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Indoor ranging method of signal strength in the environment of multipath and other signal noise interference

A technology of signal noise and signal strength, applied in the field of indoor ranging based on signal strength, to achieve the effect of accurate ranging

Inactive Publication Date: 2016-08-03
THE THIRD RES INST OF MIN OF PUBLIC SECURITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims at the problems existing in the existing indoor target distance measurement method, and provides an indoor distance measurement method based on signal strength

Method used

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  • Indoor ranging method of signal strength in the environment of multipath and other signal noise interference
  • Indoor ranging method of signal strength in the environment of multipath and other signal noise interference
  • Indoor ranging method of signal strength in the environment of multipath and other signal noise interference

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Embodiment Construction

[0026] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0027] The indoor ranging method based on signal strength provided by the present invention can realize accurate ranging under multipath and other signal noise interference environments, and its specific implementation method is as follows:

[0028] A1. First arrange a ranging node, and then arrange a target node. The target node transmits electromagnetic waves to the ranging node, and the ranging node receives the electromagnetic waves.

[0029] A2. Establish an electromagnetic wave receiving model at the receiving end (that is, the ranging node). The electromagnetic wave model is as follows:

[0030] M LoS ( t ) = S ...

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Abstract

The invention discloses a signal-intensity indoor distance measuring method under multipath and other signal noise interference environments. The method comprises the following steps of firstly arranging a distance measuring node, then arranging a target node, sending electromagnetic waves from the target node to the distance measuring node, receiving the electromagnetic waves through the distance measuring node, utilizing signal intensities measured from different channels to establish an electromagnetic wave receiving model at the distance measuring node, finishing a receiving end electromagnetic field overlay model through a built perpendicular incidence path and a plurality of built reflection paths, and utilizing the DFT principle to solve the electromagnetic file overlay model to obtain the perpendicular incidence distance, the reflection coefficients and the reflection distance. The signal-intensity indoor distance measuring method under multipath and other signal noise interference environments can guarantee distance measuring accuracy, is low in hardware cost and is suitable for various application scenarios.

Description

technical field [0001] The invention relates to an indoor ranging technology, in particular to an indoor ranging method based on signal strength. Background technique [0002] With the development of target distance measurement technology, the target distance measurement has developed from the ancient tape measure to the current advanced laser ranging system. In practical applications, the accuracy of the laser ranging system has been less than 1cm. Therefore, advanced ranging technology plays an important role in many fields such as military, civil, aerospace and so on. However, laser ranging systems require the target to be aligned with the measuring instrument. However, in ranging requirements such as localization, the target is mostly moving. However, there are still technical problems in tracking and measuring the distance of one or more moving targets in the laser ranging system. At present, the methods for target distance measurement mainly include various methods...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/02
Inventor 刘云淮赵禹齐力胡传平
Owner THE THIRD RES INST OF MIN OF PUBLIC SECURITY