Square Error(RMSE)
خطای مربع میانگین ریشه
Time Division Multiple Access(TDMA)
دسترسی چنذگاته با تقسیم زمانی
Buoy
راهنماهای شناور موجود در سطح آب
Time Difference Of Arrivals(TDOA)
زمان متفاوت ورود
Time Of Arrival(TOA)
زمان ورود
Stationary
ساکن
Underwater Wireless Sensor Networks(UWSNs)
شبکه های حسگر بی سیم زیرآب
Pseudo code
شبه برنامه
Refraction
شکست
Accuracy
صحت
Design Expriment
طراحی آزمایش
Underwater Gateway
گذرگاه های زیرآب
Underwater Sensor
گره حسگر بی سیم زیرآب
Incorporate
متحد
Interactive multiple model(IMM)
مدل چندگانه تعاملی
Linear kinematic model
مدل خطی حرکت شناسی
Cramér–Rao Lower Bounds
مرزهای پایین کرامر رائو
Localization
مکان یابی
Underwater Modem
مودم صوتی زیرآب
Position
موقعیت
Mean
میانگین
Mean Square Error(MSE)
میانگین مربعات خطا
Unbiased
ناسوگیرانه
Passive node
نود کنش پذیر
Anchor node
نود مرجع
Inaccurate anchor
نود مرجع نادرست
Reference Broadcast Synchronization
(RBS)
یک نوع پروتکل همزمانساری
Flooding Time Synchronization Protocol(FTSP)
یک نوع پروتکل همزمانسازی
Timing-sync Protocol for Sensor Networks (TPSN)
یک نوع پروتکل همزمانسازی
Abstract
Underwater acoustic localization and synchronization are the key elements in most underwater communication applications. Although these two elements have very close relationships and share many aspects in common, they are traditionally treated separately. Furthermore, the accuracy of the time synchronization is a central issue in time-based localization approaches. Based on the close relationships between time synchronization and localization, it is natural to explore the possibility of formulating them into a unified framework and solve the two parameters at the same time.
In this thesis a new method to joint localization and synchronization for underwater wireless sensor networks (UWSNs) is proposed. It consists of five important phases such as Using TOA for initial location, Quantization of Node Movements, Estimating the Clock Skews and Offsets, Stratification compensation, Localization with Iterative Refinement. We consider the attribute of sound wave (i.e. undulation travelling). Due to this attribute, stratification effect is used to compensate the bias in range estimates. Mobility of nodes is also considered in this solution. Persian Gulf environmental is selected as the case study for this research. Simulation results show that the proposed method achieves accurate localization and time-synchronization and is working close to Cramer Rao Lower Bound (CRLB).
Keywords: Localization, stratification effect, synchronization, underwater wireless sensor networks (UWSNs).
IN THE NAME OF GOD
PROPOSING A NEW METHOD FOR SIMULTANEOUS SYNCHRONIZATION AND LOCALIZATION FOR UNDERWATER WIRELESS SENSOR NETWORKS
BY
ZAHRA MOOSAVI
THESIS
SUBMITTED TO THE
SCHOOL OF COMPUTER ENGINEERING
AND INFORMATION TECHNOLOGY
SHIRAZ UNIVERSITY OF TECHNOLOGY
IN PARTIAL
FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE (M.Sc.)
in
IT ENGINEERING
Thesis committee members:
Jvidan Reza., Ph.D., Assistant Professor of Information Technology Engineering Department (supervisor) ………………
Kharazmi Mohammad Rafi., M.Phil., Instructor of Information Technology Engineering Department (Advisor) ……………..
Keshtgari Manigeh., Ph.D., Assistant Professor of Information Technology Engineering Department (Referee) ………………
January 2015
Shiraz University of Technology
School of ComputerEngineering
And Information Technology
M.Sc. Thesis
Proposing a New Method for Simultaneous Synchronization and Localization for Underwater Wireless Sensor Networks (UWSNs)
BY
Zahra Moosavi
Supervisor
Reza Javidan Ph.D.
Advisor
Mohammad rafi Kharazmi M.Phil.
January-2015
1 Multipath
2 Time Division Multiple Access
3 Medium Access Control
4 Time Of Arrival
5 Time Difference Of Arrivals
6 accuracy
7 Quantization
8 Clock Skew
9 Clock offset
10 Stratification compensation
11 Cramer-Rao lower bound
12 Underwater Sensor
13 Underwater Modem
14 Autonomous Underwater Vehicle
15 2D
16 Underwater Gateway
17 Surface Station
18 Surface Sink
19 3D
20 Refraction
21 Multipath
22 Localization
23 Part per million
24 Relative ordering
25 Relative timing
26 drift
27 One Way
28 Anchor
29 Anchor Based
30 Ranging
31 Angle Of Arrival (AOA)
32 Received Signal Strenghth (RSS)
33 Gain
34 Range Bsed
35 Range Free
36 Multilateration
37 Trilateration
38 Angulation
39 Multipath fading
40 Hop Count
41 Area Based
42 Area Localization Schema
43 Beacon
44 Least Square
45 unbiased estimator
46 maximum likelihood (ML)
47 Score Function
48 Mean Square Error (MSE)
49 Cauchy-Schwarz inequality: E{XY }2 ≤ E{X}E{Y }
50 Total Least Squares
51 Overhead
52 inaccurate anchor
53 accurate
54 maximum likelihood estimator
55 generalized total least squares
56 line-of-sight
57 root mean square error
58 buoy
59 silent
60 Flooding mechanism
61 stationary
62 mobility
63 incorporate
64 Kalman filter
65 linear kinematic model
66 Passive node
67 Atomic Multilateration
68 Iterative Multilateration
69 Stratification Effect
اثر لایهبندی: به این نکته اشاره میکند که به دلیل تفاوت سرعت صوت در عمقهای مختلف محیط زیرآب، مسیر انتقال امواج صوتی در واقع به صورت کمانی میباشد نه یک خط مستقیم.
70 Propagation Delay
71 Interactive Multiple Model
72 Quantization
73 Stratification compensation
74 overhead
75 flowchart
76 time-slotted
77 Slot
78 Independent and identically distributed
79 inertial
80 position
81 location
82 least-squares
83 Stratification compensation
84 heuristic
85 Weighted Least Square (WLS)
86 unbiased
87 design experiment
88 mean
89 design experiment
90 Knot
91 Pseudocode
92 refinement iterative
93 tracking
—————
————————————————————
—————
————————————————————
‌ه
1
‌ی
ارائه یک روش جدید برای مکانیابی و …
60
ارائه یک روش جدید برای مکانیابی و همزمانسازی …
94
Error! Use the Home tab to apply عنوان to the text that you want to appear here.
ارائه یک روش جدید برای مکانیابی و همزمانسازی
توامان در شبکههای بیسیم زیرآب
100

مطلب مرتبط :   دانلود پایان نامه ارشد درموردآموزش و پرورش، استان مازندران، عملکرد کارکنان

Written by 

دیدگاهتان را بنویسید