def add_bda(base_config):
    """Add BDA to config file with hard-coded parameter values."""
    bda_config = """
bda:
    max_decorr: 0
    pre_fs_int_time: !dimensionful
        value: 0.1
        units: s
    corr_FoV_angle: !dimensionful
        value: 20
        units: deg
    max_time: !dimensionful
        value: 16
        units: s
    corr_int_time: !dimensionful
        value: 2
        units: s
"""
    return bda_config[1:] + base_config