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1. WO1986000998 - ANTENNA TRACKING SYSTEM USING SEQUENTIAL LOBING

Publication Number WO/1986/000998
Publication Date 13.02.1986
International Application No. PCT/IT1985/000022
International Filing Date 24.07.1985
IPC
G01S 3/22 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
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
16using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic
22derived from different combinations of signals from separate antennas, e.g. comparing sum with difference
G01S 3/42 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
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
38using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
42the desired condition being maintained automatically
CPC
G01S 3/22
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
16using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic
22derived from different combinations of signals from separate antennas, e.g. comparing sum with difference
G01S 3/42
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
38using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
42the desired condition being maintained automatically
Applicants
  • SELENIA SPAZIO [IT]/[IT] (AllExceptUS)
  • PERROTTA, Giorgio [IT]/[IT] (UsOnly)
  • LOSQUADRO, Giacinto [IT]/[IT] (UsOnly)
Inventors
  • PERROTTA, Giorgio
  • LOSQUADRO, Giacinto
Agents
  • MARZI, Adriana
Priority Data
48646-A/8427.07.1984IT
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) ANTENNA TRACKING SYSTEM USING SEQUENTIAL LOBING
(FR) SYSTEME DE POURSUITE A ANTENNE AVEC COMMUTATION SEQUENTIELLE DE LOBES
Abstract
(EN) System fine tracking R.F. sensor based capable of acquiring ground beacons within an angular field which is substantially larger than the -3 dB antennae beamwidth beams, to be used preferably on board artificial telecommunication satellites equipped with single or multiple beams antennae.
(FR) Un système de poursuite précise à senseur HF est susceptible de localiser des faisceaux au sol dans un champ angulairement sensiblement plus grand que les faisceaux d'antennes de largeur de faisceau -3dB. Le système est utilisé de préférence dans des satellites artificiels de télécommunications pourvus d'antennes à faisceaux uniques ou multiples.
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