Title :
Calibration and performance analysis of the PAU- RAD instrument
Author :
Bosch-Lluis, X. ; Camps, A. ; Marchan-Hernandez, J.F. ; Ramos-Perez, I. ; Rodríguez-Álvarez, N. ; Banqué, X. ; Guerrero, M.A.
Author_Institution :
Univ. Polytech. de Catalunya, Barcelona
Abstract :
This paper presents the calibration of the PAU-RAD instrument: a novel pseudo-correlation radiometer with digital beamforming, it consist on a Wilkinson power splitter and two receiving chains whose outputs are cross-correlated. To types of calibration are required: an internal hardware, relative calibration to perform the phase and an amplitude correction, and internal radiometric calibration. The simplified and unified calibration procedure is presented using internal well-known temperatures.
Keywords :
antenna arrays; calibration; oceanographic equipment; passive radar; radar antennas; radiometers; remote sensing by radar; PAU-RAD instrument calibration; PAU-RAD instrument performance analysis; Wilkinson power splitter; amplitude correction; cross-correlated receiving chain output; digital beamforming; internal hardware calibration; internal radiometric calibration; phase correction; pseudocorrelation radiometer; unified calibration procedure; Amplitude estimation; Array signal processing; Calibration; Demodulation; Frequency estimation; Instruments; Microwave radiometry; Ocean temperature; Performance analysis; Phase estimation; calibration; phasegain; radiometer;
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.2007.4423330
