Title :
Individual T/R module characterisation of the TerraSAR-X active phased array antenna by calibration pulse sequences with orthogonal codes
Author :
Bräutigam, Benjamin ; Schwerdt, Marco ; Bachmann, Markus ; Stangl, Martin
Author_Institution :
German Aerosp. Center, Wessling
Abstract :
TerraSAR-X is a high resolution synthetic aperture radar (SAR) satellite due for launch in 2007. Its active phased array X-Band antenna hosts 384 transmit/receive modules controlling the beam steering in azimuth and elevation direction. Precise modelling of the antenna is only possible if the actual characteristics of each individual transmit/receive module are known. TerraSAR-X has been equipped with an innovative characterisation mode based on the so-called PN Gating method. Individual and simultaneous characterisation of all transmit/receive modules is realised under most realistic conditions with the same power loads like in the nominal mode. This paper shows the results of PN Gating measurements on a satellite SAR system.
Keywords :
active antenna arrays; antenna phased arrays; beam steering; remote sensing; synthetic aperture radar; AD 2007; PN Gating method; T/R module characterisation; TerraSAR-X; active phased array X-Band antenna; beam steering; calibration pulse sequences; elevation direction; high resolution SAR satellite; high resolution synthetic aperture radar satellite; innovative characterisation mode; orthogonal codes; transmit-receive modules; Antenna arrays; Azimuth; Beam steering; Calibration; Directive antennas; Phased arrays; Receiving antennas; Satellites; Synthetic aperture radar; Transmitting antennas; Internal Calibration; Phased Array Antenna; Synthetic Aperture Radar (SAR).; TerraSAR-X; Transmit/Receive Modules;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
DOI :
10.1109/IGARSS.2007.4424034
