based on a non-coherent discriminator of the present invention is provided, which includes the following steps:

[0106] Step 101, the navigation signal becomes a digi...

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Abstract

For the problems that in a conventional vector tracking method, loop update frequency depends on navigation message rate, so that a loop cannot be designed flexibly and cannot be directly used for receiving Beidou B1I signals, the invention provides a Beidou navigation signal vector tracking method based on an incoherent discriminator. By introducing the incoherent discriminator, flexible design of the vector tracking loop update frequency is realized. The method, by optimizing incoherent accumulation time of the incoherent discriminator, not only can eliminate the influence of navigation messages on vector tracking loop update rate, but also can improve the performance of the vector tracking loop.

Description

technical field [0001] The present invention relates to the field of navigation receiver equipment development, specifically a vector tracking loop design and parameter optimization method based on an incoherent discriminator for Beidou navigation signals, which can be used in navigation systems including Beidou satellite navigation systems The signal receiving terminal equipment is under development. Background technique [0002] With the continuous expansion of the application field of satellite navigation systems, traditional navigation receivers cannot better meet the needs of positioning and other services in complex environments such as weak signals. In order to improve the tracking sensitivity and tracking dynamics of the navigation receiver under weak signals, the Vector Tracking Loop (VTL: Vector Tracking Loop) has been extensively studied. Greatly shorten the time for recapturing when the signal is out of lock and improve the usability of the receiver. However, m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/37
CPCG01S19/37
Inventor 林红磊欧刚刘瀛翔陈华明李蓬蓬王勇吴鹏楼生强
Owner 湖南中电星河电子有限公司
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