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Method and device for simulating GNSS (Global Navigation Satellite System) multipath channel

A channel and reference channel technology, applied in the field of simulating GNSS multipath channels, can solve the problems of high computational complexity and large amount of computation for channel simulation

Active Publication Date: 2021-08-13
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For this reason, the present invention proposes a method and device for simulating a GNSS multipath channel, which can overcome the problems of high computational complexity and large amount of calculation in channel simulation in satellite navigation system testing and evaluation

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  • Method and device for simulating GNSS (Global Navigation Satellite System) multipath channel
  • Method and device for simulating GNSS (Global Navigation Satellite System) multipath channel

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Embodiment Construction

[0059] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0060] In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0061] refer to figure 2 , a method for simulating a GNSS channel, comprising the following steps:

[0062] S100. Configure model parameters of a reference channel model.

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Abstract

The invention discloses a method and a device for simulating a GNSS (Global Navigation Satellite System) multipath channel. The device comprises a model parameter configuration module, a spreading code generator, a performance standard module, a correlator, an adaptive learning module and a channel simulation filter. According to the method, a large number of multipath components generated by a reference GNSS channel model can be equivalently simplified, the real-time simulation calculation resource requirement is reduced, and through adoption of the least square estimation method combining multipath parameter clustering analysis in a power-delay space and a minimum signal time autocorrelation function error, characteristics of channel impact response data generated by the reference channel model on a correlation function domain are adaptively learned, and a multipath error simulation effect is kept consistent with the reference channel model.

Description

technical field [0001] The invention relates to the field of satellite navigation systems, in particular to a method and device for simulating a GNSS multipath channel. Background technique [0002] The design and optimization of global navigation satellite systems (GNSS) require realistic propagation models and computationally efficient simulation techniques. In recent years, channel models specially designed for GNSS applications have received high attention, because the simulation technology based on channel models is one of the key basic technologies to effectively improve the development of GNSS receivers. From the perspective of GNSS channel models, the most widely used ones are the land mobile multipath channel model described in Recommendation ITU-R P.681 developed based on channel sounding data and virtual city modeling methods, and the satellite-to-indoor channel model, etc. . Such channel models suitable for GNSS belong to broadband time-varying channel models, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/22H04B17/391G06K9/62
CPCG01S19/22H04B17/3912G06F18/23
Inventor 周顺欧钢唐小妹肖伟牟卫华吕志成倪少杰李柏渝
Owner NAT UNIV OF DEFENSE TECH
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