presenter: benmll.csie.ntu.edu.tw/present_slides/spintrack.pdf · presenter: ben ben (田知本)...
TRANSCRIPT
Presenter: Ben
田 知本Ben (田 知本)
Full-time research assistant
2000 2004 2006 20072008
BS (b89) MS (r93) 當兵
2000 2004 2006 2007
h i i k bWhat is SpinTrack about?
What are we planning to do this summer?
What skills does SpinTrack need?
courtesy from http://www.spintrack.com
i d l li i f lAn indoor localization system for accurately tracking stationary targets
High accuracy, low-costHigh accuracy, low cost
Single stationary target (sender) multipleSingle stationary target (sender), multiple spinning receivers
I d l ti b d iIndoor location-based services
Healthcare Security Warehouse
i i i d l li i h iExisting indoor localization techniquesUWBUltrasoundWiFi UW
WiFi
WiFi UWB
Ultrasound
Technologies Accuracy PropertiesUWB 15 cm • Specialized hardwareUWB 15 cm • Specialized hardware
Ultrasound 15 cm • Short rangeN li f i ht blUltrasound 15 cm • Non-line of sight problem
WiFi 300~500 cm • Offline training
• Low cost? cm range
• Low cost• Radio• No offline trainingg
SS
XDoppler Doppler AngulationAngulation
X
LocalizationLocalizationR
The location of XThe location of XS
S
fX
fDoppler shift
vproject
S v
vproject
S v
-30Hz
X
30Hzv
S
y0Hz 0Hz
requ
ency
timefr
+30Hz Δf (t) = ?Δf (t) = ?
y
X
fX
αrS α
xr
θ(t) = ωt+φ
quen
cytime
freq
y
XX
α RRS
xβ
SS
XX
R
S
S
ki i l lTracking single target only
l l i kImplement & Evaluate SpinTrack
Come up a method for tracking multiple targetstargets
Implement & Evaluate the multi targetImplement & Evaluate the multi-target tracking system
Produce a conference paper
i hBasic math
Basic English reading/writing
nesC programming (optional)t t l th dto control the sensor node