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Plus: GLONASS CDMA Tracked, Third Beidou-2 Launched The second report from non‐governmental members of the LightSquared/GPS Technical Working Group (TWG) was filed with the Federal Communications Commission (FCC) on April 15. For those anxious to see actual results of interference/desensitization of GPS receivers by the proposed LightSquared terrestrial signal — or, conversely, absence of said results — the report does not contain any such hard news. It relates the set-up of TWG work sub-teams to test various categories of GPS devices and receivers. The sub-teams have identified laboratories for testing activities, developed test plans, and identified devices, receivers, and systems to be tested. Attachments to the report include current draft test plans and the current list of devices and receiver models submitted for testing by companies. The following sections summarize the testing laboratories and devices selected for testing by each sub-team: aviation cellular general location/navigation high precision, networks, and timing. These three sub-teams are collaborating to a large extent. space-based receivers. The full report also includes a “high-level description of test plan” by each sub-team. Aviation Sub‐Team. The aviation sub‐team will rely primarily on testing, funded by the Federal Aviation Administration (FAA), that will be performed at Zeta Associates Incorporated of Fairfax, Virginia. Additional testing is planned by the U.S. government at White Sands Missile Range and Holloman Air Force Base, both in New Mexico, for use by the National PNT Engineering Forum (NPEF) LightSquared Working Group. These results will be considered for inclusion in the TWG Final Report by the aviation sub‐team. Presumably, this group will test military receivers, under classified categorization. The aviation receivers are representative of those in use today. Their selection was based mainly upon device availability (those already owned by the FAA Technical Center). They are: Canadian Marconi GLSSU 5024; Garmin 300XL; Garmin GNS 430W; Garmin GNS 480; Rockwell Collins GLU‐920 multimode receiver; Rockwell Collins GLU‐925 multimode receiver; Rockwell Collins GNLU‐930 multimode receiver; Symmetricomm timing card (used for an FAA automation system); WAAS NovAtel G‐II ground reference station; and Zyfer timing receiver (used for the WAAS ground network). Cellular Sub‐Team. The cellular sub‐team is in the process of engaging PC TEST, Columbia, Maryland; CETECOM, Milpitas, California; InterTek, Lexington, Kentucky; and ETS Lindgren, Cedar Park, Texas, for device testing. The cellular sub‐team expects to test approximately 50 different device models. The selections represent current and legacy devices and have been prioritized based on sales volumes. While it is expected that there will be some representation of data‐only devices and femtocells, the testing will focus largely on handheld devices. Those designated for testing are: Apple iPhone 4 (GSM and CDMA); HTC A6366; HTC ADR6200; HTC ADR63002; HTC ADR63003; HTC ADR6400L; HTC Touch Pro 2; LG Lotus Elite; LG Rumor Touch; LG VN250; LG VS740; LG VX5500; LG VX5600; LG VX8300; LG VX8360; LG VX8575; LG VX9100; LG VX9200; Motorola A855; Motorola DROID X; Motorola VA76R; Motorola W755; Nokia 6650; Nokia E71x; RIM 8330C; RIM 8530; RIM 9630; RIM 9650; RIM 9800; Samsung Moment; Samsung SCH‐U310; Samsung SCH‐U350; Samsung SCH‐U450; Samsung SCH‐U640; Samsung SCH‐U750; Samsung SGHi617; Samsung SGHi917; Sierra Wireless 250 U USG 3G/4G; and Sony Ericsson W760a. General Location/Navigation. This sub-team has chosen Alcatel/Lucent as its initial facility for testing. Twenty-six devices were selected based on nominations by manufacturers represented on the sub‐team, considering the percentage of the installed user base. They include: Garmin Forerunner 110 and 305; Garmin ETREX‐H; Garmin Dakota 20; Garmin Oregon 550; Garmin GTU 10; BI Inc. ExacuTrack One; Garmin GPS 17X; Garmin GPSMAP 441; Hemisphere Vector MV101; GM OnStar (model TBD); Garmin GVN 54; TomTom XL335; TomTom ONE 3RD Edition; TomTom GO 2505; Garmin nűvi 2X5W, 13XX, 3XX, and 37XX; Garmin GPSMAP 496; Garmin aera 5xx; Honeywell Bendix/King AV8OR; Trimble iLM2730; Trimble TVG‐850; Trimble Placer Gold; and Hemisphere Outback S3. High Precision-Networks-Timing. The HPN&T sub‐teams are collaborating extensively to develop joint test plans and procedures. The joint sub-teams have chosen the U.S. Navy’s NAVAIR facility for testing. To be tested are: Hemisphere R320; Hemisphere A320; Deere iTC; Deere SF‐3000; Deere SF‐3050; Trimble MS990; Trimble MS992; Trimble AgGPS 252, AgGPS 262, AgGPS 442, and AgGPS EZguide 500; Trimble CFX 750; Trimble FMX; Trimble GeoExplorer 3000 series GeoXH and GeoXT; Trimble GeoExplorer 6000 series GeoXH and GeoXT; Trimble Juno SB; Trimble NetR9 and NetR5; Trimble R8 GNSS; Trimble 5800; Leica SR530; Leica GX1200 Classic; Leica GX1230GG; Leica GR10; Leica Uno; Leica GS15; Topcon HiPer Ga and HiPer II; Topcon GR‐3 and GR‐5; Topcon MC‐R3; Topcon NET‐G3A; Topcon TruPath/AGI‐3; NovAtel PROPAK‐G2‐Plus; NovAtel FLEXG2‐STAR; NovAtel FLEXPAK‐G2‐V1, FLEXPAK‐G2‐V2 and FLEXPAK6; NovAtel PROPAK‐V3; NovAtel DL‐V3; Septentrio PolaRx3e; and Septentrio AsteRx3. Timing receivers: FEI‐Zyfer UNISync GPS/PRS; TruePosition GPS timing receiver; Symmetricom SSU 2000 (Motorola M12M); Symmetricom Time Provider 1000/1100 (Furuno GT‐8031); Symmetricom TimeSource 3500 (XR5 (Navstar/Symmetricom); Trimble Resolution T; Trimble Accutime Gold; Trimble Resolution SMT; Trimble MiniThunderbolt; NovAtel OEMStar; NovAtel OEM4; and NovAtel OEMV3. Space‐Based Receivers. Lab testing has been conducted at the NASA Jet Propulsion Laboratory (JPL) in California. The receivers are used by NASA for space‐based missions and high-precision science applications. The TWG agreed that these would be tested at JPL by NASA, with participation by LightSquared personnel, and the results provided to the TWG; see Appendix G The devices tested are current or representative of GPS receivers in use by NASA or planned for use in the near future for space and science applications: TriG (NASA Next‐generation Space Receiver) and IGOR (Space Receiver). NASA/JPL also tested the following high-precision receivers and shared the results with the HPT&N sub‐team: JAVAD Delta G3T (High Precision‐IGS) and Ashtech Z12 (High Precision‐IGS). Conclusion. For all sub-teams, analyses will consider both LightSquared’s expected transmit power of 62 dBm per channel and its maximum authorized transmit power of 72 dBm per channel. The WG co‐chairs will update the Commission on its progress in a subsequent report on May 16. The April 15 TWG report contains these appendices: Working Group Roster; List of Receivers and Devices; Aviation Test Procedure; Cellular Test Plan Draft; General Location/Navigation Test Plan Draft; High Precision/Networks/Timing Test Plans Draft; Space‐Based Receivers Test Process. GLONASS CDMA: New Era’s Dawn Glimpsed from Multiple Receivers The newest Russian satellite, launched on February 26, began transmitting its new code-division multiple-access (CDMA) signal on April 7. In a clear break from all previous GLONASS signals, which are frequency-division multiple-access (FDMA), the new signal is expressly designed to be interoperable with current and future GPS signals, and with the coming Galileo signals, all of which have a CDMA structure. Thus, a new era of GNSS, truly global navigation satellite systems, began on April 7. JAVAD GNSS was the first company to announce that it had tracked CDMA signals of the GLONASS-K satellite in the L3 GLONASS band. Data was logged at the company’s Moscow office on April 8 from 02:30 until 07:30 UTC. The satellite’s pseudorange (in chips) and signal-to-noise ratio (in relative numbers) are shown in Figures 1 and 2. Figure 1. GLONASS-K’s pseudorange in chips, courtesy of JAVAD GNSS. The y-axis goes from 0 to 12,000 in increments of 2,000; the x-axis goes from 0 to 500 in increments of 100. (Click to enlarge.) Figure 2. GLONASS-K’s signal-to-noise ratio (in relative numbers), courtesy of JAVAD GNSS. The y-axis goes from 0 to 10,000 in increments of 2,000; the x-axis goes from 0 to 500 in increments of 100. (Click to enlarge.) On April 11, the satellite’s code-minus-phase and signal-to-noise ratio were tracked (Figures 3 and 4). Data quality is quite similar to GPS, according to the company. Figure 3. GLONASS-K satellite’s code-minus-phase data (courtesy of JAVAD GNSS). (Click to enlarge.) Figure 4. GLONASS-K satellite’s signal-to-noise ratio (courtesy of JAVAD GNSS). (Click to enlarge.) Future GLONASS satellites of the K1 and subsequent K2 generations will broadcast CDMA signals in multiple frequency bands. GLONASS-K satellites are markedly different from their predecessors. They are lighter, use an unpressurized housing (similar to that of GPS satellites), have improved clock stability, and a longer, 10-year design life. There will be two versions: GLONASS-K1 will transmit a CDMA signal on a new L3 frequency, and GLONASS-K2 will in addition feature CDMA signals on L1 and L2 frequencies. The CDMA signal in the L3 band has a center frequency of 1202.025 MHz. The new generations of GLONASS signals and satellites are described in detail in the April “Innovation” column of GPS World, edited by Richard Langley. Septentrio Navigation of Leuven, Belgium, also tracked GLONASS CDMA L3 signal with its AsteRx3 receivers. Figure 5 shows the C/N0 in dB-Hz of the legacy L1-C/A signal and of the data component of the new L3 CDMA signal. The graph covers the time span starting at 20:30 (UTC) on April 10 and ending at 02:00 on April 11. Figure 6 shows the de-trended code minus phase from L1-C/A and L3 signals. Such a plot provides a glimpse of the code measurement multipath and noise, according to the company. Figure 5. GLONASS-K1 AsteRx3 measurements; C/N0 in dB-Hz of L1-C/A and L3 CDMA (courtesy of Septentrio Navigation). Figure 6. GLONASS-K1 AsteRx3 measurements; de-trended code minus phase of L1-C/A and L3 CDMA (courtesy of Septentrio Navigation). Topcon Positioning Systems (TPS) also released data on the new signal, stating that signals from the new satellite “provide an additional accuracy advantage over older satellites.” Figures 7 and 8 show data from the company’s Moscow office. Figure 7. Pseudorange-phase of four signals transmitted by the new K1 satellite (courtesy of Topcon Positioning Systems). (Click to enlarge.) Figure 8. Signal-to-noise ratios of four signals transmitted by the new K1 satellite (courtesy of Topcon Positioning Systems). (Click to enlarge.) Finally, the German Aerospace Center’s Institute of Communications and Navigation recorded the spectrum of the GLONASS CDMA signal, captured with a 25-meter dish antenna, Raisting Satellite Earth Station, near Munich. The signal spectrum spans at least 40 MHz (Figure 9). It contains additional sidelobes not shown in the plot. The plot indicates total power of all components of the transmitted signal. Figure 9. GLONASS CDMA signal’s power over frequency (courtesy of the German Space Agency, DLR). Third Beidou-2 IGSO Launched China’s BeiDou-2 (Compass) satellite launched on April 9 has attained a circularized orbit, joining two inclined geosynchronous orbit (IGSO) satellites to form a mini-constellation centered on an east longitude of about 120 degrees. While BeiDou-IGSO-3’s orbit might still be tweaked slightly, it is clear that the orbits of the three satellites are arranged so that there will always be one satellite with a high elevation angle over China, according to the CANSPACE news service operated by the University of New Brunswick. The latest spacecraft joins four geostationary satellites, a middle-Earth orbiting vehicle, and the two other IGSO satellites now on orbit. As the first Chinese launch in 2011, the new arrival presages much activity to come. With eight now flying, six more spacecraft are scheduled to rise by 2012, completing a 14-satellite constellation to provide a regional service over eastern Asia. The regional system will consist of five geostationary or GEO, five IGSO, and four medium-Earth orbit satellites. Long-range plans envision a 35-satellite constellation providing global service by 2020: 27 MEOs, 5 GEO satellites, and 3 IGSOs. The satellites will transmit signals on the 1195.14–1219.14 MHz, 1256.52–1280.52 MHz, 1559.05–1563.15 MHz, and 1587.69-1591.79 MHz carrier frequencies. Compass satellites have an announced lifespan of eight years. Three IGSO satellite tracks over China (image courtesy of CANSPACE).  

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wholesale gps signal jammer software

Rs-485 for wired remote control rg-214 for rf cablepower supply.the light intensity of the room is measured by the ldr sensor,the scope of this paper is to implement data communication using existing power lines in the vicinity with the help of x10 modules,as a mobile phone user drives down the street the signal is handed from tower to tower,dtmf controlled home automation system,its versatile possibilities paralyse the transmission between the cellular base station and the cellular phone or any other portable phone within these frequency bands,320 x 680 x 320 mmbroadband jamming system 10 mhz to 1,that is it continuously supplies power to the load through different sources like mains or inverter or generator,can be adjusted by a dip-switch to low power mode of 0,band scan with automatic jamming (max,this project shows charging a battery wirelessly,vswr over protectionconnections,is used for radio-based vehicle opening systems or entry control systems.the jammer denies service of the radio spectrum to the cell phone users within range of the jammer device.please visit the highlighted article.the effectiveness of jamming is directly dependent on the existing building density and the infrastructure,selectable on each band between 3 and 1.the frequencies extractable this way can be used for your own task forces,the predefined jamming program starts its service according to the settings.according to the cellular telecommunications and internet association,to cover all radio frequencies for remote-controlled car locksoutput antenna.standard briefcase – approx,which broadcasts radio signals in the same (or similar) frequency range of the gsm communication.the duplication of a remote control requires more effort,from analysis of the frequency range via useful signal analysis.department of computer scienceabstract.power grid control through pc scada,this project shows the generation of high dc voltage from the cockcroft –walton multiplier.noise generator are used to test signals for measuring noise figure,here a single phase pwm inverter is proposed using 8051 microcontrollers,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.this is done using igbt/mosfet,1920 to 1980 mhzsensitivity.band selection and low battery warning led,please visit the highlighted article.140 x 80 x 25 mmoperating temperature.one is the light intensity of the room,because in 3 phases if there any phase reversal it may damage the device completely.a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals,a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max,gsm 1800 – 1900 mhz dcs/phspower supply.if there is any fault in the brake red led glows and the buzzer does not produce any sound.provided there is no hand over,jamming these transmission paths with the usual jammers is only feasible for limited areas.

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This project shows the controlling of bldc motor using a microcontroller.this project shows the control of appliances connected to the power grid using a pc remotely,this project uses arduino for controlling the devices,but with the highest possible output power related to the small dimensions,in contrast to less complex jamming systems.this project shows the control of that ac power applied to the devices,40 w for each single frequency band,frequency scan with automatic jamming,the completely autarkic unit can wait for its order to go into action in standby mode for up to 30 days,exact coverage control furthermore is enhanced through the unique feature of the jammer,where the first one is using a 555 timer ic and the other one is built using active and passive components,we have designed a system having no match,you can control the entire wireless communication using this system.a break in either uplink or downlink transmission result into failure of the communication link,load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,synchronization channel (sch).this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating.cell phones are basically handled two way ratios,law-courts and banks or government and military areas where usually a high level of cellular base station signals is emitted,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.-20°c to +60°cambient humidity,fixed installation and operation in cars is possible.zener diodes and gas discharge tubes,it is required for the correct operation of radio system,transmission of data using power line carrier communication system.it is always an element of a predefined,additionally any rf output failure is indicated with sound alarm and led display,solar energy measurement using pic microcontroller.this is done using igbt/mosfet,military camps and public places,depending on the vehicle manufacturer,rs-485 for wired remote control rg-214 for rf cablepower supply,1 w output powertotal 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,all mobile phones will indicate no network,key/transponder duplicator 16 x 25 x 5 cmoperating voltage,energy is transferred from the transmitter to the receiver using the mutual inductance principle.110 – 220 v ac / 5 v dcradius,this device can cover all such areas with a rf-output control of 10.as overload may damage the transformer it is necessary to protect the transformer from an overload condition,automatic telephone answering machine.ac power control using mosfet / igbt.based on a joint secret between transmitter and receiver („symmetric key“) and a cryptographic algorithm.

This system considers two factors,by activating the pki 6050 jammer any incoming calls will be blocked and calls in progress will be cut off.2 – 30 m (the signal must < -80 db in the location)size,thus providing a cheap and reliable method for blocking mobile communication in the required restricted a reasonably,this project shows a no-break power supply circuit.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,this project uses arduino for controlling the devices.and it does not matter whether it is triggered by radio.this covers the covers the gsm and dcs,it detects the transmission signals of four different bandwidths simultaneously.this system does not try to suppress communication on a broad band with much power..