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1. (WO1985000896) TWO DIMENSION RADAR SYSTEM WITH SELECTABLE THREE DIMENSION TARGET DATA EXTRACTION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1985/000896 International Application No.: PCT/US1984/001230
Publication Date: 28.02.1985 International Filing Date: 31.07.1984
IPC:
G01S 13/42 (2006.01) ,G01S 13/66 (2006.01) ,G01S 13/87 (2006.01)
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02
Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06
Systems determining position data of a target
42
Simultaneous measurement of distance and other coordinates
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
66
Radar-tracking systems; Analogous systems
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
87
Combinations of radar systems, e.g. primary radar and secondary radar
Applicants:
HUGHES AIRCRAFT COMPANY [US/US]; 200 North Sepulveda Boulevard El Segundo, CA 90245, US
Inventors:
ANDREWS, La Vern, A.; US
MORAITIS, Dennis; US
Agent:
RUNK, Thomas, A. @; Hughes Aircraft Company P.O. Box 1042 Bldg. C2, M/S A126 El Segundo, CA 90245, US
Priority Data:
520,40805.08.1983US
Title (EN) TWO DIMENSION RADAR SYSTEM WITH SELECTABLE THREE DIMENSION TARGET DATA EXTRACTION
(FR) SYSTEME RADAR BIDIMENSIONNEL A EXTRACTION SELECTIONNABLE DE DONNEES DE CIBLES TRIDIMENSIONNELLES
Abstract:
(EN) A single two dimension radar system (20) having the capability of developing two dimensional data on all targets in its surveillance volume and three dimensional data for selected targets in its surveillance volume. A single phased array antenna (23) having two selectable elevation beam patterns, a wide beam and a narrow beam, is rotated in azimuth. In the two dimension mode, targets are detected and tracked in an azimuth and range position through use of the wide elevation beam. Upon selecting a particular target in track for three dimension data extraction, the radar system changes to the three dimension mode prior to the azimuth position of the selected target, and performs a sequential lobing process of the narrow beam in elevation angle. The power ratios of the target returns in the sequential lobes are analyzed and an elevation position of the selected target is determined. The radar system reverts to the two dimension mode after leaving the azimuth position of the selected target.
(FR) Système radar bidimensionnel unique (20) pouvant développer des données bidimensionnelles sur toutes les cibles dans son volume de surveillance et des données tridimensionnelles pour des cibles sélectionnées dans son volume de surveillance. Une antenne à réseau monophasé (23) possédant deux configurations sélectionnables de faisceaux d'élévation, un faisceau large et un faisceau étroit, est en rotation azimutale. En mode bidimensionnel, les cibles sont détectées et suivies dans une position azimutale et de portée grâce au faisceau large d'élévation. En sélectionnant une cible poursuivie particulière pour extraire des données tridimensionnelles, le système radar commute en mode tridimensionnel avant la position azimutale de la cible sélectionnée, et exécute une commutation séquentielle de lobes du faisceau étroit dans l'angle d'élévation. Les rapports de puissance des signaux renvoyés par la cible dans les lobes séquentiels sont analysés, afin de déterminer une position d'élévation de la cible sélectionnée. Le système radar revient en mode bidimensionnel après avoir quitté la position azimutale de la cible sélectionnée.
Designated States: AU, DK, JP, NO
European Patent Office (AT, BE, CH, DE, FR, GB, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO19851372IL72646EP0151640AU1984033965