JPS6465472A - Satellite communication and position measurement system for moving body - Google Patents
Satellite communication and position measurement system for moving bodyInfo
- Publication number
- JPS6465472A JPS6465472A JP22158887A JP22158887A JPS6465472A JP S6465472 A JPS6465472 A JP S6465472A JP 22158887 A JP22158887 A JP 22158887A JP 22158887 A JP22158887 A JP 22158887A JP S6465472 A JPS6465472 A JP S6465472A
- Authority
- JP
- Japan
- Prior art keywords
- moving body
- satellites
- frequency
- parts
- processing part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE:To measure the position of an optional number of moving bodies instantaneously by utilizing M(M>=3) stationary satellites and using M kinds of frequencies for position measurement. CONSTITUTION:A base station 4 sends out three kinds of sent signals generated by a base station transmission and reception processing part 44 to high-frequency parts 42a-42c through modulation and demodulation parts 43a-43C at a common repetitive period. The high-frequency parts 42a-42c convert them into high-frequency signals of different prescribed frequencies to excite high- directivity antennas 41a-41c are sent out to the stationary satellites 1-3, and the signal repeated by the satellites 1-3 are sent to an optional moving body in broadcasting mode. Then the moving body 5 receives the radio waves from the satellites 1-3 by its antenna 51 and inputs them to a moving body reception processing part 55 through a high frequency part 52, a branching filter part 53, and demodulation parts 54a-54c. Then the processing part 55 extracts time information, etc., from the three regenerated signals, detects their mutual propagation time differences, and specifies the position by a trigonometric measuring method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22158887A JPS6465472A (en) | 1987-09-04 | 1987-09-04 | Satellite communication and position measurement system for moving body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22158887A JPS6465472A (en) | 1987-09-04 | 1987-09-04 | Satellite communication and position measurement system for moving body |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6465472A true JPS6465472A (en) | 1989-03-10 |
Family
ID=16769102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22158887A Pending JPS6465472A (en) | 1987-09-04 | 1987-09-04 | Satellite communication and position measurement system for moving body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6465472A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6909902B1 (en) | 1999-05-31 | 2005-06-21 | Fujitsu Limited | Radio base station equipment and mobile station equipment determining location of mobile station by associating with another radio base station or mobile station in a mobile communication system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54118789A (en) * | 1978-03-08 | 1979-09-14 | Fujitsu Ltd | Mobile object measurement system |
-
1987
- 1987-09-04 JP JP22158887A patent/JPS6465472A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54118789A (en) * | 1978-03-08 | 1979-09-14 | Fujitsu Ltd | Mobile object measurement system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6909902B1 (en) | 1999-05-31 | 2005-06-21 | Fujitsu Limited | Radio base station equipment and mobile station equipment determining location of mobile station by associating with another radio base station or mobile station in a mobile communication system |
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