The table below provides a simplistic comparison of the tools listed above.
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Relative Position Indicator
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TSS Lite + RPI
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Terminal Sequencing and Spacing
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Type of Display Aid
|
Relative
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Absolute
|
Absolute
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Mythology behind Display Aid
|
Calculated Relative Position
|
Calculated Relative Position
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Schedule Based Position
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Number of System Dependencies
|
1 (STARS)
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2 (STAR, ERAM, and TBFM)
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3 (STARS, ERAM, and TBFM)
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Equipage
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Mixed Equipage
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Mixed Equipage
|
Mixed Equipage
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Environment
|
Aids in Complex Merges within Terminal Environment
|
Aids in Complex Merges within Terminal Environment
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Aids in Complex Merges within Terminal Environment
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Connection with TBFM
|
Complement TBFM System
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One piece of information inherent in TBFM
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Developed within TBFM System
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User
|
Benefits may vary based on controller experience (inexperienced can gain greater benefit)
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Benefits may incrementally improve with additional information for controller
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Precision of tools allows for inexperienced/ experienced controller to see benefits
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Incorporation of Winds for Solution?
|
No
|
Yes
|
Yes
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Provide Trajectory Solution?
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No
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Yes via sequence
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Yes via speed and sequence
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Benefits
| -
Reduces controller workload
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Early Application of Speed Delay/Reduce Delay Vectoring
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Enables OPD operations
| -
Provides two more pieces of information to controllers to help sequence a/c
| -
Further reduces controller Workload
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Allow 95% a/c to stay on RNP curved path approach
-
Provide streamlined arrival solution; increasing predictability
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