[특허]Remote identification device

[미국특허] Remote identification device 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-013/78
출원번호	US-0703236 (1985-02-19)
우선권정보	CA-0448362 (1984-02-27)
발명자 / 주소	Sewards Alan (Kanata CAX)
출원인 / 주소	Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence (Ottawa CAX 07)
인용정보	피인용 횟수 : 11 인용 특허 : 5

초록 ▼

The conventional way of achieving an identification, friend or foe (IFF) function for a moveable subject requires the subject to carry a transponder that emits a coded return when a radar pulse is received by its receiver. In the present invention, an IFF system is disclosed which departs from the conventional transponder method and employs no radio-frequency power source. Instead, it uses the scattering or reflecting properties of an antenna to modulate, in a distinctive manner, the radar return from a moveable subject. A binary sequence code generator modulates the impedance of a receiver antenna, with the reflected signal being detected and correlated with a synchronized code sequence at the radar.

대표청구항 ▼

An apparatus for distinguishing a moveable subject from a group of moveable subjects, comprising: transmitting means for transmitting electromagnetic signals towards a remote area where the moveable subject to be identified is located, said transmitting means including a local receiving means; remote receiving means for receiving said electromagnetic signals at said moveable subject to be identified, said moveable subject including an antenna; impedance varying means including means for generating a remote predetermined binary sequence code for varying the terminating impedance of said antenna on said moveable subject wherein the scattering cross-section of said antenna to an incoming signal is a function of the match of the antenna to that signal such that a scattered reflected signal is produced, said reflected signal being modulated by variations of said impedance, said local receiving means receiving said reflected signal; means for generating a local binary sequence code identical with said remote binary sequence code; detecting means for detecting said reflected modulating signal at said local receiving means, said detecting means including means for cross-correlating said reflected signal modulated by said remote binary sequence code with said local binary sequence code, said cross-correlating means including an invert-noninvert switch receiving an input signal from said transmitting means and from said local binary sequence code generator, an integrator coupled to said switch, an amplifier coupled to said integrator, and a threshold detector coupled to said amplifier; a sample circuit coupled to said threshold detector providing an indication of the presence or non-presence of said remote binary sequence code; and means for synchronizing said reflected and local coded signals.

이 특허에 인용된 특허 (5) 인용/피인용 타임라인 분석

McGeoch Ian L. M. (Southerns ; Castle Hedingham Halstead ; Essex GB2) Stawell William B. (The Warren ; Chalfont Rd. Beaconsfield ; Buckinghamshire GB2), Method and apparatus for identifying radar targets.
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Denne ; Phillip Raymond Michael ; Davies ; David Evan Naunton ; McEwe n ; Colin Dougal, Passive transponder apparatus for use in an interrogator-responder system.
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Pike Lawrence W. (Salt Lake City UT) Zscheile ; Jr. John W. (Farmington UT) Spencer Billie M. (Bountiful UT), Quasi coherent two-way ranging apparatus.
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Moore Alan R. (Fareham GB2) Waterworth John (Fareham GB2), Radar transponders.
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Cleeton Claud E. (Washington DC), Radio frequency coding system.
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이 특허를 인용한 특허 (11) 인용/피인용 타임라인 분석

Dubois Jacques,CAX ; La Rochelle Sophie,CAX, Active cooperative tuned identification friend or foe (ACTIFF).
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Perrin Jacques (Montigny-Le-Bretonneux FRX) Sinaud Pascal (Wissous FRX), Method and device for the display of targets and/or target positions using data acquisition means of a weapons system.
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Chang,Shoude; Zhou,Ming, Object identification using quantum dots fluorescence allocated on Fraunhofer solar spectral lines.
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Carbonneau Raymond (Gloucester CAX) Dubois Jacques (Neufchatel CAX) Gravel Maurice (Ste-Foy CAX), Optical identification friend-or-foe.
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Ayasli Yalcin ; Katzin Peter, Post launch on-board identification friend or foe system.
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Kawakami Youichi (Hyogo JPX), Radar transponder.
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Dubois Jacques (Neufchatel CAX) LaRochelle Sophie (Cap-Rouge CAX), Selective wavelength identification friend or foe (SWIFF).
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Mostov, Kirill; Liptsen, Kfim, System and method for detecting dangerous objects and substances.
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Mostov, Kirill, System and method for space control and remote monitoring.
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Mostov, Kirill, Transportation security system and associated methods.
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Tolle, James P, Wearable, non-visible identification device for friendly force identification and intruder detection.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Remote identification device 원문보기