[특허]Method and apparatus for passive airborne collision avoidance and navigation

[미국특허] Method and apparatus for passive airborne collision avoidance and navigation 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-001/24
출원번호	US-0769701 (1985-08-27)
발명자 / 주소	Flax Bennett (1001 Playford La. Silver Spring MD 20901)
인용정보	피인용 횟수 : 51 인용 특허 : 9

초록 ▼

A passive method for an aircraft to use its on-board locating apparatus to monitor interrogation signals and ISLS signals transmitted by at least one secondary surveillance radar, and coded reply signals transmitted by at least one fixed ground transponder; to match said transponder reply signals with said ISLS signals, in order to associate said transponder reply signals with interrogations from said radar; to repetitiously compute said aircraft\s instantaneous position in space, said computations being based on hyperbolic and linear functions related to said aircraft, said radar, and said associated fixed transponder; and to display said positions for navigational purposes. Furthermore, having said computations, said passive method uses said locating apparatus to monitor coded reply signals from transponders of other aircraft; to match said other-aircraft reply signals with said ISLS signals to determine which other-aircraft transponder reply signals are associated with interrogations from said radar; to repetitiously compute the instantaneous positions of other aircraft in space, said computations being based on elliptic and linear functions related to said locating apparatus\own aircraft, said other aircraft, and said radar; and to display said positions for collision-avoidance purposes.

대표청구항 ▼

A method of passively determining in own aircraft the position of said own aircraft by utilizing differences between times of arrival at said own aircraft of Improved Sidelobe Suppression (ISLS) pulse pairs transmitted from a Secondary Surveillance Radar (SSR) and trains of reply pulses (replies) transmitted by a fixed secondary-radar transponder in response to mode A and mode C interrogation pulse pairs (interrogations) transmitted by said SSR, and for passively determining the position of any proximate transponder-equipped other aircraft by utilizing said determined position of said own aircraft and differences between times of arrival at said own aircraft of said ISLS pulse pairs and replies transmitted by said other aircraft\s airborne transponder in response to said interrogations, comprising the steps of: prestoring location data for said SSR and for said fixed transponder, and prestoring signal data identifying said fixed transponder\s mode A reply; determining times of arrival at said own aircraft of leading edges of said ISLS and interrogation pulse pairs; determining times of arrival at own aircraft of leading edges of said replies by said fixed transponder and by said other-aircraft transponder; determining said own aircraft\s altitude; determining said other aircraft\s altitude from said other-aircraft-transponder replies to said mode C interrogations; calculating the position of said own aircraft utilizing said own aircraft\s altitude, said times of arrival of said interrogation pulses, said times of arrival of said leading edges of said ISLS pulses and said replies from said fixed transponder, and said prestored location and signal data; and calculating the position of said other aircraft utilizing said other aircraft\s altitude, said calculated position of said own aircraft, said times of arrival of said leading edges of said ISLS pulses and said replies by said other aircraft transponder, and said prestored location and signal data; and indicating said calculated position of said own aircraft for navigational purposes, and indicating said calculated positions of said own aircraft and said other aircraft for collision-avoidance purposes.

이 특허에 인용된 특허 (9) 인용/피인용 타임라인 분석

Meyer Donald H. (Cedar Rapids IA), Accurate DME-based airborne navigation system.
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Hulland Burton L. (Glenwood Landing NY) Litchford George B. (Northport NY), Collision avoidance system.
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Baldwin Edwin L. (Oakwood Garden Apts. So. ; Apt. Z-204 & 60 Saratoga Ave. San Jose CA 95129), Collision avoidance warning system.
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Litchford George B. (Northport NY), Collision avoidance/proximity warning system using secondary radar.
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McComas ; Arthur D., Means for accumulating aircraft position data for a beacon based collision avoidance system and other purposes.
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Nelson David A. (Cedar Rapids IA), Multichannel DME ranging system.
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Litchford ; George B., Passive ATCRBS using signals of remote SSR.
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Litchford George B. (Northport NY), Proximity indication with means for computing the distance from an own station to an interrogating secondary surveillanc.
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Funatsu Chuhei (Yokohama JPX) Hirata Toshikiyo (Samukawa JPX), Surveillance system for collision avoidance of aircrafts using radar beacon.
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James A. Frazier ; Kenneth R. Jongsma ; James T. Sturdy, Close/intra-formation positioning collision avoidance system and method.
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Smith, Alexander E.; Cohen, Bennett, Correlation of flight track data with other data sources.
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Smith, Alexander E.; Cohen, Bennett, Correlation of flight track data with other data sources.
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Smith,Alexander E.; Cohen,Bennett, Correlation of flight track data with other data sources.
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Smith,Alexander E.; Cohen,Bennett, Correlation of flight track data with other data sources.
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Smith, Alexander E., Deployable intelligence and tracking system for homeland security and search and rescue.
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Smith, Alexander E.; Hulstrom, Russell; Evers, Carl A., Deployable passive broadband aircraft tracking.
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Smith, Alexander E., Enhanced passive coherent location techniques to track and identify UAVs, UCAVs, MAVs, and other objects.
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Breen, Thomas J.; Smith, Alexander E.; Rossano, Christopher F., Extension of aircraft tracking and positive identification from movement areas into non-movement areas.
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Smith, Alexander E.; Hulstrom, Russell; Evers, Carl A.; Breen, Thomas J., Method and apparatus for ADS-B validation, active and passive multilateration, and elliptical surviellance.
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Alexander E. Smith ; Bennett Cohen ; Carl Evers, Method and apparatus for correlating flight identification data with secondary surveillance radar data.
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Curtis Michael H. ; Reeves Kenneth C. ; Stelling Desi D., Method and apparatus for improving performance of aircraft display utilizing TCAS computer and mode S transponder.
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Smith,Alexander E., Method and apparatus to correlate aircraft flight tracks and events with relevant airport operations information.
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Steve Horvath ; Robert M. Grove ; John T. Pratt, Method and system for displaying target icons correlated to target data integrity.
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Evers,Carl A.; Xie,Yue; Breen,Thomas J., Method and system for elliptical-based surveillance.
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Roze, Thierry; Trin, Jean-Marc, Method and system for localizing a target in an interrogation-response system.
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Schiefele Jens,DEX ; Schulze Richard,DEX ; Viebahn Harro von,DEX, Method of detecting a collision risk and preventing air collisions.
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[미국특허] Method and apparatus for passive airborne collision avoidance and navigation 원문보기