Non-line-of-sight communication positioning error elimination method and device based on singular spectrum analysis

Abstract

The invention provides a non-line-of-sight communication location error elimination method and device based on singular spectrum analysis. The error elimination method comprises the following steps: acquiring a one-dimensional non-line-of-sight communication observation value sequence; reconstructing the one-dimensional non-line-of-sight communication observation value sequence into a multi-dimensional track matrix; carrying out singular value decomposition on the obtained track matrix, so that component matrixes of the track matrix are obtained; selecting the component matrixes of the track matrix, and removing the component matrixes containing a non-line-of-sight error; recombining the component matrixes with the errors removed, so that a reconstruction matrix is obtained; and carrying out reverse Hankel matrix transformation on the reconstruction matrix, so that the one-dimensional non-line-of-sight communication observation value sequence with the errors removed is obtained. The technical scheme provided by the invention adopts a singular spectrum analysis method for eliminating the errors in non-line-of-sight communication location, and an error model does not need to be builtin an error eliminating process, so that workload can be reduced, and the problem of heavy workload is solved.

Description

technical field [0001] The invention belongs to the technical field of non-communication positioning error elimination, and in particular relates to a non-line-of-sight communication positioning error elimination method and device based on singular spectrum analysis. Background technique [0002] Wireless signal coverage is always limited by geographical environment, air loss, link budget and other conditions. In the case of obstacles, wireless signals can only reach the receiving end through reflection, scattering and diffraction, which we call non-line-of-sight communication. In the process of non-line-of-sight communication, wireless signals are received through multiple channels, and multipath effects will cause a series of problems such as delay synchronization, signal attenuation, polarization change, and link instability. The uncertainty of the propagation path in the non-line-of-sight communication process is the main cause of wireless positioning errors, and non-li...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a non-line-of-sight communication positioning error elimination method and device based on singular spectrum analysis, which is used to solve the problem of heavy workload caused by building a model when eliminating non-line-of-sight communication positioning errors in the prior art

Images