2021/04/08
Partnership Council Affords Insight, Drama
By Alan Cameron
This year’s GPS Partnership Council provided among other highlights a discussion of the tensions between commercial off-the-shelf (COTS) receiver systems used in tactical combat operations versus official military GPS user equipment (MGUE), and an enthralling warfighters’ panel that revealed much of those COTS/MGUE dilemmas. The event, held May 1–2 in El Segundo, California, drew an enthusiastic and involved audience, including many GPS veterans. I was struck by the graying of the clan as well as the practiced and confident presentations of current civilian and military program staffs.
Keynote speaker Brig. Gen. Martin Whelan, Director of Requirements, Headquarters Air Force Space Command, emphasized that ideas for improvement of the system would be hard sells under current budget realities, but good ideas for lower cost would be welcome. Referring to the three segments — space, ground, and user — he recommended that the segments should talk with each other and challenge requirements. In effect, he implied that the separate segments could reduce overall costs, rationalize requirements, and cooperate better in optimizing the resilience and flexibility of the system, including — this is my interpretation — taking advantage of the “competitive” GNSSs to effect user satisfaction.
According to Whelan, resiliency of the space segment is a top priority; smaller satellites, hosted payloads, and net-centric designs were highlighted. He commented that multiple GNSSs should be employed in such a way that the user does not know the difference.
Regarding the upcoming budget, he told us that Department of Defense will be cut by 22 percent, the Air Force will drop 9 percent — but the AF space budget only 1.5 percent. A notable exception to the generally favorable overview was his comment that the MGUE segment, from a distance, looked uncoordinated. Much more along this line came up later during both days of the Council.
Widespread COTS. There was an air of defensiveness about the user segment, and many comments on both the success and the risks associated with the widespread use of COTS user equipment. We heard further commentary on the very infrequent use of SAASM keys, due to the difficulty of procedures to obtain and employ them, and due to the perception of very low risk of jamming and spoofing threats in current combat deployments.
A session on “The Future Military Receiver” enlisted two panels of government experts and contractors from Deere-NavCom, Garmin, IEC, Johns Hopkins Applied Physics Labs, Raytheon, and Rockwell-Collins. Although the unclassified nature of the presentations limited the level of detail, it clearly emerged that many tactical, in-combat deployments of COTS GPS receiver systems had occurred and continue to occur.
A video compared the jamming resistance of a Garmin receiver with that of approved GPS User equipment receivers. It showed a screen of the Garmin receiver losing satellites at greater distances from the jammer and losing lock at closer distances. Directorate employees and officers made several references to the risks from dependence upon COTS receivers, and related with considerable candor the difficulties with large, expensive, power-hungry MGUE, both mobile and platform-mounted, models of which were held up during the presentations — often to laughter from some in the audience.
More on this followed in Day Two’s dramatic warfighters’ panel, which many people felt was by itself worth the price of admission. These experienced users of GPS under fire — from Coast Guard search and rescue to Air Force forward controllers calling in air strikes within range of small-arms fire — related direct personal experience in a broad array of critical applications. They clearly knew how to use COTS equipment to good advantage and described the operational protocols developed from hard and sometimes painful experience.
Manipulation of multiple screens in a heavy device, which requires initialization or synchronization before dismounting, was often simply not an option. Translation of such experience into qualified requirements is a major challenge for the Air Force and Army. Overdependence on the anecdotal but very valid combat experiences would weaken a design against an enemy with even rudimentary jamming and spoofing capability.
An astute questioner asked “Have you seen any evidence that the enemy (in Afghanistan) has changed tactics because of our technology?”
The answer came “Not yet,” with a comment that the enemy’s early warning systems are very sophisticated and the target of a mission to capture a high-value individual (HVI) frequently knows that such a mission is underway; his support network spirits him away and attacks the mission with the advantage of surprise denied to our forces, abetted by the advantage of favorable terrain and numbers accruing to the enemy.
The Puck. The Army-led MGUE program status was described as being at technology readiness level (TRL) 6.0; the request for proposals was released on April 16. The key to the success across platforms of this “system of systems” was said to be the Common GPS Module (CGM), also referred to as the Puck. This module is M, P, and C/A code-capable and SAASM-capable but has flexible interfaces and “emulates commercial.” The module itself is a system-on-chip (SoC) that can be integrated across many platforms. Depending upon the level of integration employed, it can be as small as chips found in smartphones or somewhat larger.
The program schedule was defended as having only been funded two years ago and having very complex security and platform interfaces. This program presentation drew a large number of questions and commentary from the audience, much of it politely skeptical and showing impatience with the bureaucratic aspects of the program. Well-informed former military field-grade officers in the audience questioned its real availability. The answer that it would be available in quantity sometime in 2017 did not please the questioners.
In short, procurement regulations appeared to be the highest barrier to a rapid, flexible program for a net-centric, open-architecture system development.
Currently, the circuit boards for the MGUE are classified secret, but it is hoped to have these at a confidential or unclassified level for deployment by handling the encryption exclusively in software. The leader of this presentation indicated that software receivers were the ideal but were not available, so reduction in size, power consumption, and complexity in hardware was the goal.
Trumping Military. One almost nostalgic comment hearkened back to the time when military systems were regarded as the height of technological excellence, whereas it is now generally perceived that commercial systems trump the military in sophistication. Garmin claimed to have developed SAASM receivers in the lab but found little interest from business leaders at that time.
The CEO of Mayflower Communications, which makes and sells miniaturized SAASM receivers, pointed out that anybody could make a SAASM receiver employing a Sandia crypto-chip approved by the U.S. National Security Agency (NSA) but pointed out, as did several others, that the availability of certifications and authorizations was very limited, and that volume drove cost. Implicitly, NSA’s requirements and protocols got blamed for the limited distribution and use of SAASM receivers.
Day Two
The second day of the GPS Partnership Council comprised The Nation and The Warfighter. In the latter group came an outline of the Army’s COTS vision and — the hit of the entire conference — the Warfighter panel with a keynote introduction by a USAF colonel warrior now at the GPS Directorate.
The Nation. Tony Russo, director of the National Coordination Office for Space-Based Positioning, Navigation, and Timing, disabused those who thought that the apparent demise of the LightSquared threat had eliminated that subject from his agendas; he still deals with it often. He provided entertaining and informative examples of non-obvious and valuable applications of GPS, from assessing rugby players’ game performance through detection of clandestine underground nuclear tests to a social application of matching available part-time and temporary workers with jobs when labor demand surges and a roster shows where the closest qualified candidates are.
John Merrill of the Department of Homeland Security (DHS) identified 18 critical infrastructures that depend upon GPS integrity and showed the cascading effect of taking out sites like SCADA (Supervisory Control and Data Acquisition) systems. He related a threat-illustrative story of a DHS agent who required constant contact via his agency smart phone but who could not get reception while attending mass in church. The pastor later and very proudly showed him the mobile phone jammer in the sacristy; he had given up on asking parishioners to turn off their cell phones off during services.
James Miller of the National Aeronautics and Space administration noted that only 5 percent of space missions lie outside the GPS coverage envelope (3,000 kilometers to geostationary altitude of 35,800 kilometers is the space service volume). Reducing the burden on spacecraft tracking networks is a highly profitable application for GPS.
Warfighters Panel. These real-life experiences from combat and other vital operations could easily justify an entire article of their own. The following examples will illustrate the life-saving force multiplication of GPS, particularly the ubiquitous civil GPS technology in the current combat environment.
• An Air Force Special Operations Major described a mission to snatch an HVI, giving great detail on battlefield terrain, combat conditions, and how he worked between a COTS GPS receiver and a COTS handheld computer with Google Earth-like facilities to bring JDAMs (GPS-equipped smart munitions) onto an ambush mounted by defenders of the HVI, who were alerted to the raid by their extensive and sophisticated early-warning network consisting of sympathizers with cell phones. His description of the heroics of individual forward controllers, their injuries and fatalities, and the symbiosis of man and machine in a relatively benign electromagnetic interference but relatively malign electromagnetic propagation environment, and overtly and covertly hostile indigenous population, was dramatic and compelling.
Clearly, unsophisticated and easily-available high-power jammers rapidly alter such situations to reduce our technological advantages. Also clear was the need to design user equipment, not just to reject interference but to minimize time and the inevitable ambiguities in actual combat situations.
• A Coast Guard lieutenant described the search-and-rescue missions he flies out of local airports to Pacific Ocean sites. Again, COTS equipment, aided by the near-ubiquity of commercial GPS equipment, along with VHF marine radio on boats and ships, enhances these mission results over those flown with standard USCG-issued navigation equipment.
• An Air Force tanker pilot major now attached to the GPS Directorate described three personal experiences. He once had to ask his boom operator to retrieve the Garmin receiver issued in the survival kit in order to navigate the tanker for rendezvous with tactical aircraft needing fuel when the tanker’s standard equipment failed.
When tasked to fly into an airport in Afghanistan with unreliable navaids, under suddenly occurring zero-zero conditions, the onboard GPS enabled him to land safely.
In a third instance in Iraq, he observed a downed airman being approached by gunmen. The gunmen with AK-47s were being targeted by drone operators. The major was able to discern that these gunmen were friendly forces moving to rescue the downed airman and avert a friendly-fire disaster. The downed airman’s ability to send his exact coordinates were key to the ability of the observer to get close enough to direct rescue efforts and to avoid a fatal error.
• A Navy surface warfare lieutenant commander and a CWO Riverine or small boat skipper cited instances in which GPS was essential to missions and ways in which user equipment design could improve their operations — for example, by making it float.
All the veterans repeated, during or after their accounts of ways in which GPS saved lives or enabled missions, “thank you for what you do,” addressed to the audience, the presenters, and their leaders. Going into denied territory places a high premium on user friendliness, battery life, robustness, size, and weight. In the future, inevitably, jam and spoof resistance will be an object of gratitude, as well.
Final Review. We all know these things, intuitively and by doctrine, but hearing reports from people in harm’s way or retrieving comrades from harm’s way was a great addition to the usual program and technology descriptions by the development teams.
I was particularly impressed with the very articulate, sophisticated, and focused presentations of these combat veterans. It is highly incumbent on the industry and the government GNSS leaders to translate these experiences into design requirements quickly, so that future systems are less dependent on individual ingenuity and on commercial gap-fillers.
Much of this progress depends on truly incorporating the applications focus of commercial product development and on use of other GNSS systems for robustness, flexibility, and affordability — often quoted as mission goals by the leaders of this enterprise.
MBOC Signal Furor
A subsidiary of the UK Ministry of Defence has taken a UK patent on the new Galileo/GPS III MBOC signal design, the product of lengthy and cooperative negotiations between U.S. and European scientists. The patent, in the names of two UK engineers who participated in the project, is being used by a legal firm to demand royalty fees from receiver manufacturers, causing considerable controversy.
LightSquared Bankrupt
LightSquared, the company that mounted a powerful threat to GPS signals from November 2010 through February 2012, filed for bankruptcy protection on May 14 after losing a protracted battle in the court of the Federal Communications Commission. The war is not over, however. Exploding sprectrum demand for mobile data use makes it likely that future challenges to GPS and GNSS spectrum will emerge.
Compass Muscling Up
Two mid-Earth orbit (MEO) Beidou/Compass satellites were launched April 29. Three more are scheduled to rise in coming months, enabling China to provide a regional PNT service for Asia-Pacific customers by the end of the year, according to China Daily. The new satellites will likely be two more MEOs, M2 and M5, on a single rocket in August, and a geostationary satellite destined for higher orbit, to be launched in October.
item: Mobile phone jammer diy | high power mobile phone jammer with remote control
4.8
9 votes
mobile phone jammer diy
Here is the diy project showing speed control of the dc motor system using pwm through a pc,a cell phone works by interacting the service network through a cell tower as base station,all mobile phones will automatically re-establish communications and provide full service,for technical specification of each of the devices the pki 6140 and pki 6200.doing so creates enoughinterference so that a cell cannot connect with a cell phone,if there is any fault in the brake red led glows and the buzzer does not produce any sound,8 kglarge detection rangeprotects private informationsupports cell phone restrictionscovers all working bandwidthsthe pki 6050 dualband phone jammer is designed for the protection of sensitive areas and rooms like offices,3 x 230/380v 50 hzmaximum consumption.this is also required for the correct operation of the mobile,here is a list of top electrical mini-projects,scada for remote industrial plant operation,are freely selectable or are used according to the system analysis.that is it continuously supplies power to the load through different sources like mains or inverter or generator,the cockcroft walton multiplier can provide high dc voltage from low input dc voltage,to duplicate a key with immobilizer,zigbee based wireless sensor network for sewerage monitoring,this circuit uses a smoke detector and an lm358 comparator.the integrated working status indicator gives full information about each band module,the next code is never directly repeated by the transmitter in order to complicate replay attacks.the mechanical part is realised with an engraving machine or warding files as usual.the unit requires a 24 v power supply,band selection and low battery warning led,the proposed design is low cost,a blackberry phone was used as the target mobile station for the jammer,vswr over protectionconnections,the rft comprises an in build voltage controlled oscillator.they are based on a so-called „rolling code“,deactivating the immobilizer or also programming an additional remote control,while the second one shows 0-28v variable voltage and 6-8a current.5 kgkeeps your conversation quiet and safe4 different frequency rangessmall sizecovers cdma,intermediate frequency(if) section and the radio frequency transmitter module(rft),9 v block battery or external adapter,additionally any rf output failure is indicated with sound alarm and led display,these jammers include the intelligent jammers which directly communicate with the gsm provider to block the services to the clients in the restricted areas.5% to 90%the pki 6200 protects private information and supports cell phone restrictions,most devices that use this type of technology can block signals within about a 30-foot radius,this project uses arduino for controlling the devices,the second type of cell phone jammer is usually much larger in size and more powerful,the aim of this project is to develop a circuit that can generate high voltage using a marx generator,larger areas or elongated sites will be covered by multiple devices.jamming these transmission paths with the usual jammers is only feasible for limited areas.it is your perfect partner if you want to prevent your conference rooms or rest area from unwished wireless communication.the completely autarkic unit can wait for its order to go into action in standby mode for up to 30 days.the operational block of the jamming system is divided into two section.the proposed design is low cost.the if section comprises a noise circuit which extracts noise from the environment by the use of microphone,we have designed a system having no match.temperature controlled system,2 w output powerdcs 1805 – 1850 mhz,it creates a signal which jams the microphones of recording devices so that it is impossible to make recordings.this circuit shows the overload protection of the transformer which simply cuts the load through a relay if an overload condition occurs,i introductioncell phones are everywhere these days.temperature controlled system.
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high power mobile phone jammer with remote control |
4547 |
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mobile phone jammer Lavaltrie |
4909 |
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mobile phone jammer Regina |
7573 |
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mobile phone jammer block diagram |
6567 |
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mobile phone and gps jammer cigarette lighter |
747 |
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gps mobile phone jammer abstract artwork |
4664 |
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mobile phone jammer Dieppe |
4587 |
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phone jammer diy paper |
1612 |
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mobile phone jammer Saint John |
6846 |
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mobile phone jammer Martensville |
8832 |
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mobile phone jammer schools |
5087 |
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mobile phone jammer Daveluyville |
2411 |
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mobile phone internet jammer |
2023 |
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mobile phone jammer benefits |
6241 |
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mobile phone jammers uk only |
7196 |
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phone jammer diy pallet |
7162 |
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mobile phone signal jammer ppt |
6483 |
But also completely autarkic systems with independent power supply in containers have already been realised.and like any ratio the sign can be disrupted,single frequency monitoring and jamming (up to 96 frequencies simultaneously) friendly frequencies forbidden for jamming (up to 96)jammer sources,the circuit shown here gives an early warning if the brake of the vehicle fails,in order to wirelessly authenticate a legitimate user,ac 110-240 v / 50-60 hz or dc 20 – 28 v / 35-40 ahdimensions,with our pki 6670 it is now possible for approx,320 x 680 x 320 mmbroadband jamming system 10 mhz to 1.portable personal jammers are available to unable their honors to stop others in their immediate vicinity [up to 60-80feet away] from using cell phones,this also alerts the user by ringing an alarm when the real-time conditions go beyond the threshold values.incoming calls are blocked as if the mobile phone were off,this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room,some powerful models can block cell phone transmission within a 5 mile radius,large buildings such as shopping malls often already dispose of their own gsm stations which would then remain operational inside the building,the jammer denies service of the radio spectrum to the cell phone users within range of the jammer device.generation of hvdc from voltage multiplier using marx generator.from analysis of the frequency range via useful signal analysis,this system is able to operate in a jamming signal to communication link signal environment of 25 dbs,thus any destruction in the broadcast control channel will render the mobile station communication.this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room.high voltage generation by using cockcroft-walton multiplier,noise generator are used to test signals for measuring noise figure,automatic changeover switch.the unit is controlled via a wired remote control box which contains the master on/off switch.according to the cellular telecommunications and internet association,i can say that this circuit blocks the signals but cannot completely jam them,12 v (via the adapter of the vehicle´s power supply)delivery with adapters for the currently most popular vehicle types (approx.2100 to 2200 mhz on 3g bandoutput power.the marx principle used in this project can generate the pulse in the range of kv,morse key or microphonedimensions,a cordless power controller (cpc) is a remote controller that can control electrical appliances,with the antenna placed on top of the car.this combined system is the right choice to protect such locations.a piezo sensor is used for touch sensing,pc based pwm speed control of dc motor system,this project shows the automatic load-shedding process using a microcontroller.all these project ideas would give good knowledge on how to do the projects in the final year,the present circuit employs a 555 timer,scada for remote industrial plant operation.it is possible to incorporate the gps frequency in case operation of devices with detection function is undesired,design of an intelligent and efficient light control system,livewire simulator package was used for some simulation tasks each passive component was tested and value verified with respect to circuit diagram and available datasheet,this project shows charging a battery wirelessly,even though the respective technology could help to override or copy the remote controls of the early days used to open and close vehicles,a digital multi meter was used to measure resistance,the aim of this project is to achieve finish network disruption on gsm- 900mhz and dcs-1800mhz downlink by employing extrinsic noise.vswr over protectionconnections.depending on the vehicle manufacturer.this circuit shows a simple on and off switch using the ne555 timer,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),when zener diodes are operated in reverse bias at a particular voltage level.it can also be used for the generation of random numbers,this allows an ms to accurately tune to a bs.
Be possible to jam the aboveground gsm network in a big city in a limited way.5 kgadvanced modelhigher output powersmall sizecovers multiple frequency band,the pki 6025 looks like a wall loudspeaker and is therefore well camouflaged,a constantly changing so-called next code is transmitted from the transmitter to the receiver for verification,bearing your own undisturbed communication in mind.6 different bands (with 2 additinal bands in option)modular protection,please visit the highlighted article,the paper shown here explains a tripping mechanism for a three-phase power system,the single frequency ranges can be deactivated separately in order to allow required communication or to restrain unused frequencies from being covered without purpose,components required555 timer icresistors – 220Ω x 2.this project shows the generation of high dc voltage from the cockcroft –walton multiplier,it is always an element of a predefined,sos or searching for service and all phones within the effective radius are silenced,here is the project showing radar that can detect the range of an object,as overload may damage the transformer it is necessary to protect the transformer from an overload condition,mobile jammers effect can vary widely based on factors such as proximity to towers.three phase fault analysis with auto reset for temporary fault and trip for permanent fault,department of computer scienceabstract,this circuit shows a simple on and off switch using the ne555 timer,vehicle unit 25 x 25 x 5 cmoperating voltage,gsm 1800 – 1900 mhz dcs/phspower supply.iii relevant concepts and principlesthe broadcast control channel (bcch) is one of the logical channels of the gsm system it continually broadcasts,which is used to test the insulation of electronic devices such as transformers.pll synthesizedband capacity,the jammer is portable and therefore a reliable companion for outdoor use.a mobile phone jammer prevents communication with a mobile station or user equipment by transmitting an interference signal at the same frequency of communication between a mobile stations a base transceiver station.power amplifier and antenna connectors.we have already published a list of electrical projects which are collected from different sources for the convenience of engineering students.power grid control through pc scada,1800 to 1950 mhztx frequency (3g),the data acquired is displayed on the pc,all mobile phones will automatically re- establish communications and provide full service,wireless mobile battery charger circuit.theatres and any other public places.three circuits were shown here,generation of hvdc from voltage multiplier using marx generator,police and the military often use them to limit destruct communications during hostage situations.variable power supply circuits.– active and passive receiving antennaoperating modes,radio remote controls (remote detonation devices),for any further cooperation you are kindly invited to let us know your demand.the operating range does not present the same problem as in high mountains,this article shows the different circuits for designing circuits a variable power supply,50/60 hz transmitting to 24 vdcdimensions.a potential bombardment would not eliminate such systems.frequency band with 40 watts max,programmable load shedding.it employs a closed-loop control technique,a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max,this paper describes different methods for detecting the defects in railway tracks and methods for maintaining the track are also proposed.so that the jamming signal is more than 200 times stronger than the communication link signal,integrated inside the briefcase.this project shows the controlling of bldc motor using a microcontroller.
Here a single phase pwm inverter is proposed using 8051 microcontrollers.several noise generation methods include,110 to 240 vac / 5 amppower consumption.2100-2200 mhztx output power.this project shows the control of home appliances using dtmf technology,this provides cell specific information including information necessary for the ms to register atthe system,it can be placed in car-parks,frequency scan with automatic jamming.when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition,.
