High performance BOTDA for long range sensing

2011 ◽  
Author(s):  
Xiaoyi Bao ◽  
Liang Chen
Keyword(s):  
Long Range ◽  
High Performance ◽  
Range Sensing

Stable functionalized graphene oxide–cellulose nanofiber solid electrolytes with long-range 1D/2D ionic nanochannels

2019 ◽  
Vol 7 (36) ◽  
pp. 20871-20877 ◽  
Author(s):  
Wei Jia ◽  
Peiyi Wu
Keyword(s):  
Graphene Oxide ◽  
Fuel Cell ◽  
Long Range ◽  
Solid Electrolytes ◽  
High Performance ◽  
Cellulose Nanofiber ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide

High-performance NPGOM-CNF solid electrolytes with long-range 1D/2D ionic nanochannels for fuel cell applications.

Long-Range LiDAR and Free-Space Data Communication With High-Performance Optical Phased Arrays

2019 ◽  
Vol 25 (5) ◽  
pp. 1-8 ◽  
Author(s):  
Christopher Vincent Poulton ◽  
Matthew J. Byrd ◽  
Peter Russo ◽  
Erman Timurdogan ◽  
Murshed Khandaker ◽  
...  
Keyword(s):  
Long Range ◽  
Free Space ◽  
High Performance ◽  
Phased Arrays ◽  
Data Communication ◽  
Optical Phased Arrays ◽  
Space Data

Advanced 3D imaging lidar concepts for long range sensing

2014 ◽  
Author(s):  
K. J. Gordon ◽  
P. A. Hiskett ◽  
R. A. Lamb
Keyword(s):  
Long Range ◽  
3D Imaging ◽  
Range Sensing

scholarly journals High-Performance Long NoC Link Using Delay-Insensitive Current-Mode Signaling

VLSI Design ◽  
2007 ◽  
Vol 2007 ◽  
pp. 1-13 ◽  
Author(s):  
Ethiopia Nigussie ◽  
Teijo Lehtonen ◽  
Sampo Tuuna ◽  
Juha Plosila ◽  
Jouni Isoaho
Keyword(s):  
Power Consumption ◽  
Long Range ◽  
High Performance ◽  
Phase 1 ◽  
Current Mode ◽  
Wire Length ◽  
Long Distance ◽  
Two Phase ◽  
Worst Case ◽  
Voltage Mode

High-performance long-range NoC link enables efficient implementation of network-on-chip topologies which inherently require high-performance long-distance point-to-point communication such as torus and fat-tree structures. In addition, the performance of other topologies, such as mesh, can be improved by using high-performance link between few selected remote nodes. We presented novel implementation of high-performance long-range NoC link based on multilevel current-mode signaling and delay-insensitive two-phase 1-of-4 encoding. Current-mode signaling reduces the communication latency of long wires significantly compared to voltage-mode signaling, making it possible to achieve high throughput without pipelining and/or using repeaters. The performance of the proposed multilevel current-mode interconnect is analyzed and compared with two reference voltage mode interconnects. These two reference interconnects are designed using two-phase 1-of-4 encoded voltage-mode signaling, one with pipeline stages and the other using optimal repeater insertion. The proposed multilevel current-mode interconnect achieves higher throughput and lower latency than the two reference interconnects. Its throughput at 8 mm wire length is 1.222 GWord/s which is 1.58 and 1.89 times higher than the pipelined and optimal repeater insertion interconnects, respectively. Furthermore, its power consumption is less than the optimal repeater insertion voltage-mode interconnect, at 10 mm wire length its power consumption is 0.75 mW while the reference repeater insertion interconnect is 1.066 mW. The effect of crosstalk is analyzed using four-bit parallel data transfer with the best-case and worst-case switching patterns and a transmission line model which has both capacitive coupling and inductive coupling.

scholarly journals Cellular Simulation for Distributed Sensing over Complex Terrains

2018 ◽  
Author(s):  
Tuyen Truong ◽  
Bernard Pottier ◽  
Hiep Huynh
Keyword(s):  
Long Range ◽  
Graphics Processing Units ◽  
High Performance ◽  
Physical Phenomenon ◽  
Cellular Systems ◽  
Large Area ◽  
Simulation Techniques ◽  
And Performance ◽  
Application Fields ◽  
Physical Phenomena

Long-range radio transmissions open new sensor application fields, in particular for environment monitoring. As an example, the {\sl LoRa} radio protocol enables to connect remote sensors at distance as long as ten kilometers in line-of-sight. However, the large area covered also bring several difficulties, such as the placement of sensing devices in regard to geography topology, or the variability of communication latency. Sensing the environment also carries constraints related to the interest of sensing points in relation with a physical phenomenon. Criteria for designs are thus evolving a lot from the existing methods, especially in complex terrains. This article describes simulation techniques based on geography analysis to compute long-range radio coverages and radio characteristics in these situations. As radio propagation is just a particular case of physical phenomena, it is shown how a unified approach also allows to characterize the behavior of potential physical risks. The case of heavy rainfall and flooding is investigated. Geography analysis is achieved using segmentation tools to produce cellular systems which are in turn translated into code for high-performance computations. The paper provides results from practical complex terrain experiments using LoRa, that confirm the accuracy of the simulation, scheduling characteristics for sample networks, and performance tables for simulations on middle range Graphics Processing Units (GPUs).

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