DocumentCode :
2444319
Title :
Correlation based characterisation of phased array components
Author :
Soualle, Francis ; Stangl, Martin
Author_Institution :
Astrium GmbH, Friedrichshafen, Germany
fYear :
2003
fDate :
14-17 Oct. 2003
Firstpage :
235
Lastpage :
240
Abstract :
The German SAR satellite TerraSAR is currently under development. The SAR instrument onboard the satellite will be equipped with an array antenna consisting of 384 radiators, each with its own transmit-receive modules (TRM). As usual for this kind of active planar antennas, all TRMs are independently adjustable in phase and gain. To ensure precise knowledge of phase and gain of each TRM also after launch, an in-flight module characterization/calibration capability is implemented within the instrument, following a correlation based approach described by [D. Hounan et al., 2002]. The proposed calibration method allows simultaneous characterization by phase and gain of a large number of TRM or TRM clusters, ideally of all TRMs of the antenna. This paper outlines the characterization method and presents results onto the parameter choice of the characterization algorithm, together with results on achievable characterization accuracy. Also TRM failures are being assessed w.r.t. their effect onto characterization. For such TRMs, actually transmitted signal phase and amplitude do not correspond to commanded phase any longer. The robustness of the estimation against such damage is to be analyzed as well as its ability to detect the non-plausible TRM values.
Keywords :
active antenna arrays; calibration; correlation methods; phased array radar; planar antenna arrays; radar antennas; spaceborne radar; synthetic aperture radar; German SAR satellite; TerraSAR; active planar antennas; calibration method; correlation based characterisation; phased array components; synthetic aperture radar; transmit-receive modules; Antenna arrays; Calibration; Clustering algorithms; Instruments; Phased arrays; Planar arrays; Robustness; Satellite antennas; Transmission line measurements; Transmitting antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Phased Array Systems and Technology, 2003. IEEE International Symposium on
Print_ISBN :
0-7803-7827-X
Type :
conf
DOI :
10.1109/PAST.2003.1256987
Filename :
1256987
Link To Document :
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