Indoor pseudo-satellite signal multipath microscopic parameter analysis system based on statistical model

A statistical model and parameter analysis technology, applied in the field of indoor pseudolite system signal analysis, can solve problems such as the relationship between the geometric shapes of transceiver equipment without considering the building layout

Inactive Publication Date: 2019-10-25
SOUTHEAST UNIV
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Problems solved by technology

Aiming at the deterministic relationship between received power, penetration loss and entry loss caused by indoor multipath propagation, Jost T et al. proposed an entry loss model, which solved the problem that building layout and transceiver equipment were not considered in the standard penetration loss model. Problems with Interrelationships of Geometric Shapes

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  • Indoor pseudo-satellite signal multipath microscopic parameter analysis system based on statistical model
  • Indoor pseudo-satellite signal multipath microscopic parameter analysis system based on statistical model
  • Indoor pseudo-satellite signal multipath microscopic parameter analysis system based on statistical model

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Embodiment Construction

[0054] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0055] Such as figure 1 , an indoor pseudolite signal multipath microparameter analysis system based on a statistical model provided by an embodiment of the present invention mainly includes a deterministic modeling part and a data derivation and statistical analysis module, wherein the deterministic modeling part includes an indoor structured scene The modeling module, the multipath signal tracking module and the multipath signal extraction module are as follows:

[0056] The indoor structured scene modeling module is used for three-dimensional scene modeling with the office area as the target research environment, and the layout of pseudolite launch devices and pseudolite data collection points. include:

[0057] 3D scene modeling unit: Use Wireless Insite to model the 3D scene in the office area. The office area is an environment prone to...

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Abstract

The invention discloses an indoor pseudo-satellite signal multipath microscopic parameter analysis system based on a statistical model. A software system comprises an indoor structured scene modelingmodule, which is used for carrying out three-dimensional scene modeling with an office area as a target research environment, and is provided with a pseudo-satellite launcher and a pseudo-satellite data collection point; a multipath signal tracking module for carrying out multi-path signal tracking by adopting an image method; a multipath signal extraction module used for extracting multipath signals based on time and power judgment; and a data derivation and statistics analysis module used for matching a deterministic model obtained by inductive statistics with a theoretical model, and verifying the correctness of a multipath microcosmic parameter theoretical model suitable for a pseudo-satellite signal system. Based on the system disclosed by the invention, channel characteristics of pseudo-satellite multipath of a multipath delay extended model, a multipath power delay model and the like in indoor environments can be revealed, and the design of a pseudo-satellite receiver and a simulator is facilitated.

Description

technical field [0001] The invention relates to a software system, in particular to an indoor pseudo-satellite signal multipath micro-parameter analysis system based on a statistical model, and belongs to the field of indoor pseudo-satellite system signal analysis. Background technique [0002] As a ground signal transmitter that can send signals similar to orbiting satellites, pseudolites can be applied to indoor independent network positioning, but indoor complex building structures and changing actual environments make it difficult to apply pseudolites to indoor positioning. As one of the main factors affecting the positioning accuracy of pseudolites, multipath effect cannot be eliminated by differential technology due to strong regional and time-varying characteristics. Therefore, the classic delay-locked loop tracking technology commonly used in modern commercial Poor performance in long-distance environments. Designing a suitable filtering algorithm based on the multi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/22G06F17/50
CPCG01S19/22G06F30/20
Inventor 潘树国王欣怡赵越夏炎高旺
Owner SOUTHEAST UNIV
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