code: def proj_params(sampling_angle):
      """Get projection parameters."""
      return nav.ProjectionParameters(
          image_offset=nav.ImageOffset(
              line_offset=1378.5,
              pixel_offset=1672.5,
          ),
          scanning_angles=nav.ScanningAngles(
              stepping_angle=0.000140000047395,
              sampling_angle=sampling_angle,
              misalignment=np.identity(3).astype(np.float64),
          ),
          earth_ellipsoid=nav.EarthEllipsoid(
              flattening=0.003352813177897,
              equatorial_radius=6378136,
          ),
      )
  
imports: import numpy
  import pytest
  from satpy.tests.reader_tests.utils import get_jit_methods, skip_numba_unstable_if_missing
label_desc: Use image node_id 6 for calling a global function with example usage: proj_params(sampling_angle) and returns: nav