Title :
Calibration and validation of the Pi-SAR-L2
Author :
Shimada, Masanobu ; Kawano, Namiko ; Watanabe, Manabu ; Motooka, Takeshi ; Ohki, M.
Author_Institution :
Earth Obs. Res. Center, Japan Aerosp. Exploration Agency, Tsukuba, Japan
Abstract :
This paper summarizes the calibration and validation results of the JAXA´s new airborne polarimetric interferometric L-band synthetic aperture radar, i.e., Pi-SAR-L2, developed in 2011-2012 and started the operation in April of 2012. Pi-SAR-L2 is enhanced for the radiometric and geometric performances with 85MHz bandwidth and the accurate Inertial Navigation System. Polarimetric and geometric calibration has been conducted using the corner reflectors and the forest at Tomakomai-forest in Hokkaido. Statistical evaluation of the data acquired at the various test sites determined the noise equivalent sigma-zero as -54dB, which is significantly low enough value to apply the Pi-SAR-L2 at the various research areas.
Keywords :
airborne radar; calibration; geometry; inertial navigation; noise; radar interferometry; radar polarimetry; radiometry; remote sensing by radar; synthetic aperture radar; AD 2011 to 2012; AD 2012 04; Hokkaido; JAXA; Pi-SAR-L2 calibration; Pi-SAR-L2 validation; Tomakomai-forest; accurate inertial navigation system; bandwidth 85 MHz; corner reflectors; data acquired; enhanced Pi-SAR-L2; geometric calibration; geometric performance; new airborne polarimetric interferometric L-band synthetic aperture radar; noise equivalent sigma-zero determination; polarimetric calibration; radiometric performance; research areas; statistical evaluation; test sites; Azimuth; Bandwidth; Calibration; L-band; Radiometry; Spaceborne radar; Synthetic aperture radar;
Conference_Titel :
Synthetic Aperture Radar (APSAR), 2013 Asia-Pacific Conference on
Conference_Location :
Tsukuba
