Mem
o
ry
(
M
eg
aby
tes)
FIGURE 4.1-2. RELATIONSHIP OF PROCESSOR SPEED AND MEMORY.
Recommended Investment Strategy: Rely on commercial markets (personal and commercial computers) to drive processor technology. Focus DoD research on radiation–tolerant integrated circuit components and algorithms.
4.2 COMMUNICATION TECHNOLOGIES
The principal issue of communications technologies is flexibility, adaptability, and cognitive
Page 49
controllability of the bandwidth, frequency, and information/data (e.g. differentiated services, separate routing of data based on priority, latency, etc) flows. This means that the systems will be net-centric and that network services like C2, data management and flow control, etc., will have to be integrated into the systems and concepts of operations. In-flight entertainment and finance-based systems will not handle these issues well for military applications. The personal information services providers might provide technology paths forward, but major portions of the government will need to invest in the net-centric solutions required by the U.S. Government. One way of addressing bandwidth and spectrum constraints is by re-using certain communications paths in new ways (e.g. tactical radios used as orderwires for directional links, tightly coupled RF backup links for free space optics (lasercomm), etc.). Communications technologies might be repartitioned to address apertures, RF Front ends, software defined modems/bandwidth efficient waveforms, multiple signals in space, crossbanding, digital interfaces, new communications approaches (e.g. free space optics), and hybrid approaches.
4.2.1 Data Links
Airborne data link rates and processor speeds are in a race to enable future UA capabilities. Today, and for the near-term, the paradigm is to relay virtually all airborne data to the ground and process it there for interpretation and decision-making. Eventually, onboard processing power will outstrip data link capabilities and allow UA to relay the results of their data to the ground for decision making. At that point, the requirement for data link rates in certain applications, particularly imagery collection, should drop significantly. Meanwhile, data compression will remain relevant as long as band-limited communications exist, but it is unlikely compression algorithms alone will solve the near term throughput requirements of advanced sensors. A technology that intentionally discards information is not the preferred technique. For now, compression is a concession to inadequate bandwidth.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：无人机系统路线图 Unmanned Aircraft Systems Roadmap(51)
