无人机系统路线图 Unmanned Aircraft Systems Roadmap(127)

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APPENDIX C - COMMUNICATIONS
Page C-19
WNW is currently envisioned as a 2-10 Mbit/s, self organizing network, initially acting as a backbone connection for self organizing ground and airborne networks, eventually replacing all ground and airborne networking radios.  For WNW to become the migration path for CDL wide band (>274 Mbit/s) applications, however, high-powered, directional JTRS hardware would have to be developed and fielded.  In addition, a WNW waveform, capable of supporting such data rates would have to be developed, integrated, tested and fielded. Current funding does not support this approach.
Spiral Migration
to Seamless

Full GIG Deployment: TSAT, Teleports, GIG-BE, JTRS, NCES
Spiral 4-Seamless capability to create and use global repository of

2016 information, available to all authorized users-Land, sea, air and space connectivity
-Support to stationary users and users on the move
GIG
Spiral 3Transition to Transformational Satellite (TSAT)  with Teleports
2012 -Extend Network Reach
-Dynamic Bandwidth Allocation
-UAV LaserComm Connectivity
Spiral 2Multiple Inter-Networked Systems
2008 -UAV as Transport provider
-End to End Network Connectivity
-Extended wideband Capability
Spiral 1Initial Capability
2006 -IP based transport
-Metadata registration
-Field Net-Centric systems: JTRS, WNW, WIN-T
-IP enable CDL data links
Current Experience – Unique non-interoperable solutions (stovepipes)
FIGURE C-9. SPIRALED STAGES TO A UA COMMUNICATIONS NETWORK.
Another possible direction would be, in keeping with currently published and supported OSD guidance, continuing to evolve the CDL specification using existing processes.  Initial tasks would be to migrate to a net-centric footing, by isolating the data and transport layers from the physical connection, making CDL a wideband, point to point, network connection, vice the tightly coupled closed circuit it is today.  Evolving software defined hardware components and supporting wideband waveforms would come next bringing the CDL into SCA compliance, making it part of the family of JTRS solutions.  Current funding, however, does not support this approach either.
Regardless of which direction future CDL programming takes, however, one imperative remains clear.  Systems that need a CDL for wideband data exchanges, must submit their specific performance requirements to the JTRS program office to help guide future wide band data link procurement efforts.  Figure C-10 illustrates these two potential directions.
APPENDIX C - COMMUNICATIONS
Page C-20
JTRS WNW capable of 274Mbps+ And range exceeding 250 nm

CDL requirements evolution

SCA compliant, JTRS version of software defined CDL
FIGURE C-10. POTENTIAL CDL MIGRATION PATHS.
JTRS

The Joint Tactical Radio System program addresses legacy radio problems (refer to the section entitled Radios) through a two-pronged approach:  software and hardware. First, the SCA, written for the JTRS program, specifies guidelines for developing software-defined waveforms.  The Object Management Group (OMG) has adopted the SCA as an industry standard.  In addition to software, JTRS certified hardware is being developed that can import software-defined waveforms and communicate using them.
　
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