公开(公告)号：JP2000341191A

公开(公告)日：2000-12-08

申请号：JP14906199

申请日：1999-05-28

Applicant: NAT SPACE DEV AGENCY

Inventor： YAMAWAKI KOJI ,  KUSANAGI MICHIRO ,  OBA HIDEO ,  NISHIYAMA KENJI

IPC: B64G1/10 ,  H04B7/185

Abstract: PROBLEM TO BE SOLVED: To enable continuous communication in three specific areas on the earth and to enable continuous position measurement by always establishing a communication link for one satellite in three areas nearly directly below a remote point formed on the earth surface and enabling a communication between satellites above the areas. SOLUTION: A ground fixed station 203 sends and receives a control signal radio wave for communication line control to and from a satellite 201 above an area A. On satellites 201 and 202, repeaters which repeat and send radio waves from mobile stations to mobile stations and fixed stations are mounted. A satellite communication is made between the satellites 201 and 202, and a satellite above a 3rd area. Each satellite stays for about 6 hours within a range reaching a high latitude through an ascending node. Thus, three associative recursion type satellite groups have an ascending node latitude and an ascending node passing time of the heat satellites adjusted properly to constitute a hemisphere-limited type position measurement communication composite system which is capable of three-satellite position measurement.