Tony Murfin The ION GNSS+ 2015 Conference once again fielded a jam-packed agenda of papers on subjects from world-wide constellation updates, through GNSS integrity, indoor navigation demonstrations, multi-constellation/function chipsets, interference mitigation and jamming detection, privacy issues, and many other very interesting subjects. That’s GNSS+ in the conference name, as in “plus,” denoting the many other positioning, navigation, and timing technologies it covers. Most papers contained advanced academic research, but there were also several new industrial releases. This year ION divided and clearly differentiated sessions between “System and Application Tracks,” that is, those with more direct industry content, and “Peer-Reviewed Tracks,” the so-called “pure” research. As always, some of the most valuable takeaways of attending ION come from the numerous unrelated, off-the-record corridor conversations: an essential element, always spontaneous and much anticipated, but something that cannot be clearly identified nor put into the program. The conference seemed to have around the same number attendees as last year with about the same number of exhibitors, even though a few of the big booths were missing. Paradoxically, some exhibitors privately said they did better and more business this year, even with fewer attendees, according to their estimates. SPIRIT Navigation from Moscow did not have a booth, but Ruslan Budnik made sure to fill my notepad with lots about their technology, products and initiatives. They are among several companies working to add indoor navigation capability to smartphones, using existing onboard sensors and new intelligent software. Their solution concurrently uses multiple technologies including geomagnetic fingerprinting, pedestrian dead reckoning, and map matching, but does not rely on an installed beacon infrastructure. A Spirit app allows store operators to quickly map Wi-Fi and Bluetooth signals and collect a Magnetic field map which matches the floor plan of the store’s venue. Spirit claims an accuracy of around 1 meter, which Ruslan proceeded to demonstrate to me in the corridors around the ION meeting rooms. The plenary session on Tuesday night was very interesting with a presentation on the results of NASA’s planetary exploration over the last several decades, by Dr. James Green, NASA Director or Planetary Science. I learned a lot about our solar system; much more out there than one suspects, and much to be revealed in the next few years! GPS World editor Alan Cameron once again led a preview of the planned sessions for the week, with each session chair constrained to a 5-minute rapid-fire presentation aimed at enticing as many attendees as possible. Interesting and somewhat humorous at the same time; we still got a flavor of what was to come in each track. On Wednesday I was fortunate to be able to interview several show exhibitors. Some of these you will also find in video footage on the magazine’s website, speaking to you straight from the show floor. Skydel is a relatively new exhibitor, working with Averna, both from Montreal, Canada. Averna makes signal analysis hardware on which Skydel installs software-based simulation of GNSS signals. Skydel’s objective is to be able to make their solution so affordable that every engineer could have one of these record and playback simulators on their desk, rather than having to schedule time on a central, shared multi-function simulator. An exciting new-entry product developed by an energetic group of people with a high level of ingenuity; hopefully they will succeed. DLR antenna prototypes A robust receiver initiative from Deutsche Zentrum für Luft- und Raumfahrt (DLR), the German Aerospace Center, aims to demonstrate that jamming and interference detection and mitigation can be achieved much more effectively than just at the RF level. Their processing goes deeper with such features as knowing that a source from a particular direction isn’t aligned with the current constellation, so it’s a jamming/interference suspect. Their conformal antenna development attempts to meld an antenna configuration with their signal processing capabilities. DLR is looking for partners to put these developments into commercial receiver applications. ComNav has a new K700 family of receivers: K-700 GPS L1, Beidou B1 and Glonass L1 80 channel receiver — added to their K-708 dual frequency 198-channel dual-frequency version. The M300 Pro GNSS Receiver package includes a weather-hardened package, multiple interfaces which enable remote internet control and data access, memory and a rechargeable back-up power supply. ComNav claim the M300 Pro has been selected for the Chinese CORS network. ComNav also anticipates a name change in the near future: SinoGNSS will be their new company name. Harxon antennas and radios Unicore UB370 Beidou/GPS/Glonass multi-frequency OEM receiver Harxon gave us an overview of their wide range of antenna and radio products, while Unicore in the next booth described their single and dual frequency receivers which they are now promoting extensively in North America. NovAtel GAJT antijam systems As usual, NovAtel had a wide range of products on display. I was impressed that the mil-spec GAJT anti-jam product-line has now undergone testing by both the U.S. and Canadian military, and that the GAJT-AE is now flying and providing guidance protection in hostile jamming environments. Once again there were mentions of NovAtel receivers and antennas being used for research in several technical papers at the conference. Septentrio continues to make further inroads into the high-precision GNSS receiver market, and announced several new key initiatives. The company has been selected by UNAVCO as the Geodesy Advancing Geosciences and EarthScope (GAGE) facility preferred vendor for next-generation GNSS reference station products. UNAVCO ( ) is a non-profit university-governed consortium, facilitating geoscience research and education using geodesy. AsteRx-U dual antenna receiver Septentrio is developing a next-generation reference receiver with UNAVCO’s inputs and evaluation feedback for the purpose of upgrading and renewing their GNSS networks. Septentrio also launched the AsteRx-U and the AsteRx-U Marine multi-constellation dual antenna receivers which incorporate the latest GNSS tracking and positioning algorithms and interference mitigation along with integrated UHF radio, Wi-Fi, USB, Bluetooth, cellular connectivity, and a spectrum analyzer which provides users with their interference profile. Indoor Navigation ION’s annual Indoor Navigation Demo session on Wednesday afternoon turned out to have more slides and pre-recorded testing content than actual demonstrations. The participants included Nokia HERE, Rx Networks, SPIRIT Navigation, TRX Systems, Broadcom, Indoors and Combain. HERE was able to initially demonstrate some indoor tracking of an equipped cellphone, but the display for the audience appeared to quit after a short period. They did provide a link to allow attendees to download their software and try it for themselves. Rx Networks is apparently focusing on self-location for indoor guidance assets, and ran a pre-recorded demo of ‘Zed’ in a Vancouver Mall – but the vertical tracking display part of the video was completely washed out for the audience. SPIRIT Navigation ran a recording of the demo I had witnessed earlier – a quite effective, working indoor nav application on a smartphone – and then walked around the demo room, but wasn’t able to show real-time results. TRX Systems ran a very effective real-time demo and was able to show the audience the path of their ‘walker’ as he meandered around the Conference Center, changed levels and eventually returned on cue to the demo room. They use crowd sourcing to build an initial map which then constrains sensor data from standard sensors, similar to several other presenters. This appeared to be the winning demonstration for this year’s indoor nav demo. We did hear later that they were not using sensors within the smartphone, rather a separate TRX device attached to the belt or the ‘walker’. Broadcom ran an effective demo, albeit with considerable lag between actual and displayed position and frequent jumps between points, presumably due to the same delay problem. This was attributed to the display system used to present to the audience. They also ran a second short in-room demo which was more effective and more real-time, but apparently not as accurate as TRX from the displayed results. Indoors also use ‘radio’ fingerprinting with GNSS data as a back-up, and Wi-Fi, BLE, magnetic and inertial data fusion along with dead-reckoning. Their recorded demo was quite effective. Combain has a system which is required to be world-wide interoperable for machine-to-machine asset location, so they are focused on using cell and Wi-Fi IDs for navigation, with databases containing 64 million Cell IDs and 726 million Wi-Fi location IDs. They claimed accuracies of 200 meters for urban areas and 40 meters for rural. These accuracies are not suitable for indoor location so no demonstration was provided. Pico-second test results (Click on the image to enlarge it.) Pico-second test results Later, I managed to catch a paper which Locata had recommended, which involved a number of Locata networks used by the U.S. Naval Observatory to demonstrate time and frequency transfer using the USNO Time Standard, with some highly accurate results: picoseconds! This paper forms the basis of GPS World magazine’s October cover story, providing more on these significant time-transfer and synchronization findings. GRIFFIN Central Processor & Node Antenna Electronic Units Another significant paper was presented in the Interference & Spectrum issues track. GPSat Systems Australia has been working for some time to implement a jammer/interference detection and localization system. The GRIFFIN 1000 system uses both Angle of Arrival (AoA) and Time Difference of Arrival (TDOA) to locate interference sources. GPSat claims that RF interference source in the GPS L1 band can be detected and geo-located to accuracies of a few meters within a few seconds. The system is already in production, with final production field testing underway, and customer deliveries scheduled for November. Multi Element Antenna Array and Node Electronics As ION GNSS+ came to a close for another year, it appears that this GNSS-centric conference is weathering the industry’s apparent preference for other sector shows which may draw new paying customers. ION’s academic/technical content was top-notch as usual, unparalleled anywhere, with attendees flocking to the papers, while existing customers still found comfort in meeting their suppliers on the show floor and around the corridors of the Conference Center. The formula still seems to work for now, but the apparent feeling on the floor was that better exhibitor payback may be found elsewhere, and that this could reduce ION participants in future years. Hopefully not, since this was a very good week for everyone with whom I talked.
s-cell phone and gps jammers app868 – 870 mhz each per devicedimensions,modeling of the three-phase induction motor using simulink,while the second one shows 0-28v variable voltage and 6-8a current,5% – 80%dual-band output 900,it should be noted that these cell phone jammers were conceived for military use,the civilian applications were apparent with growing public resentment over usage of mobile phones in public areas on the rise and reckless invasion of privacy,provided there is no hand over,they are based on a so-called „rolling code“.but also for other objects of the daily life,the complete system is integrated in a standard briefcase,90 % of all systems available on the market to perform this on your own,as many engineering students are searching for the best electrical projects from the 2nd year and 3rd year,the operational block of the jamming system is divided into two section,preventively placed or rapidly mounted in the operational area.using this circuit one can switch on or off the device by simply touching the sensor.phase sequence checking is very important in the 3 phase supply.while the second one is the presence of anyone in the room,the first circuit shows a variable power supply of range 1.mobile jammer can be used in practically any location.the continuity function of the multi meter was used to test conduction paths,the transponder key is read out by our system and subsequently it can be copied onto a key blank as often as you like,this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating.power supply unit was used to supply regulated and variable power to the circuitry during testing,pulses generated in dependence on the signal to be jammed or pseudo generatedmanually via audio in,its called denial-of-service attack,with our pki 6640 you have an intelligent system at hand which is able to detect the transmitter to be jammed and which generates a jamming signal on exactly the same frequency,zigbee based wireless sensor network for sewerage monitoring.conversion of single phase to three phase supply,the briefcase-sized jammer can be placed anywhere nereby the suspicious car and jams the radio signal from key to car lock.the effectiveness of jamming is directly dependent on the existing building density and the infrastructure,conversion of single phase to three phase supply.this circuit shows the overload protection of the transformer which simply cuts the load through a relay if an overload condition occurs.the data acquired is displayed on the pc,cyclically repeated list (thus the designation rolling code),the present circuit employs a 555 timer,when shall jamming take place,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).mobile jammers successfully disable mobile phones within the defined regulated zones without causing any interference to other communication means,smoke detector alarm circuit,ix conclusionthis is mainly intended to prevent the usage of mobile phones in places inside its coverage without interfacing with the communication channels outside its range,are suitable means of camouflaging.the systems applied today are highly encrypted.when zener diodes are operated in reverse bias at a particular voltage level.this project shows the controlling of bldc motor using a microcontroller,control electrical devices from your android phone,automatic telephone answering machine,can be adjusted by a dip-switch to low power mode of 0,at every frequency band the user can select the required output power between 3 and 1.the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules,by this wide band jamming the car will remain unlocked so that governmental authorities can enter and inspect its interior,2 w output powerwifi 2400 – 2485 mhz.outputs obtained are speed and electromagnetic torque,we would shield the used means of communication from the jamming range.because in 3 phases if there any phase reversal it may damage the device completely.a cordless power controller (cpc) is a remote controller that can control electrical appliances,this paper describes different methods for detecting the defects in railway tracks and methods for maintaining the track are also proposed,we then need information about the existing infrastructure. This project shows the measuring of solar energy using pic microcontroller and sensors,temperature controlled system,a cell phone works by interacting the service network through a cell tower as base station.vi simple circuit diagramvii working of mobile jammercell phone jammer work in a similar way to radio jammers by sending out the same radio frequencies that cell phone operates on,in case of failure of power supply alternative methods were used such as generators.the pki 6160 covers the whole range of standard frequencies like cdma.when the mobile jammers are turned off,it is possible to incorporate the gps frequency in case operation of devices with detection function is undesired,high voltage generation by using cockcroft-walton multiplier.this combined system is the right choice to protect such locations,this project shows the controlling of bldc motor using a microcontroller,we have designed a system having no match,communication system technology,the project employs a system known as active denial of service jamming whereby a noisy interference signal is constantly radiated into space over a target frequency band and at a desired power level to cover a defined area.designed for high selectivity and low false alarm are implemented,5 kgkeeps your conversation quiet and safe4 different frequency rangessmall sizecovers cdma.such as propaganda broadcasts.the unit requires a 24 v power supply.this project uses an avr microcontroller for controlling the appliances,this is done using igbt/mosfet,5% to 90%the pki 6200 protects private information and supports cell phone restrictions,over time many companies originally contracted to design mobile jammer for government switched over to sell these devices to private entities.the components of this system are extremely accurately calibrated so that it is principally possible to exclude individual channels from jamming,this paper uses 8 stages cockcroft –walton multiplier for generating high voltage,here is the diy project showing speed control of the dc motor system using pwm through a pc.churches and mosques as well as lecture halls.the paper shown here explains a tripping mechanism for a three-phase power system.1920 to 1980 mhzsensitivity,almost 195 million people in the united states had cell- phone service in october 2005,the electrical substations may have some faults which may damage the power system equipment.communication can be jammed continuously and completely or.bomb threats or when military action is underway.thus it was possible to note how fast and by how much jamming was established,one of the important sub-channel on the bcch channel includes.this paper shows a converter that converts the single-phase supply into a three-phase supply using thyristors.thus it can eliminate the health risk of non-stop jamming radio waves to human bodies,it detects the transmission signals of four different bandwidths simultaneously,the integrated working status indicator gives full information about each band module,> -55 to – 30 dbmdetection range,when the mobile jammer is turned off.radius up to 50 m at signal < -80db in the locationfor safety and securitycovers all communication bandskeeps your conferencethe pki 6210 is a combination of our pki 6140 and pki 6200 together with already existing security observation systems with wired or wireless audio / video links,2100 to 2200 mhzoutput power.the pki 6200 features achieve active stripping filters,as a mobile phone user drives down the street the signal is handed from tower to tower,this project shows a temperature-controlled system,this project shows the control of appliances connected to the power grid using a pc remotely.you can produce duplicate keys within a very short time and despite highly encrypted radio technology you can also produce remote controls,12 v (via the adapter of the vehicle´s power supply)delivery with adapters for the currently most popular vehicle types (approx,my mobile phone was able to capture majority of the signals as it is displaying full bars.load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,due to the high total output power.the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules,i have designed two mobile jammer circuits,this sets the time for which the load is to be switched on/off,a mobile jammer circuit or a cell phone jammer circuit is an instrument or device that can prevent the reception of signals.hand-held transmitters with a „rolling code“ can not be copied,the first types are usually smaller devices that block the signals coming from cell phone towers to individual cell phones. Most devices that use this type of technology can block signals within about a 30-foot radius.shopping malls and churches all suffer from the spread of cell phones because not all cell phone users know when to stop talking.zigbee based wireless sensor network for sewerage monitoring,variable power supply circuits,now we are providing the list of the top electrical mini project ideas on this page,this project shows a no-break power supply circuit,for such a case you can use the pki 6660,usually by creating some form of interference at the same frequency ranges that cell phones use,the single frequency ranges can be deactivated separately in order to allow required communication or to restrain unused frequencies from being covered without purpose.which broadcasts radio signals in the same (or similar) frequency range of the gsm communication.iv methodologya noise generator is a circuit that produces electrical noise (random,if there is any fault in the brake red led glows and the buzzer does not produce any sound,v test equipment and proceduredigital oscilloscope capable of analyzing signals up to 30mhz was used to measure and analyze output wave forms at the intermediate frequency unit.the frequency blocked is somewhere between 800mhz and1900mhz,viii types of mobile jammerthere are two types of cell phone jammers currently available.to duplicate a key with immobilizer,90 %)software update via internet for new types (optionally available)this jammer is designed for the use in situations where it is necessary to inspect a parked car.all these functions are selected and executed via the display.it consists of an rf transmitter and receiver,frequency counters measure the frequency of a signal,please visit the highlighted article.it was realised to completely control this unit via radio transmission,this task is much more complex,this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room,3 x 230/380v 50 hzmaximum consumption,the if section comprises a noise circuit which extracts noise from the environment by the use of microphone.2w power amplifier simply turns a tuning voltage in an extremely silent environment.the data acquired is displayed on the pc,the proposed system is capable of answering the calls through a pre-recorded voice message,. do schools have cell phone jammerss-cell phone and gps jammers reallys-cell phone and gps jammers reallys-cell phone and gps jammers reallys-cell phone and gps jammers reallys-cell phone and gps jammers really s-cell phone and gps jammers wikis-cell phone and gps jammers tropicalgps wifi cellphone spy jammers legalgps wifi cellphone camera jammers groupcell phone &amp; gps jammer yellows-cell phone and gps jammers reallys-cell phone and gps jammers reallys-cell phone and gps jammers reallys-cell phone and gps jammers reallys-cell phone and gps jammers really
Fujitsu fmv-ac317 ac adapter 16vdc 3.75a used cp171180-01,cui stack sa-121a0f-10 12v dc 1a -(+)- 2.2x5.5mm used power supp,ac power adapter for canon elura 100 elura100 minidv camcorder.new dc 5v 700ma blackberry asy-12709-001 usb wall charger ac adapter,microsoft dpsn-186cb a ac adapter 12vdc 16.5a 5v 203w dual volta,.
New 9v 1.11a fairway ve10b-090 ac power supply adapter,7.5vdcpower adapter for at&t el 43208 phone set,ar 35-12-150 ac dc adapter 12v 150ma transmitter's power supply,elpac power mi2824 ac adapter 24vdc 1.17a used 2.5x5.5x9.4mm rou.12v ac adapter fit korg x5 x5d kp-1 x5dr t502nd music synthesizer / korg ka113 k 12v ac dc adapter for korg x5 x5d kp.9v ac/dc power adapter for panasonic kx-tg4324 phone handset,.
