ALOS Data Users Handbook
ALOS Data Users Handbook
ALOS Data Users Handbook
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Section 7 Overview of Processing Algorithms4) Identification of two attitude determination systems is decided by the attitude determination flag ofPCD. The Standard attitude determination system: LSB 0, the precision attitude determinationsystem: LSB 1.5) With respect to data that exists immediately before switching to the standard attitude determinationsystem, the reliability of the attitude accuracy is low.Table 7.1-4 Type of Attitude <strong>Data</strong><strong>Data</strong> <strong>Data</strong> Type Definition Cycle AccuracyStoredTelemetryRemarksPrecision attitudedataQuaternion Transformation parameter betweenthe internal coordinate system(J2000) and the satellite coordinatesystem.Standard coordinate system isJ2000.100 msec 2.0 x 10-4 deg. N/A Generated at theoff-line processingat the groundAttitude data of the Quaternionprecision attitudedetermination systemAttitude data of the Attitudestandard attitude error angledetermination systemTransformation parameter betweenthe internal coordinate system(J2000) and the satellite coordinatesystem.Standard coordinate system isJ2000.Attitude angle calculated from theEarth sensor.0.1 sec 2.0 x 10-4 deg. Attitudedetermination 31 sec 0.08 deg. PCD auxiliarydata7-6