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Weighted receiving-based simple matching type ray launching method

A ray transmitting and receiving antenna technology, applied in the field of simple matching ray transmitting, can solve the problem of repeated calculation of field strength, and achieve the effect of high accuracy of field strength prediction

Active Publication Date: 2017-02-15
TIANJIN UNIV
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  • Claims
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Problems solved by technology

However, it is worth noting the double calculation of the field strength caused by receiving the ball during its receiving process

Method used

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  • Weighted receiving-based simple matching type ray launching method
  • Weighted receiving-based simple matching type ray launching method
  • Weighted receiving-based simple matching type ray launching method

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Embodiment Construction

[0023] Aiming at the above-mentioned problems in the existing prediction model, the improved model of the present invention uses a ray tubular body to represent a multipath component (uniform distribution of power in the tubular body), and completes direct and reflected paths with traditional Ray Launching path search algorithms. Search, the improvement is that the method of weighted reception is introduced to deal with the process of using the receiving sphere to filter the path near the receiving antenna. This method is to carry out weighted reception on the power carried by each effective ray, and the weight is the ratio of the intersection area of ​​the tubular body representing the ray and the great circle of the receiving sphere to the cross-sectional area of ​​the tubular body.

[0024] In this paper, a ray tube is used to represent a multipath component. The geometric distribution of rays near the transmitting antenna Tx is shown as figure 1 As shown, the horizontal a...

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Abstract

The invention belongs to the field of field intensity prediction, provides a novel simple matching type ray launching method, a receiving field calculation part is improved, the field intensity repetitive computation problem is avoided, and the field intensity prediction precision of a prediction model is finally improved. To this end, the technical scheme adopted by the invention is as follows: the weighted receiving-based simple matching type ray launching method utilizes a ray tubular body represents a multipath component, power is in uniform distribution in the tubular body, a path search algorithm of Ray Launching is utilized to complete search of a perpendicular incidence and reflection paths, a weighted receiving method is utilized to handle the process of using a receiving ball to screen a path in the vicinity of a receiving antenna, specifically weighted receiving is performed on the power carried by each effective ray, and a weight is a ratio of the intersection area of the tubular body that represents the ray and a great circle of the receiving ball to the cross sectional area of the tubular body. The weighted receiving-based simple matching type ray launching method provided by the invention is mainly applied to field intensity prediction.

Description

technical field [0001] The invention belongs to the field of field strength prediction, in particular, relates to a weighted reception-based simple matching ray emission method. Background technique [0002] Simple matching ray launching method (Ray Launching) is a typical forward ray tracing method. The RayLaunching method uses rays to represent the path, launches rays from the source point to the whole space at equal angular intervals (small enough), then tracks and calculates the geometric path of each ray and its corresponding field strength information, and finally uses each effective path at the receiving antenna The vector sum of the field strength of is used as the total receiving field strength. This method generally uses the receiving sphere to screen the path in advance. If the ray intersects with the receiving sphere, the path is determined to be valid. [0003] Ray Launching has the advantages of simple algorithm, strong scene applicability, and the number of r...

Claims

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Application Information

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IPC IPC(8): H04B17/391
CPCH04B17/391H04B17/3912H04B17/3913
Inventor 任叶童杨晋生
Owner TIANJIN UNIV
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