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1. WO1980001956 - RADAR SYSTEM

Publication Number WO/1980/001956
Publication Date 18.09.1980
International Application No. PCT/NL1980/000006
International Filing Date 13.02.1980
IPC
G01S 13/44 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06Systems determining position data of a target
42Simultaneous measurement of distance and other coordinates
44Monopulse radar, i.e. simultaneous lobing
G01S 3/48 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
3Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
02using radio waves
14Systems for determining direction or deviation from predetermined direction
46using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
48the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured
CPC
G01S 13/4454
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06Systems determining position data of a target
42Simultaneous measurement of distance and other co-ordinates
44Monopulse radar, i.e. simultaneous lobing
4454phase comparisons monopulse, i.e. comparing the echo signals received by an interferometric antenna arrangement
G01S 3/48
GPHYSICS
01MEASURING; TESTING
SRADIO 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
3Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
02using radio waves
14Systems for determining direction or deviation from predetermined direction
46using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
48the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured
Applicants
Inventors
Priority Data
790200914.03.1979NL
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) RADAR SYSTEM
(FR) SYSTEME RADAR
Abstract
(EN)
A radar system comprises an antenna (2), which consists of a reflector (5) with two vertically mounted receiving elements (6, 7), and two receiving channels (3, 4) connected to the receiving elements. The receiving elements form, in cooperation with the reflector, practically coinciding cosecant-squared beam patterns. A measuring circuit (25), connected to the two receiving channels, measures the phase difference between the signals received in the receiving elements, which phase difference corresponds with the elevation angle of the target from which the signals were received.
(FR)
Un systeme radar comprend une antenne (2), qui consiste en un reflecteur (5) avec deux elements recepteurs montes verticalement (6, 7) et deux canaux recepteurs (3, 4) connectes aux elements recepteurs. Les elements recepteurs forment, en association avec le reflecteur, des reseaux a faisceaux compenses pratiquement coincidents. Un circuit de mesure (25), connecte aux deux canaux de reception, mesure la difference de phase entre les signaux recus dans les elements recepteurs, cette difference de phase correspondant a l"angle d"elevation de la cible a partir de laquelle les signaux sont recus.
Also published as
NO19803275
Latest bibliographic data on file with the International Bureau