Method for detecting a shield in predicting radio wave...

Details Method for detecting a shield in predicting radio wave... Method for detecting a shield in predicting radio wave...

2005-07-26

2005-07-26

Appiah, Charles (Department: 2686)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C703S002000, C703S013000, C455S067160

Reexamination Certificate

active

06922563

ABSTRACT:
An object of the present invention is to provide a method for detecting a shield in predicting the radio wave propagation characteristics by a technique of the geometrical optics capable of detecting a content which a ray strikes, at high rate, when the ray is radiated within the observation space. In the case where the rays and the contents are given, the projected objects given by the line or plane are set up, and if an image of the content projected onto the projected object and an image of the ray projected onto the projected object do not intersect, the content is excluded from the shield detection object. A plurality of projected objects i (i=1 to M) are prepared, the selection of shield detection object is performed for each projected object i in order for i=1 to M, and the content of the shield detection object is concluded in sequence. Though the conventional method required the multiple variable equations to be solved for all the contents within the observation area, this invention allows the multiple variable equations to be solved only for the concluded contents of the shield detection object. Hence, the processing time can be shortened.

REFERENCES:
patent: 5301127 (1994-04-01), Hitney
patent: 5623429 (1997-04-01), Fortune et al.
patent: 6499006 (2002-12-01), Rappaport et al.
patent: 9-33584 (1997-02-01), None

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