Processing

Please wait...

Settings

Settings

Goto Application

1. WO1995028652 - A SYSTEM FOR CORRECTING RECEIVER ERRORS IN RADAR

Publication Number WO/1995/028652
Publication Date 26.10.1995
International Application No. PCT/AU1995/000217
International Filing Date 18.04.1995
Chapter 2 Demand Filed 05.10.1995
IPC
G01S 7/35 2006.1
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
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
02of systems according to group G01S13/58
35Details of non-pulse systems
G01S 7/40 2006.1
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
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
02of systems according to group G01S13/58
40Means for monitoring or calibrating
G01S 13/34 2006.1
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
08Systems for measuring distance only
32using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
34using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
G01S 13/38 2006.1
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
08Systems for measuring distance only
32using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
36with phase comparison between the received signal and the contemporaneously transmitted signal
38wherein more than one modulation frequency is used
CPC
G01S 13/34
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
08Systems for measuring distance only
32using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
34using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
G01S 13/38
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
08Systems for measuring distance only
32using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
36with phase comparison between the received signal and the contemporaneously transmitted signal
38wherein more than one modulation frequency is used
G01S 7/354
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
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
02of systems according to group G01S13/00
35Details of non-pulse systems
352Receivers
354Extracting wanted echo-signals
G01S 7/358
G01S 7/4021
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
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
02of systems according to group G01S13/00
40Means for monitoring or calibrating
4004of parts of a radar system
4021of receivers
Applicants
  • THE UNIVERSITY OF QUEENSLAND [AU]/[AU] (AllExceptUS)
  • LONGSTAFF, Ian, Dennis [AU]/[AU] (UsOnly)
  • NOON, David, Andrew [AU]/[AU] (UsOnly)
  • STICKLEY, Glen, Francis [AU]/[AU] (UsOnly)
Inventors
  • LONGSTAFF, Ian, Dennis
  • NOON, David, Andrew
  • STICKLEY, Glen, Francis
Agents
  • CULLEN & CO.
Priority Data
PM 511218.04.1994AU
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) A SYSTEM FOR CORRECTING RECEIVER ERRORS IN RADAR
(FR) SYSTEME DE CORRECTION D'ERREURS DE RECEPTEUR DANS UN RADAR
Abstract
(EN) The system involves applying a predetermined signal to a radar receiver at each frequency of stepped frequencies employed or at the intermediate frequency and obtaining digitised quadrature signals. An estimate of a correction transform is obtained from the quadrature signals and stored. The predetermined signal is disconnected and the transform employed to correct for quadrature phase error and quadrature gain error in the received signals at each frequency step or at the intermediate frequency during reception of signals by the receiver.
(FR) Système de correction d'erreurs de récepteur dans un radar. Ce système consiste à appliquer un signal prédéterminé à un récepteur de radar à chaque fréquence d'une série de fréquences échelonnées utilisées à la fréquence intermédiaire ou proches de celle-ci, et à obtenir des signaux de quadrature numérisés. Une estimation d'une transformée de correction est obtenue à partir des signaux de quadrature et mémorisée. Le signal prédéterminé est supprimé et la transformée utilisée pour corriger l'erreur de phase en quadrature et l'erreur de gain en quadrature des signaux reçus à chaque échelon de fréquence ou à la fréquence intermédiaire au cours de la réception des signaux par le récepteur.
Related patent documents
Latest bibliographic data on file with the International Bureau