1A2-H03 Wearable Line-of-Sight Detection System Using MEMS(MEMS and Nano-Technology)

2011 ◽  
Vol 2011 (0) ◽  
pp. _1A2-H03_1-_1A2-H03_2 ◽  
Author(s):  
Norihisa MIKI ◽  
Akira OIKAWA ◽  
Takayuki MURO
Keyword(s):  
Detection System ◽  
Line Of Sight ◽  
Nano Technology

Prediction on operating range of passive troposcatter detection system

2018 ◽  
Vol 11 (1) ◽  
pp. 22-26 ◽  
Author(s):  
Zan Liu ◽  
Xihong Chen
Keyword(s):  
Electromagnetic Wave ◽  
Analytical Study ◽  
Detection System ◽  
Rain Attenuation ◽  
Propagation Loss ◽  
Line Of Sight ◽  
Time Model ◽  
Operating Range ◽  
Statistic Model ◽  
Loss Models

AbstractElectromagnetic wave of enemy radar propagated by troposcatter is a valuable candidate for beyond line-of-sight detection. There is no analytical study considering the operating range of passive troposcatter detection system. In this paper, we study the way to predict the operating range, which is dominated by propagation loss. The key propagation loss models including statistic model and real-time model are analyzed. During deducing the latter loss model, Hopfield model is introduced to precisely describe the tropospheric refractivity. Meanwhile, rain attenuation is also taken into consideration. Several examples demonstrate the feasibility of predicting operating range through the proposed method.

scholarly journals Passive Visible Light Detection of Humans

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 1902 ◽  
Author(s):  
Kenneth Deprez ◽  
Sander Bastiaens ◽  
Luc Martens ◽  
Wout Joseph ◽  
David Plets
Keyword(s):  
Visible Light ◽  
Detection Rate ◽  
Detection System ◽  
Light Emitting Diode ◽  
Line Of Sight ◽  
Controlled Environment ◽  
Ambient Light ◽  
Light Emitting ◽  
Light Sensing ◽  
Reflected Light

This paper experimentally investigates passive human visible light sensing (VLS). A passive VLS system is tested consisting of one light emitting diode (LED) and one photodiode-based receiver, both ceiling-mounted. There is no line of sight between the LED and the receiver, so only reflected light can be considered. The influence of a human is investigated based on the received signal strength (RSS) values of the reflections of ambient light at the photodiode. Depending on the situation, this influence can reach up to ± 50 % . The experimental results show the influence of three various clothing colors, four different walking directions and four different layouts. Based on the obtained results, a human pass-by detection system is proposed and tested. The system achieves a detection rate of 100% in a controlled environment for 21 experiments. For a realistic corridor experiment, the system keeps its detection rate of 100% for 19 experiments.

3A1-R01 Extract Human Factors with Wearable Line-of-Sight Detection System(Wearable Robotics)

2014 ◽  
Vol 2014 (0) ◽  
pp. _3A1-R01_1-_3A1-R01_3
Author(s):  
Miho Ogawa ◽  
Masataka Ozawa ◽  
Kota Sampei ◽  
Carlos Cotes ◽  
Norihisa Miki
Keyword(s):  
Human Factors ◽  
Detection System ◽  
Line Of Sight ◽  
Wearable Robotics

scholarly journals Line of sight visibility analysis for foreign object debris detection system

2021 ◽  
Vol 1878 (1) ◽  
pp. 012006
Author(s):  
G Fizza ◽  
S M Idrus ◽  
F Iqbal ◽  
W H W Hassan ◽  
N Shibagaki ◽  
...  
Keyword(s):  
Detection System ◽  
Line Of Sight ◽  
Foreign Object ◽  
Visibility Analysis

2A1-G30 Wearable Line-of-Sight Detection System Using MEMS

2010 ◽  
Vol 2010 (0) ◽  
pp. _2A1-G30_1-_2A1-G30_2
Author(s):  
Akira OIKAWA ◽  
Takayuki MURO ◽  
Norihisa MIKI
Keyword(s):  
Detection System ◽  
Line Of Sight

scholarly journals MNM-P5-4 Wearable Line-of-sight Detection System Using MEMS

2010 ◽  
Vol 2010.2 (0) ◽  
pp. 103-104
Author(s):  
Akira Oikawa ◽  
Takayuki Muro ◽  
Norihisa Miki
Keyword(s):  
Detection System ◽  
Line Of Sight
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