Light Time Delay Options

If you have selected an Access stopping condition and are using Light Time Delay in the computation, you can set Light Time Delay Options by clicking Options. The following table describes the light time delay options available:

Option	Description
Signal Sense (Base Object)	Enables you to set the direction of the signal. Transmit- The signal is being sent from the object you selected as the Clock Host. Receive - The signal is being received by the object you selected as the Clock Host.
Clock Host	Time values are reported with a clock collocated with the clock host object. Base- Refers to the object that brought up the Access Tool. Target- Refers to an object from the Associated Objects list.
Aberration Type	Sets the model of aberration to use in access computations. The values are: None- Ignores aberration. Annual- Considers annual aberration only. Thus, aberration is applied only in cases where the light time delay is computed using the solar system barycenter frame. Total- Applies the full aberration correction when computing light time delay.
Light Time Delay Convergence Tolerance	Sets the tolerance used when iterating to determine the light time delay. The iteration stops when the improvement in the value is less than this tolerance.