JPS6468676A - Phase variation correction system for automatic antenna tracking - Google Patents

Phase variation correction system for automatic antenna tracking

Info

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
Application number
JP62226043A
Other languages
Japanese (ja)
Inventor
Tatsuo Haruno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62226043A priority Critical patent/JPS6468676A/en
Publication of JPS6468676A publication Critical patent/JPS6468676A/en
Pending legal-status Critical Current

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  • 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.
JP62226043A 1987-09-08 1987-09-08 Phase variation correction system for automatic antenna tracking Pending JPS6468676A (en)

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)

* Cited by examiner, † Cited by third party
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 for optical detection of at least one object

Cited By (3)

* Cited by examiner, † Cited by third party
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 for optical detection of at least one object
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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