Source: http://spacespin.org, accessed on 30th Oct. 2011	Source: http://www.eorc.jaxa.jp, accessed on 30th Oct. 2011

The PALSAR is an active microwave sensor aboard the Advance Land Observing Satellite (ALOS). The sensor operates at L-band with HH and VV polarisation (HV and VH polarisations are optional). The sensor is beam steerable in elevation and the ScanSAR mode allows obtaining a wider swath than conventional SARs. ALOS was launched in 2004 into a sun-synchronous orbit at the altitude of 700km, providing a spatial resolution of 20m for the fine resolution mode (swath width of 70km) and 100m for the ScanSAR mode (swath width of 360km). The repeat cycle is 46 days and the local time at descending node is about 10:30am. PALSAR data can be downloaded from ERSDAC. ALOS operations have been terminated on May 12 after a communication shutdown due to a power generation anomaly.

Source: http://www.alos-restec.jp

Mission	PALSAR
Sensor	Phased Array L-band Synthetic Aperture Radar (PALSAR)
Spacecraft	Advance Land Observing Satellite (ALOS)
Launch date	24th, Jan. 2006
Design life	3 - 5 years
Orbit	Sun-Synchronous Sub-Recurrent, at an angle of 98.16°, at altitude of 691.65km (at equator).
Spacecraft operations control centre	JAXA and JAROS
Centre frequency (GHz)	1.27 (L-band)
Mode	Fine		ScanSAR	Polarimetric (Experimental mode)
Band width (MHz)	28	14	14, 28	14
Polarisation	HH or VV	HH+HV or VV+VH	HH or VV	HH+HV+VV+VH
Incidence angle(°)	8-60	8-60	18-43	8-30
Swath (km)	40-70	40-70	250-350	20-65
Spatial resolution (m)	7-44	14-88	100 (multi-look)	24-89
Bit length	5 bits	5 bits	5 bits	3 or 5 bits
Radiometric accuracy	scene: 1dB or orbit: 1.5dB
Temporal resolution	Repeat Cycle: 46 days, Sub Cycle: 2 days