Mobile Computing Hawk UNMANNED hELICOPTER

8/13/2019 Mobile Computing Hawk UNMANNED hELICOPTER

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Amrita KarSem:-

Roll no:-

College Name:-

Presented by:-

Date:-


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Table of ContentsIntroduction

Why mobile computing?

Mobile Computing Device

Portability Issues

Wireless Localisation

Issues

Prototype of HAWK

Example Flight/Experiment

Future Aspects

Conclusion


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Introduction:-

Mobile Computing

is a term used to

describe technologiesthat enable people

to access network

services anyplace,anytime, and anywhere.


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Why Mobile Computing ?

Devices are mobile

People are mobil

e Mobile Computing = Mobile (Moving)+Computing ( using

computer)

Today, technological advances areshaping a new computing

environment where the user is

free from the need to work at a

specific location, and is evenenabled to work while on the

move.

This new paradigm is often called

MOBILE COMPUTING.


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Mobile Computing devices:-

Laptop

Palm-top

GPS

Mobilephone

Modem

Laptop

Palm-top

Global positioningsystem

Mobile phone


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Mobile Computing:-

Tablet PC

Laptop Computer

Mp3 Players

Portable TV

Wireless mobile Computing

Cellular phone

Wireless Tablet PC

Wireless Laptops

Smartphone

Desktop Computer

Landline Phone

Cable Television

Free-to-air television

Commercial Radio

Mobile

Fixed

Wired WirelessNetworks

Communicationd

evices


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Portability ssuesBATTERIES- power source

Weight, volume determine lifetimePower consumption: CV2

Other Batterytypes:

Lead AcidNickel Zinc

RechargeableAlkalineManganese

Zinc Air

Lighter

Smaller


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Third Party Localization

Localization via received signal strength (RSS)

Broad applications in public safety, cyber forensics, network

management


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Problem Definition and Basic Idea

Problem Definition: How to

locate a wireless target device

by HAWK

Basic idea:Use the location

where HAWK senses the

strongest signal strength

sending from target device asthe location of the target


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Issues

1. What is the flight route for the helicopter?

2. How to ensure a target will be detected?

3. How to implement reliable waypoints?

4. What is target location?


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1. What is the flight route for the helicopter?

Reasons:

It is a space-filling curve

A level n Moore curve

covers all unit squares

with the shortest distance

It begins and ends at thesame point

Moore space filling curve can be used as a flight route


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Proper level: flight speed v,square side width d,

transmission radius R and

transmission interval t

Principle 1: During the flight in a unit square, HAWK senses at

least one packet from target in that unit square

Principle 2: To save battery power, a proper level of Moore

curve is critical while satisfying Principle 1

2

2 2

2

n

n

d R

dvt

(1)

2. How to ensure a target will be detected?


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0( ) ( )tp iu k e t k e t dt

Moore curve is a direct application of the waypointsfunctionality

Factors such as wind may affect helicopters movement during

flight

Three parameters of the mini helicopter, pitch, roll, and yaw

can be adjusted

PI-control law is written as:

Proportional Integral

3. How to implement reliable waypoints?

(2)


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We use the location where

the strongest RSS is sensed as

the target devices location

A target device may belocated in the unit square

where the strongest RSS from

the target is sensed or one of

its eight surrounding unitsquares

4. Whatistargetlocation?


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Prototype of HAWK

Helicopter: Draganflyer X6 with GPS Wireless sniffer: Nokia N900

Handheld controller: emergency controller

Software controller on a laptop: control takeoff and flight and receive

telemetry including GPS from helicopter

Locator on the laptop: show route on Google map in real time, anddownload data from N900 for location calculation

Software

controller on

laptop

Manual

controller


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ExampleFlight

Mini helicopter, withsniffer, flied over

buildings

Sniffer ran Kismet

HAWK identified Access

Points

Google Map showed

flight route and APs

locations


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RealWorldExperiments

Experiments to locate 12

smart phones on track field

One Nokia N900 with Kismet

Warwalking on the tracks and three

different flight routes

Result:

Five meters localization

accuracy on average for a

level 3 Moore curve


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Comparison of localization strategy for accuracy


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Related Work

Disadvantages of W.A.S.P (Wi-Fi Aerial Surveillance Platform):

A mini airplane that has to fly

at a relatively high speed in

order to float in the air

Limited localization and

surveillance capability

because W.A.S.P cannot

satisfy Formula (1)


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Advantages and Disadvantages

Advantages

Relatively low cost whencompared to air operationsusing a full sized manned

helicopter. Small in size so cannot be

easily noticed

Easy to fly and maintain

Wide range application

Durable and safe

Incredible Aerial Photos andVideos

Disadvatages

Battery life of 15 minutes

flight.

Raw images which are oflarge file size. Raw images

are typically 6 times larger

than an equivalent JPEG

which reduces the no of pic

that can be stored in one

memory card.


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Future Aspects

Can be used for detecting terrorist hiding

spots.

Can be used by police department to detect

theft cars and its location

Can be used to track your friends in a specific

geographic location area.


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Conclusion

Developed a fully functional Mini Helicopter-based AerialWireless Kit (HAWK)

Proposed a suite of theories for HAWK conducting accurate

localization

Moore curve based flight route, considering flight

velocity, target transmission interval and target

transmission range

Customized PI control laws for reliable navigation

Conducted extensive real-world experiments to validate the

feasibility of HAWK for localization


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References

For the video of the HAWK in action :-

http://www.youtube.com/watch?v=ju86xnHbEq0.

Draganfly Innovations, Innovative UAV Aircraft and Aerial Video Systems,

http://www.draganfly.com, 2010 .

http://www.draganfly.com/uav-helicopter/draganflyer-x6a/ http://www.draganfly.com/news/2009/10/

Nokia N900, http://en.wikipedia.org/wiki/Nokia_N900.

IEEE transaction on mobile computing

http://www.computer.org/cms/Computer.org/transactions/tmc/pdfs/ttm

2014020287.pdf Mobile Computing, http://en.wikipedia.org/wiki/Mobile_computing

Kismet, http://www.kismetwireless.net/, 2011


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Mobile Computing Hawk UNMANNED hELICOPTER