JPS6468676A - Phase variation correction system for automatic antenna tracking - Google Patents
Phase variation correction system for automatic antenna trackingInfo
- Publication number
- JPS6468676A JPS6468676A JP62226043A JP22604387A JPS6468676A JP S6468676 A JPS6468676 A JP S6468676A JP 62226043 A JP62226043 A JP 62226043A JP 22604387 A JP22604387 A JP 22604387A JP S6468676 A JPS6468676 A JP S6468676A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- difference
- sum
- reception
- calibrating
- 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
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE:To correct the phase variation between a sum and a difference channels even during signal reception by generating a calibrating signal of frequency outside a reception band in addition to a signal of reception center frequency. CONSTITUTION:A calibrating signal generator 15 selects and inputs a local signal f1 for reception center frequency generation when a preliminary check is performed and inputs a local signal f2 for reception out-band signal generation when data from an air frame is received, thereby generating calibrating signals respectively. Those calibrating signals are sent out to the difference and sum channels through a divider 14 and difference/sum channel directional couplers 1 and 7. Then the sum and difference channels, the tracking system composed of an automatic antenna tracking receiver 6, and a data demodulation system are checked with the signal f1. A sum/difference channel phase difference detector 12 detects a phase difference with the signal f2 and then difference/sum channel band-pass filters 5 and 1 perform sufficient attenuation. Therefore, the correction is performed in real time without exerting any influence upon the characteristics of the receiver 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62226043A JPS6468676A (en) | 1987-09-08 | 1987-09-08 | Phase variation correction system for automatic antenna tracking |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62226043A JPS6468676A (en) | 1987-09-08 | 1987-09-08 | Phase variation correction system for automatic antenna tracking |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6468676A true JPS6468676A (en) | 1989-03-14 |
Family
ID=16838888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62226043A Pending JPS6468676A (en) | 1987-09-08 | 1987-09-08 | Phase variation correction system for automatic antenna tracking |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6468676A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005337765A (en) * | 2004-05-25 | 2005-12-08 | Nec Engineering Ltd | Monopulse tracking system |
CN109964148A (en) * | 2016-11-17 | 2019-07-02 | 特里纳米克斯股份有限公司 | Detector at least one object of optical detection |
-
1987
- 1987-09-08 JP JP62226043A patent/JPS6468676A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005337765A (en) * | 2004-05-25 | 2005-12-08 | Nec Engineering Ltd | Monopulse tracking system |
CN109964148A (en) * | 2016-11-17 | 2019-07-02 | 特里纳米克斯股份有限公司 | Detector at least one object of optical detection |
CN109964148B (en) * | 2016-11-17 | 2023-08-01 | 特里纳米克斯股份有限公司 | Detector for optically detecting at least one object |
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