| Description: time_constant_type distinguishes between three types of instrumental time constant assumed in a square-well model. This attribute is required if the time_constant attribute is present. |
| Namespace Id: rings | Steward: rings | Class Name: Occultation_Ring_Profile | Type: ASCII_Short_String_Collapsed |
| Minimum Value: None | Maximum Value: None | Minimum Characters: 1 | Maximum Characters: 255 |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: SHORT_STRING |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | Double Pole | double pole filter. |
| | None | No instrumental time constant, in which case time_constant and sigma_time_constant are both zero. |
| | Single Pole | A single pole filter with impulse response given by h(t) = (t/t_c^2)exp(-t/t_c) for t greater than 0, 0 for t less than 0, where t_c is the time constant. See Eq. 9 Elliot et al. (1984) Astron. J. 1587-1603. |