JPS6459093A - Transponder for airframe distance measurement - Google Patents

Transponder for airframe distance measurement

Info

Publication number
JPS6459093A
JPS6459093A JP21614587A JP21614587A JPS6459093A JP S6459093 A JPS6459093 A JP S6459093A JP 21614587 A JP21614587 A JP 21614587A JP 21614587 A JP21614587 A JP 21614587A JP S6459093 A JPS6459093 A JP S6459093A
Authority
JP
Japan
Prior art keywords
signal
decometer
encoder
output
sent
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
JP21614587A
Other languages
Japanese (ja)
Inventor
Tomoaki Torii
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 JP21614587A priority Critical patent/JPS6459093A/en
Publication of JPS6459093A publication Critical patent/JPS6459093A/en
Pending legal-status Critical Current

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  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To select the frequency of a range tone freely by extracting frame synchronizing pulses from a decometer, performing the frame synchronization of a PCM encoder, and inserting a signal for analog distance measurement to be sent into a word. CONSTITUTION:A signal received by a receiving antenna 1 is demodulated and amplified by a receiver 2 and sent to the decometer 4. The decometer 4 extracts a frame synchronizing signal B from the output signal (a) of the receiver 2. The signal is used for the frame synchronization of the PCM encoder 8 for telemetry. The decometer 4 separates a guidance control signal R from the received signal and outputs it. Telemetry data S is inputted to the encoder 8. The encoder 8 sends its output to a switch circuit 10. A word pulse C is outputted to the circuit 10. The output of the circuit 10 is modulated by a transmitter 11 and sent back to the ground through a transmitting antenna 12. Consequently, the frequency of a range toner is selected freely.
JP21614587A 1987-08-29 1987-08-29 Transponder for airframe distance measurement Pending JPS6459093A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21614587A JPS6459093A (en) 1987-08-29 1987-08-29 Transponder for airframe distance measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21614587A JPS6459093A (en) 1987-08-29 1987-08-29 Transponder for airframe distance measurement

Publications (1)

Publication Number Publication Date
JPS6459093A true JPS6459093A (en) 1989-03-06

Family

ID=16683981

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21614587A Pending JPS6459093A (en) 1987-08-29 1987-08-29 Transponder for airframe distance measurement

Country Status (1)

Country Link
JP (1) JPS6459093A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0961518A (en) * 1995-08-23 1997-03-07 Nec Corp Secondary radar apparatus
JP2022504763A (en) * 2018-10-12 2022-01-13 デンソー インターナショナル アメリカ インコーポレーテッド Passive entry / passive start access system that uses continuous wave tones and syncwords to detect range extender relay station attacks

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0961518A (en) * 1995-08-23 1997-03-07 Nec Corp Secondary radar apparatus
JP2022504763A (en) * 2018-10-12 2022-01-13 デンソー インターナショナル アメリカ インコーポレーテッド Passive entry / passive start access system that uses continuous wave tones and syncwords to detect range extender relay station attacks

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