JPS6449439A - Transmitter/receiver for space station - Google Patents
Transmitter/receiver for space stationInfo
- Publication number
- JPS6449439A JPS6449439A JP20518387A JP20518387A JPS6449439A JP S6449439 A JPS6449439 A JP S6449439A JP 20518387 A JP20518387 A JP 20518387A JP 20518387 A JP20518387 A JP 20518387A JP S6449439 A JPS6449439 A JP S6449439A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- transmitter
- switch
- reception power
- receiver
- 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
Landscapes
- Radio Relay Systems (AREA)
- Radio Transmission System (AREA)
Abstract
PURPOSE:To always perform communication in the optimum line state, by switching and connecting a transmitter to an antenna with a high reception level in plural antennas by a switch change-over signal. CONSTITUTION:When a part of signals received by receivers 5 and 6 via the antennas 1 and 2 is outputted to a switch controller 7 as reception power monitor signals S1 and S2, the controller 7 compares the reception power monitor signals of the receivers 5 and 6 with each other. And it generates the switch change-over signal S3 to control a switch 9 so as to the transmission signal of the transmitter 8 to an antenna system to which the receiver with high reception power is connected. In such a way, the switch 9 connects the transmitter 8 to the diplexer 3 or 4 of the antenna 1 or 2 with the high reception power, and the signal is transmitted via the antenna 1 or 2. Thereby, a space station side can select the optimum antenna automatically without necessitating a command from a ground station.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20518387A JPS6449439A (en) | 1987-08-20 | 1987-08-20 | Transmitter/receiver for space station |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20518387A JPS6449439A (en) | 1987-08-20 | 1987-08-20 | Transmitter/receiver for space station |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6449439A true JPS6449439A (en) | 1989-02-23 |
Family
ID=16502787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20518387A Pending JPS6449439A (en) | 1987-08-20 | 1987-08-20 | Transmitter/receiver for space station |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6449439A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02250435A (en) * | 1989-03-23 | 1990-10-08 | Nippondenso Co Ltd | On-vehicle communication equipment |
JPH0730470A (en) * | 1993-07-14 | 1995-01-31 | Nec Corp | Antenna switching system for artificial sattelite |
JPH09222472A (en) * | 1996-02-16 | 1997-08-26 | Nec Corp | Controller for pilotless aircraft |
-
1987
- 1987-08-20 JP JP20518387A patent/JPS6449439A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02250435A (en) * | 1989-03-23 | 1990-10-08 | Nippondenso Co Ltd | On-vehicle communication equipment |
JPH0730470A (en) * | 1993-07-14 | 1995-01-31 | Nec Corp | Antenna switching system for artificial sattelite |
JPH09222472A (en) * | 1996-02-16 | 1997-08-26 | Nec Corp | Controller for pilotless aircraft |
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