Presenter: Benmll.csie.ntu.edu.tw/present_slides/spintrack.pdf · Presenter: Ben Ben (田知本)...

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