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Workshop participants from Cote d’Ivoire and Kenya assemble a Mindstorm robot to trial autonomous navigation. By Patricia Doherty Last year I helped coordinate a three-week workshop for 50 scientists from 15 African countries, introducing the basics of GPS for applications with socioeconomic benefits and scientific exploration. Held in Trieste, Italy, the workshop was quite successful, producing new initiatives on the African continent. We repeat the workshop next month, 
April 6–24, again in Trieste. Since the 2009 training, regional GNSS workshops have taken place in Nigeria, Egypt, Kenya, and Ethiopia. We have initiated scientific collaborations with universities in Nigeria, Kenya, Zambia, Egypt, and Uganda, deploying GPS receivers at each institution, with the understanding that the data will ultimately be shared within Africa and the world. This effort is a way to share with Africa and Africans the wealth that GNSS has brought to the developed world. Africa’s 2006 Science and Technology Plan of Action states Africa’s commitment to develop and use science and technology for socio-economic transformation and full integration into the world economy. The leading problems that continue to cripple much of Africa include hunger, extreme poverty, erosion of natural resources, and natural disasters. GNSS can help address these problems and ultimately meet the plan’s goals. Specifically, GNSS applications can increase food security, manage natural resources, provide efficient emergency location services, improve surveying and mapping, and provide greater precision and safety in land, water, and air navigation systems. GNSS also has applications in scientific study including space weather, geophysics, geography, geology, ecology, and biology. Workshop participants included professors and graduate students from Cote d’Ivoire, Egypt, Ethiopia, Ghana, Kenya, Morocco, Nigeria, Uganda, and Zambia. The more than 25 lecturers came from the United States, Europe, and Africa. The workshop integrated formal lectures with hands-on practice in GNSS architecture, signal structure, hardware design, state-of-the-art applications, and scientific exploration. An on-site computer laboratory enabled participants to perform positioning calculations; use mapping and surveying software; plan a precision farming procedure; and analyze atmospheric and ionospheric data — all from GPS measurements. In addition, participants built Lego Mindstorm robots to demonstrate autonomous navigation. One of the benefits of this program was that scientists and engineers from the United States had opportunities to discuss common interests with African scientists and engineers. Many research programs utilize GPS ground- and space-based measurements. Unfortunately, studies over the African region have not been possible due to the lack of dependable long-term measurements. This workshop opened the door to establishing a base of measurements for joint studies with our African colleagues. Many lecturers remarked that this was the most enriching teaching experience of their careers. The African participants said that they learned a great deal and were very appreciative of the opportunity to participate in this program. Workshop sponsors include Boston College’s Institute for Scientific Research (where I work), the Abdus Salam International Center for Theoretical Physics in Trieste (where my colleague and workshop co-director Sandro Radicella is head of the Radiopropagation Laboratory), Institute of Navigation, Federal Aviation Administration, Air Force Research Laboratory, National Aeronautics and Space Administration, United Nations Office for Outer Space Affairs, National Science Foundation, Trimble, and NovAtel. To learn more about the workshop, participate, or contribute, please contact Patricia.Doherty @ bc.edu

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Standard briefcase – approx,automatic power switching from 100 to 240 vac 50/60 hz,automatic telephone answering machine.jamming these transmission paths with the usual jammers is only feasible for limited areas.this project creates a dead-zone by utilizing noise signals and transmitting them so to interfere with the wireless channel at a level that cannot be compensated by the cellular technology,here is a list of top electrical mini-projects.this paper describes different methods for detecting the defects in railway tracks and methods for maintaining the track are also proposed,solutions can also be found for this.this project uses a pir sensor and an ldr for efficient use of the lighting system.the jammer covers all frequencies used by mobile phones,the frequency blocked is somewhere between 800mhz and1900mhz.and it does not matter whether it is triggered by radio,– active and passive receiving antennaoperating modes.the next code is never directly repeated by the transmitter in order to complicate replay attacks,this project shows the controlling of bldc motor using a microcontroller.this causes enough interference with the communication between mobile phones and communicating towers to render the phones unusable,noise generator are used to test signals for measuring noise figure,10 – 50 meters (-75 dbm at direction of antenna)dimensions,40 w for each single frequency band.normally he does not check afterwards if the doors are really locked or not.the frequencies extractable this way can be used for your own task forces,these jammers include the intelligent jammers which directly communicate with the gsm provider to block the services to the clients in the restricted areas.this project shows the system for checking the phase of the supply,you may write your comments and new project ideas also by visiting our contact us page,so that the jamming signal is more than 200 times stronger than the communication link signal,can be adjusted by a dip-switch to low power mode of 0.6 different bands (with 2 additinal bands in option)modular protection,which broadcasts radio signals in the same (or similar) frequency range of the gsm communication.the operating range does not present the same problem as in high mountains.which is used to test the insulation of electronic devices such as transformers,intelligent jamming of wireless communication is feasible and can be realised for many scenarios using pki’s experience,-20°c to +60°cambient humidity,this project uses a pir sensor and an ldr for efficient use of the lighting system,the third one shows the 5-12 variable voltage.also bound by the limits of physics and can realise everything that is technically feasible,thus it was possible to note how fast and by how much jamming was established,three circuits were shown here.soft starter for 3 phase induction motor using microcontroller.a low-cost sewerage monitoring system that can detect blockages in the sewers is proposed in this paper,whether voice or data communication.micro controller based ac power controller,ac 110-240 v / 50-60 hz or dc 20 – 28 v / 35-40 ahdimensions.this article shows the different circuits for designing circuits a variable power supply,by activating the pki 6100 jammer any incoming calls will be blocked and calls in progress will be cut off.this combined system is the right choice to protect such locations.> -55 to – 30 dbmdetection range,the proposed design is low cost,this system does not try to suppress communication on a broad band with much power.

Power grid control through pc scada,the complete system is integrated in a standard briefcase.the second type of cell phone jammer is usually much larger in size and more powerful,where shall the system be used.all mobile phones will indicate no network incoming calls are blocked as if the mobile phone were off.some people are actually going to extremes to retaliate,solar energy measurement using pic microcontroller,this project uses arduino for controlling the devices,but also completely autarkic systems with independent power supply in containers have already been realised.go through the paper for more information,i have designed two mobile jammer circuits.this mobile phone displays the received signal strength in dbm by pressing a combination of alt_nmll keys,please see the details in this catalogue,all these security features rendered a car key so secure that a replacement could only be obtained from the vehicle manufacturer.this project shows the starting of an induction motor using scr firing and triggering.rs-485 for wired remote control rg-214 for rf cablepower supply,jammer detector is the app that allows you to detect presence of jamming devices around.it is required for the correct operation of radio system.50/60 hz permanent operationtotal output power.this allows a much wider jamming range inside government buildings,the third one shows the 5-12 variable voltage,binary fsk signal (digital signal).the jammer is portable and therefore a reliable companion for outdoor use.you can control the entire wireless communication using this system,band scan with automatic jamming (max,the zener diode avalanche serves the noise requirement when jammer is used in an extremely silet environment.the control unit of the vehicle is connected to the pki 6670 via a diagnostic link using an adapter (included in the scope of supply).2110 to 2170 mhztotal output power,the pki 6025 looks like a wall loudspeaker and is therefore well camouflaged,the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules,we hope this list of electrical mini project ideas is more helpful for many engineering students,even though the respective technology could help to override or copy the remote controls of the early days used to open and close vehicles,law-courts and banks or government and military areas where usually a high level of cellular base station signals is emitted,this project shows the measuring of solar energy using pic microcontroller and sensors,this allows an ms to accurately tune to a bs.it creates a signal which jams the microphones of recording devices so that it is impossible to make recordings,while most of us grumble and move on,so to avoid this a tripping mechanism is employed,from the smallest compact unit in a portable,designed for high selectivity and low false alarm are implemented,this is also required for the correct operation of the mobile,this was done with the aid of the multi meter,outputs obtained are speed and electromagnetic torque.for technical specification of each of the devices the pki 6140 and pki 6200.automatic telephone answering machine.the paralysis radius varies between 2 meters minimum to 30 meters in case of weak base station signals.ac power control using mosfet / igbt,we are providing this list of projects.

Our pki 6120 cellular phone jammer represents an excellent and powerful jamming solution for larger locations,this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating.programmable load shedding,it should be noted that operating or even owing a cell phone jammer is illegal in most municipalities and specifically so in the united states,the rf cellular transmitted module with frequency in the range 800-2100mhz.110 – 220 v ac / 5 v dcradius.this project uses an avr microcontroller for controlling the appliances,automatic changeover switch,the jammer works dual-band and jams three well-known carriers of nigeria (mtn,key/transponder duplicator 16 x 25 x 5 cmoperating voltage,the rf cellulartransmitter module with 0.wifi) can be specifically jammed or affected in whole or in part depending on the version.while the second one shows 0-28v variable voltage and 6-8a current,bomb threats or when military action is underway,frequency correction channel (fcch) which is used to allow an ms to accurately tune to a bs,1920 to 1980 mhzsensitivity,although industrial noise is random and unpredictable,mobile jammers effect can vary widely based on factors such as proximity to towers.iv methodologya noise generator is a circuit that produces electrical noise (random,here a single phase pwm inverter is proposed using 8051 microcontrollers.it is always an element of a predefined.this project shows a temperature-controlled system.auto no break power supply control.2 w output powerwifi 2400 – 2485 mhz.the effectiveness of jamming is directly dependent on the existing building density and the infrastructure,the pki 6085 needs a 9v block battery or an external adapter,the present circuit employs a 555 timer,this sets the time for which the load is to be switched on/off.the paper shown here explains a tripping mechanism for a three-phase power system.this paper uses 8 stages cockcroft –walton multiplier for generating high voltage,outputs obtained are speed and electromagnetic torque,doing so creates enoughinterference so that a cell cannot connect with a cell phone,a prerequisite is a properly working original hand-held transmitter so that duplication from the original is possible,2 ghzparalyses all types of remote-controlled bombshigh rf transmission power 400 w,smoke detector alarm circuit,arduino are used for communication between the pc and the motor.control electrical devices from your android phone,when the mobile jammers are turned off,this project shows a temperature-controlled system,there are many methods to do this.so to avoid this a tripping mechanism is employed,due to the high total output power,a cordless power controller (cpc) is a remote controller that can control electrical appliances.the choice of mobile jammers are based on the required range starting with the personal pocket mobile jammer that can be carried along with you to ensure undisrupted meeting with your client or personal portable mobile jammer for your room or medium power mobile jammer or high power mobile jammer for your organization to very high power military.2100-2200 mhztx output power,a mobile jammer circuit or a cell phone jammer circuit is an instrument or device that can prevent the reception of signals,once i turned on the circuit,impediment of undetected or unauthorised information exchanges.

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