data handling and distribution, improvements in navigation accuracy, development of integrated communication systems, and identification of potentially revolutionary technologies.

Before prioritizing the level 3 technologies included in TA05, several technologies were renamed, deleted, or moved. The changes are explained below and illustrated in Table H.1. The complete, revised technology area breakdown structure (TABS) for all 14 Tas is shown in Appendix B.

TABLE H.1 Technology Area Breakdown Structure for TA05, Communication and Navigation

NASA Draft Roadmap (Revision 10) Steering Committee-Recommended Changes
TA05 Communication and Navigation Two technologies have been merged and one has been renamed.

5.1.     Optical Comm. and Navigation


5.1.1.    Detector Development


5.1.2.    Large Apertures


5.1.3.    Lasers


5.1.4.    Acquisition and Tracking


5.1.5.    Atmospheric Mitigation


5.2.     Radio Frequency Communications


5.2.1.    Spectrum Efficient Technologies


5.2.2.    Power Efficient Technologies


5.2.3.    Propagation


5.2.4.    Flight and Ground Systems


5.2.5.    Earth Launch & Reentry Comm.


5.2.6.    Antennas


5.3.     Internetworking


5.3.1.    Disruptive Tolerant Networking


5.3.2.    Adaptive Network Topology


5.3.3.    Information Assurance


5.3.4.    Integrated Network Management


5.4.     Position, Navigation, and Timing


5.4.1.    Timekeeping

Merge 5.4.1 and 5.4.2:

5.4.2.    Time Distribution

Rename: 5.4.1. Timekeeping and Time Distribution

5.4.3.    Onboard Autonomous Navigation and Maneuver

Delete: 5.4.2. Time Distribution

5.4.4.    Sensors and Vision Processing Systems


5.4.5.    Relative and Proximity Navigation


5.4.6.    Auto Precision Formation Flying


5.4.7.    Auto Approach and Landing


5.5.     Integrated Technologies


5.5.1.    Radio Systems


5.5.2.    Ultra Wideband


5.5.3.    Cognitive Networks


5.5.4.    Science from the Comm. System


5.5.5.    Hybrid Optical Comm. and Nav. Sensors


5.5.6.    RF/Optical Hybrid Technology


5.6.     Revolutionary Concepts


5.6.1.    X-Ray Navigation


5.6.2.    X-Ray Communications


5.6.3.    Neutrino-Based Navigation and Tracking


5.6.4.    Quantum Key Distribution


5.6.5.    Quantum Communications


5.6.6.    SQIF Microwave Amplifier


5.6.7.    Reconfigurable Large Apertures

Rename: 5.6.7. Reconfigurable Large Apertures Using Nanosat Constellations

NOTE: Technologies 5.4.1, Timekeeping, and 5.4.2, Time Distribution, have been merged and renamed: 5.4.1 Timekeeping and Time Distribution because the technologies are very similar and it would be most effective to develop them together. Technology 5.6.7, Reconfigurable Large Apertures, has been renamed 5.6.7 Reconfigurable Large Apertures Using Nanosat Constellations to better indicate the content of this technology as described in the TA05 roadmap.

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