[특허]Intensity area correlation addition to terrain radiometric area correlation

[미국특허] Intensity area correlation addition to terrain radiometric area correlation 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-013/86
출원번호	US-0388796 (1989-07-21)
발명자 / 주소	Love Robert J. (San Francisco CA) Campbell Richard I. (Saratoga CA)
출원인 / 주소	The United States of America as represented by the Secretary of the Air Force (Washington DC 06)
인용정보	피인용 횟수 : 23 인용 특허 : 12

초록 ▼

A system which combines intensity area correlation is disclosed for use with terrain height radar and infrared emissivity systems to give a simultaneous three-mode map matching navigation system. The infrared system senses passive terrain emissions while the height finding radar measures the time between transmission of a radar signal to the ground and receipt of a radar return. The intensity correlator uses the radar returns to sense changes in the reflection coefficient of the terrain. Map matching all three modes simulanteously provides an accurate, highly jam resistant position determination for navigation update.

대표청구항 ▼

A map-matching aircraft navigation system which provides an identification of an aircraft\s position in latitude and longitude, said map-matching navigation system comprising: a first radar system which is housed in said aircraft and which transmits radio frequency signals in a point beam which sequentially strikes terrain in a first rectangular matrix in a pattern of points in rows and columns on terrain beneath said aircraft, said radar system receiving terrain echo returns from said pattern of rows and columns to output a first sensed map of said terrain with varying reflectivity coefficients in each of the points in the rows and columns; a radiometer which is housed in said aircraft and which detects a radiometric temperature image of the terrain in a second rectangular matrix in a pattern of points to output a second sensed map of said terrain with varying measures of thermal emissions and reflected energy; and a means for comparing said first and second sensed maps respectively with first and second stored reference maps, said first stored reference map containing a third rectangular matrix of rows and columns indicative of expected terrain echo return signals from the terrain over which said aircraft is flying, said comparing means finding a maximum correlation between said first sensed map and said first stored reference map to position and first sensed map on said first stored reference map, said comparing means thereby locating said aircraft on said first stored reference map, said comparing means also identifying each point in said third rectangular matrix with a known corresponding latitude and longitude in order to extract and output said aircraft\s position in latitude and longitude from its location on said first stored reference map, said comparing means containing a fourth rectangular matrix of rows and columns indicative of expected radiometric temperature image signals from the terrain over which the aircraft is flying, said comparing means finding a maximum correlation between said second sensed map and said second stored reference map to position said second sensed map on said second stored reference map to position said aircraft on said second stored reference map, said comparing means also identifying each point on fourth rectangular matrix with a known corresponding latitude and longitude in order to extract and output said aircraft\s position in latitude and longitude from its location on said second stored reference map after said second sensed map has been positioned on said second stored reference map.

이 특허에 인용된 특허 (12) 인용/피인용 타임라인 분석

Evans Gregory W. (Whittier CA) Paul James E. (Anaheim CA), Autonomous, check-pointing, navigational system for an airborne vehicle.
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Upatnieks Juris (Ann Arbor MI) Christensen Charles R. (Athens AL) Guenther Bobby D. (Huntsville AL), Coherent optical correlator.
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Rick ; Horst ; Keppel ; Richard A. ; Mitchell ; Harvey A. ; Olsen ; Lowe ll V. ; Colas ; James K. ; Tracy ; Robert E., Correlation system for multiple-sensor reconnaissance vehicle.
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Saffold James A. (Huntsville AL) Green ; Jr. Augustus H. (Huntsville AL) Passmore Ronald C. (Huntsville AL), Dual mode antenna for millimeter wave and infrared radiation.
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Brumbaugh Charles T. (Fullerton CA) Pittenger Robert L. (Orange CA) Klees Robert M. (Costa Mesa CA), Dual mode radio frequency-infrared frequency system.
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Mons Barend (Solana Beach CA) Flowers Donald H. (La Mesa CA) Henderson Robert L. (San Diego CA), Feature navigation system and method.
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Lazarchik Robert E. (Largo FL) Roeder Robert S. (Dunedin FL), Hybrid dual mode radiometric system.
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Frei Ernst (Kloten CHX) Schlaepfer Hansjrg (Winkel CHX), Method of, and apparatus for, area and air space surveillance.
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Hofmann Otto (Kirchstockach DEX) Kroy Walter (Ottobrunn DEX) Nave Peter (Hohenbrunn DEX), Precision navigation apparatus.
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Emmons ; David L. ; Roberts ; Richard E. ; Pasko ; Edward ; Harmon ; Geo rge Lamar, Prestored area correlation tracker.
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Schmidtlein Hubertus (Brinkum DT) Berger Joachim (Bremen DT), Reproduction of a field of view as scanned by a remote controlled aircraft.
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Westerfield Edwin E. (Silver Spring MD), Transdigitizer for relaying signals from global positioning system (GPS) satellites.
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이 특허를 인용한 특허 (23) 인용/피인용 타임라인 분석

Williams John H. ; Cooper Guy F., Airborne IR fire surveillance system providing firespot geopositioning.
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Morici Martin M., Aircraft position validation using radar and digital terrain elevation database.
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Wong, Kwok Leung, Altitude control of an indoor flying toy.
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Case, Timothy John; Mckitterick, John B.; Black, Randy, Apparatus and method for determining the position of a vehicle with respect to a terrain.
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Brookes, Tom M, Automatic registration of images in digital terrain elevation data.
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Ammar Danny F. ; Spires Randall C. ; Sweet Steven R., Autonomous landing guidance system.
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Ammar, Danny F.; Spires, Randall C.; Sweet, Steven R., Autonomous landing guidance system.
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Danny F. Ammar ; Randall C. Spires ; Steven R. Sweet, Autonomous landing guidance system.
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Joseph M. Nicosia ; Keith R. Loss ; Gordon A. Taylor, High accuracy, high integrity scene mapped navigation.
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Nicosia, Joseph M.; Loss, Keith R.; Taylor, Gordon A., High resolution autonomous precision positioning system.
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Nicosia Joseph M. ; Loss Keith R. ; Taylor Gordon A., High-precision near-land aircraft navigation system.
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Hayashi, Keiko; Shiomi, Kakuichi, Image control system controlling traffic of a mobile body, such as an aircraft.
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Nicosia Joseph M. ; Loss Keith R. ; Taylor Gordon A., Landing area obstacle detection radar system.
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Givens Fenton L. (Dallas TX) Bowden Ronald L. (Parker TX), Method for autonomous determination of tie points in imagery.
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Hager,James R.; Almsted,Larry D., Methods and systems for enhancing accuracy of terrain aided navigation systems.
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Honigsbaum Richard F., Process and apparatus for finding stealthcraft.
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Willis, Christopher Jon, Processing SAR imagery.
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Ammar Danny F. ; Spires Randall C. ; Sweet Steven R., Radar based terrain and obstacle alerting function.
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Ammar Danny F. ; Spires Randall C. ; Sweet Steven R., Radar resolution using monopulse beam sharpening.
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Larson, Jacoby; Bruch, Michael, Registration of latitude/longitude coordinates using range detection sensors and digital nautical charts.
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Morinaka Katsuya,JPX ; Yoshiike Nobuyuki,JPX ; Hashimoto Kazuhiko,JPX ; Kawai Tetsuya,JPX, Thermal object measuring apparatus.
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Morinaka Katsuya,JPX ; Yoshiike Nobuyuki,JPX ; Hashimoto Kazuhiko,JPX ; Kawai Tetsuya,JPX, Thermal object measuring apparatus.
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Ell, Todd A.; Rutkiewicz, Robert D., View-point guided weapon system and target designation method.
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A	생활필수품
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[미국특허] Intensity area correlation addition to terrain radiometric area correlation 원문보기