#28 set "orbit_direction" to compute "SAR_center_look_direction" in mapper_asar.py
#28 set "orbit_direction" to compute "SAR_center_look_direction" in mapper_asar.py
#28 delete unnecessary comment
#issue28 Merge develop and solve the conflicts.
#28 remove upwards_azimuth_direction() and rename azimuth_up to azimuth_y.
#28 Fix an error in test_domain. replace azimuth_up to azimuth_y.
28 Merge develop and solve the conflicts.
#28 Merge develop and solve the conflicts.
Merge branch 'issue28' into develop