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1. WO2006000835 - AMELIORATIONS CONCERNANT L'EXTRACTION DE VITESSE

Numéro de publication WO/2006/000835
Date de publication 05.01.2006
N° de la demande internationale PCT/GB2005/050094
Date du dépôt international 21.06.2005
Demande présentée en vertu du Chapitre 2 10.04.2006
CIB
G01S 13/524 2006.01
GPHYSIQUE
01MÉTROLOGIE; TESTS
SDÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES
13Systèmes utilisant la réflexion ou la reradiation d'ondes radio, p.ex. systèmes radar; Systèmes analogues utilisant la réflexion ou la reradiation d'ondes dont la nature ou la longueur d'onde sont sans importance ou non spécifiées
02Systèmes utilisant la réflexion d'ondes radio, p.ex. systèmes du type radar primaire; Systèmes analogues
50Systèmes de mesure basés sur le mouvement relatif à la cible
52Discrimination entre objets fixes et mobiles ou entre objets se déplaçant à différentes vitesses
522utilisant la transmission de trains discontinus d'ondes modulées par impulsions
524basée sur le décalage de phase ou de fréquence résultant du mouvement des objets, avec référence aux signaux transmis, p.ex. MTI cohérent
CPC
G01S 13/225
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
10using transmission of interrupted, pulse modulated waves
22using irregular pulse repetition frequency
225with cyclic repetition of a non-uniform pulse sequence, e.g. staggered PRF
G01S 13/227
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
10using transmission of interrupted, pulse modulated waves
22using irregular pulse repetition frequency
227with repetitive trains of uniform pulse sequences, each sequence having a different pulse repetition frequency
G01S 13/24
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
10using transmission of interrupted, pulse modulated waves
24using frequency agility of carrier wave
G01S 13/5246
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
50Systems of measurement based on relative movement of target
52Discriminating between fixed and moving objects or between objects moving at different speeds
522using transmissions of interrupted pulse modulated waves
524based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
5246post processors for coherent MTI discriminators, e.g. residue cancellers, CFAR after Doppler filters
G01S 13/726
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
66Radar-tracking systems; Analogous systems
72for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar
723by using numerical data
726Multiple target tracking
G01S 2007/2886
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
28Details of pulse systems
285Receivers
288Coherent receivers
2886using I/Q processing
Déposants
  • BAE SYSTEMS INTEGRATED SYSTEM TECHNOLOGIES LIMITED [GB]/[GB] (AllExceptUS)
  • FINCH, Derek Geoffrey [GB]/[GB] (UsOnly)
  • DEAKIN, Anthony Michael [GB]/[GB] (UsOnly)
Inventeurs
  • FINCH, Derek Geoffrey
  • DEAKIN, Anthony Michael
Mandataires
  • BAE SYSTEMS PLC Group IP Dept
Données relatives à la priorité
0414208.924.06.2004GB
04253789.424.06.2004EP
Langue de publication anglais (EN)
Langue de dépôt anglais (EN)
États désignés
Titre
(EN) IMPROVEMENTS RELATING TO VELOCITY EXTRACTION
(FR) AMELIORATIONS CONCERNANT L'EXTRACTION DE VITESSE
Abrégé
(EN)
A method of extracting a radial velocity characteristic of a target from coherent pulse bursts comprising the steps of applying to data a `best fit' model of the echo returns from a target in the presence of clutter to obtain a residue (error) value and minimising the error value by a predetermined method to give the best fit value for the target radial velocity. The method enables more information to be retrieved from coherent bursts than conventional methods and therefore greatly enhances performance of radiation pulse echo detection.
(FR)
La présente invention a trait à un procédé d'extraction d'une caractéristique de vitesse radiale d'une cible à partir de rafales d'impulsions cohérentes, comprenant les étapes suivantes: l'application aux données d'un modèle d'ajustement optimal des retours-réverbérations provenant d'une cible, en présence de fouillis, en vue d'obtenir une valeur résiduelle (d'erreur), et la minimisation de la valeur d'erreur par un procédé prédéterminé pour l'obtention de la meilleure valeur pour la vitesse radiale cible. Ce procédé permet d'extraire plus d'informations de rafales cohérentes que les procédés classiques et donc améliore considérablement la performance de la détection d'échos d'impulsions de rayonnement.
Également publié en tant que
US2007013580
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