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1. WO2000043808 - METHOD FOR INTERFEROMETRICAL RADAR MEASUREMENT

Publication Number WO/2000/043808
Publication Date 27.07.2000
International Application No. PCT/DE1999/004066
International Filing Date 22.12.1999
Chapter 2 Demand Filed 08.06.2000
IPC
G01S 13/90 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
88Radar or analogous systems, specially adapted for specific applications
89for mapping or imaging
90using synthetic aperture techniques
CPC
G01S 13/9023
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
88Radar or analogous systems specially adapted for specific applications
89for mapping or imaging
90using synthetic aperture techniques ; , e.g. synthetic aperture radar [SAR] techniques
9021SAR image post-processing techniques
9023combined with interferometric techniques
G01S 13/9082
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
88Radar or analogous systems specially adapted for specific applications
89for mapping or imaging
90using synthetic aperture techniques ; , e.g. synthetic aperture radar [SAR] techniques
904SAR modes
9082Rotating SAR [ROSAR]
Applicants
  • ASTRIUM GMBH [DE/DE]; D-81663 München, DE (AllExceptUS)
  • WOLFRAMM, Aribert, P. [DE/DE]; DE (UsOnly)
  • KLAUSING, Helmut [DE/DE]; DE (UsOnly)
Inventors
  • WOLFRAMM, Aribert, P.; DE
  • KLAUSING, Helmut; DE
Priority Data
199 02 007.821.01.1999DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR INTERFEROMETRISCHEN RADARMESSUNG
(EN) METHOD FOR INTERFEROMETRICAL RADAR MEASUREMENT
(FR) PROCEDE DE MESURE RADAR INTERFEROMETRIQUE
Abstract
(DE)
Bei einem Verfahren zur interferometrischen Radarmessung bei einem nach dem ROSAR-Prinzip arbeitenden Hubschrauber (Heli-Radar) wird vorgeschlagen, dass zu einem der auf dem rotierenden Drehkreuz angeordneten Sender des ROSAR-Systems zwei kohärente Empfangsantennen mit Empfangskanälen zugeordnet werden und der Wegunterschied ($g(D)R) der beiden Abstände (R+$g(D)R, R) zum gemessenen Aufpunkt (P) in an sich bekannter Weise aus der Wellenlänge ($g(l)) des gesendeten Radarsignals und des gemessenen Phasenunterschiedes des Empfangsechos der beiden kohärenten Empfangskanäle berechnet werden.
(EN)
The invention relates to a method for interferometrical radar measurement in a helicopter equipped with (heli radar). Said helicopter operates according to the ROSAR principle. Sensors of the ROSAR system are mounted on a rotating turnstile. Two coherent reception antennas with reception channels are assigned to one of said sensors. The path distance ($g(D)R) between the two distances (R+$g(D)R, R) and the point under consideration (P) is calculated from the wavelength ($g(l)) of the emitted radar signal and of the measured phase difference of the received echo of both coherent reception channels using a known method.
(FR)
L'invention concerne un procédé de mesure radar interférométrique pour un hélicoptère fonctionnant selon le principe du ROSAR (HeliRadar). Dans le procédé selon l'invention, on affecte à l'un des émetteurs placés sur le tourniquet rotatif du système ROSAR deux antennes de réception cohérentes pourvues de voies de réception et on calcule la différence de chemin ($g(D)R) des deux distances (R+$g(D)R, R) au point d'impact mesuré (P), de manière connue en soi, à partir de la longueur d'onde ($g(l)) du signal radar émis et de la différence de phase mesurée de l'écho de réception des deux voies de réception cohérentes.
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