FYP Presentation Format 3

7/30/2019 FYP Presentation Format 3

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Department o f Electronic Engineering

Design and Implementationof RCIED Jamming System

Muhammad Usman Saleem

09-ECT-28

Hassan Bin Qasim

09-ECT-43

Muhammad Waqas Qadir09-ECT-45

Supervised by:

Engr.Ahmad Umar Niazi


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Problem Statement

The radio controlled improvised explosive device (RCIED) is one of

the deadliest threats to military personnel supporting the global war

on terrorism and due to its success is expected to play a major role

as a weapon of choice in future insurgencies. To mitigate the risk

of a RCIED attack, electronic jamming devices are utilizedto interrupt the communications between a remote control

and the RCIED trigger.

Design, implementation, and testing of common RCIED Frequency

Bands ,RCIED four-band jammer. This jammer works at CDMA870-

880, GSM930-960, DCS1805-1850 and 3G 2110-2170 MHz


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Aims & Objectives

Proactive communication signal jamming between receiver and

transmitter using denial of services

Our proposed frequency band was 25-3000Mhz,due to inavailability

of wide band VCO ,We have been limited to some common IED

frequency bands GSM,CDMA,DCS and 3G This jammer works at CDMA870-880, GSM930-960; DCS1805-

1850, 3G 2110-2170 MHz

Jamming Radius about 2- 20 m



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Literature Review

RCIED jamming devices were first developed and used by military.

This interest Comes from the fundamental objective of denying the

successful transport of information from the sender (tactical

commanders) to the receiver (the army personnel), and vice-versa

The use of the IED has grown to unmatched numbers in use againstmilitary forces, religious places and public gathering. We know there

are lot of IEDs blasts in Karachi, Quetta and Peshawar which effects

the general public, VIP convey and military personal

The device IED is constructed so that the receiver is connected to

an electrical firing circuit. The transmitted signal causes the receiverto initiate the IED. Usually the receiver triggers the initiator, but it

may also be used to remotely arm the device to be initiated by other

means.



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Literature Review

The open nature of wireless radio transmissions makes them

particularly vulnerable to communication jamming Denial-of-Service

(DOS) attacks (the technique we used).

The aim of these devices is to prevent devices from exchanging any

useful information by interfering with their communication. Possiblecommunication jamming attacks include signal annihilation,

modification and jamming as well as the insertion of forged or

replayed signals.

The trigger of an RCIED is a radio transmitter and receiver link. A

few examples are car alarms, wireless door bells, cell phones,pagers and walkie-talkies.



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Literature Review

DOS. In this technique, the device transmits a noise signal at the

same operating frequency of the mobile phone in order to decrease

the signal-to-noise ratio (SNR) of the communication device (GSM)

under its minimum value.[2]

Swept Spectrum Jamming in which the carrier frequency is notnoise modulated but swept over the frequency ranges.[1]

If uplink processing at the base station can be grounded on the

availability of direct information about the concerned uplink channel

(by the mean of a training sequence or blind methods), downlink

processing encounters more severe difficulties: no information aboutthe downlink channel is available at the base station prior to data

transmission so we usually jam the downlink frequencies one can

also elaborate it as less power needed for jamming downlink.



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ANALYSIS


Uplink Downlink

GSM 890-915MHZ 935-960MHZ

Uplink Downlink

DCS 1850-1910MHZ 1930-1990MHZ

Uplink Downlink

CDMA 824-849MHZ 869-894MHZ

Uplink Downlink

3G 1980-2010MHZ 2170-2200MHZ

GSM,DCS,CDMA and 3G Frequency bands


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ANALYSIS

In our project, we need to get the duty cycle (D.C.)

equal to 50% which means the time needed for charging

equals the discharging time. This can be done by using

Ra=Rb

Sweep rate will be 4.8 KHz. Ra=Rb=1K Ohm and C=0.101 F



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ANALYSIS

There is no single wideband VCO which will cover our desired

frequency band so we used two VCOs one for GSM, DCS and

CDMA with frequency Range 800-2000 MHz model number

0897/1747 RY57 with 7.5 dbm manufactured by Fujitsu and for 3G

we used 2074S6 with output 3dbm manufactured by Delta Most cellular devices have a SNR handling capability of around

12dB. A very good device might have a value of 9dB, although it is

highly unlikely. To ensure jamming of these devices, we need to

reduce the SNR of the carrier signal to below the 9dB level.

J = -24dBm (Power of the jamming signal) Since SNRmin = S/JLp=32.45+20 log (f*D)

Jt=58-24=34 dbm



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ANALYSIS

Output power of our VCOs is 7.5+3 dbm which needs to be

amplified upto 37 dbm to meet required signal. The power output of

the amplifier is 36 dbm hence it fulfills the requirement of generated

signal. [2]

Output power of power amplifier = 5wattPout = 10 log 5

Pout = 6.98 db

Pout in dbm = 6.98+30 = 37 dbm

The received signal level for the desired signal is

S=ERPs-32-20 log (F)-20 log (ds)+Grs



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ANALYSIS

The jamming to signal ratio (J/S) is the difference between these two

numbers (JS) in dB [3]

J/S=ERPj-ERPs-20 log (dj)+20 log (ds)+Grj-Grs

Comparison between distance and attenuation



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ANALYSIS

Cost

We have chosen ICs on the basis of same supply voltage, surface

mount which will reduce size and more powerful and having same

noise properties

Hitachi Power Amplifier IC PF0114B 5,500 Rs

VCO IC 0897/1747 RY57 3500 Rs

VCO IC 2074S6 Delta 1500 Rs

Mosfet Tni 112E 150 Rs

555 Timer 10 RsZener Diode 25 Rs

VCO Evaluation PCBs 10,000 Rs

Copper PCB 250 Rs



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IMPLEMENTATION

System Diagram Simulation in AWR 2000



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IMPLEMENTATION

Phase one: studying the RCIED jamming to find the best jamming

technique (spoofing, shielding, dos, spectrum distortion),

establishing the system design and selecting suitable components.

Phase two: buying all the needed components, drawing the overall

schematics, fabricating the PCB layout, assembling the devices,performing some measurements and finally testing the jammer.

Department of Electrical Engineering


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IMPLEMENTATION

Circuit Diagram on Proteus 8.0 PCB Layout on Proteus 8.0



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IMPLEMENTATION

Department of Electrical Engineering

Jamming System in working


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RESULTS

According to required task we have jammed the 4-bands GSM,

DCS, CDMA, and 3G. GSM and DCS signals are tested on mobile

phones, CDMA is tested on spectrum analyzer and 3G is checked in

3G EVO with range 2-25meter


Before GSM Jamming After GSM Jamming


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CONCLUSION

This project includes effective multichannel jamming for GSM, DCS,

CDMA and 3G bands. Which are major cause of IED attacks as per

according to survey, its algorithm is satisfactory in prevention from

RCIED attacks .We used denial of services instead of other

techniques as its more reliable, prevents from complexity and itscheap to implement in blocking the prescribed bands .

In future we can improve the jamming system output power, range

of jamming signal .We can jam more common IED bands 25Mhz to

3Ghz in multi channel design which will be reliable and effective .



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Utilization of Research Results

The radio controlled improvised explosive device (RCIED) is one of

the deadliest threats to military personnel supporting the global war

on terrorism and due to its success is expected to play a major role

as a weapon of choice in future insurgencies. To mitigate the risk

of a RCIED attack, electronic jamming devices are utilizedto interrupt the communications between a remote control

and the RCIED trigger

VIP Convoy protection

Military application



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References

[1] Homeland Security Strategies GB, Homeland security

homepage available on-line at http://www.bombjammer.com, 2010

[2] Richard A Poisel, Introduction to Communication Electronic

Warfare Systems, Artech House,Boston,London 2002,ISBN-13:

978-1-59693-452-8. [3] David L. Adamy ,Introduction to Electronic Warfare, Modeling

and Simulation, Artech House ,Boston ,London, 2002, ISBN1-

58053-495-3.

http://www.bombjammer.com/http://www.bombjammer.com/

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