Title:
METHOD FOR PREPARATION OF OPTICAL RANGE IN UPPER HIGH ACCORDING TO SPOT
Document Type and Number:
Japanese Patent JP2963994
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for efficiently deciding an optical range between a space and a ground surface.
SOLUTION: The method for preparing an optical range in the upper high according to a spot comprises the steps of recording positions of navigation satellites 3 in the upper-high as seen from a present spot of a land moving body 4 and signal intensities from the respective satellites 3 at 0 degree or more of an angle of elevation for trying to capture a radio wave in the case of using a navigation satellite system by the body together with a position and a time of the body 4, and deciding whether various infinitesimal areas segmented from the upper high of respective spots are in sight or shielded from radio wave intensity information recorded in a certain time, thereby deciding the optical range in the upper high at the spot in the time.
More Like This:
| JP2002071777 | METHOD AND SYSTEM FOR SPECIFICATION OF POSITION OF RADIO EMISSION SOURCE |
| WO/2012/117147 | OVER-THE-AIR TEST |
| JP2010054339 | DEVICE AND METHOD FOR DETECTING RADIO WAVE |
Inventors:
Takahashi, Masato
Application Number:
JP1998000264038
Publication Date:
August 13, 1999
Filing Date:
September 02, 1998
Export Citation:
Assignee:
COMMUNICATION RESEARCH LABORATORY MPT
International Classes:
G01R29/08; G01S19/05; G01S19/28; (IPC1-7): G01S5/14; G01R29/08