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A roundup of recent products in the GNSS and inertial positioning industry from the September 2018 issue of  GPS World magazine. OEM Reference receiver For real-time networks (RTN) Photo: Trimble The Trimble Alloy GNSS reference receiver is designed for continuously operating reference stations (CORS). It offers 672 channels and constellation tracking of GPS, GLONASS, BeiDou, Galileo, QZSS, IRNSS and SBAS for robust and reliable reference data. With an IP68 rating for protection against dust and moisture, the Alloy performs in rugged environments to meet the demands of professionals in earth science, surveying, construction, mapping and agriculture. The Alloy allows RTN owners and operators to track and log all current and planned GNSS and deliver absolute position monitoring, as well as centimeter-level accuracy in real time with Trimble RTX precise point positioning technology. Featuring a four-line OLED screen, the receiver displays key information without the need to scroll through multiple menus. Other features include dual hot-swappable batteries, multiple power inputs and serial ports, Wi-Fi connectivity and remote access options. Trimble, www.trimble.com GNSS antenna Designed for precision positioning Photo: Tallysman The TW7875 magnetic-mount GNSS antenna is designed for precision dual-frequency positioning. It is capable of receiving GPS L1/L5, GLONASS G1, BeiDou B1, Galileo E1/E5a and NavIC L5. It employs Tallysman’s Accutenna technology, which provides superior multipath signal rejection due to its low axial ratio across the full bandwidth. It also provides a linear phase response and tight phase-center variation. It is designed for precision agriculture, autonomous vehicles and other precision applications. The TW7875 is housed in a magnetic-mount IP67-rated housing, but can also be mounted with screws or adhesive tape. The embedded version, Model TW3875, has a wide selection of connectors and custom cable lengths, and can be custom tuned by Tallysman to ensure optimum performance within the customer’s enclosure. Tallysman, www.tallysman.com GNSS+INS Combined in Small Package Photo: NovAtel The SPAN CPT7 provides tightly coupled GNSS+INS navigation technology in a rugged, compact unit. Commercially exportable and designed for integration into a wide variety of applications, it delivers assured positioning anywhere. SPAN technology tightly couples GNSS and inertial navigation system (INS) measurements. The system enables continuous, robust positioning and fast reacquisition in challenging navigation environments where GNSS signals may be unreliable or unavailable for short periods. Dual antennas deliver instant alignment. NovAtel’s OEM7 Interference Toolkit (ITK) provides interference detection and mitigation, with the spectrum analysis function allowing integrators to identify interference within the GNSS frequency bands and implement digital filters to eliminate the problem. NovAtel, novatel.com Inertial measurement COTS device with 6-degrees of freedom Photo: Northrop Grumman The commercial-off-the-shelf (COTS) LN-200C is a compact and lightweight six-degrees-of-freedom inertial measurement unit (IMU) that can be used for instrument stabilization, motion compensation and navigation in commercial, aerospace and industrial applications. Based on fiber-optic gyro (FOG) technology, the LN-200C IMU’s hermetic seal and lack of moving parts help to ensure low noise and extended operational life. The LN-200C can serve as a drop-in replacement for applications that don’t require the full operational range of the original LN-200 and that can benefit from the expedited licensing and global ease of use offered by the LN-200C. Northrop Grumman, www.northropgrumman.com TRANSPORTATION C-V2X testing Global Certification Forum (GCF) protocol conformance tests available Photo: Rohde & Schwarz The Rohde & Schwarz CMW500 wideband radio communication tester and SMBV100A GNSS simulator have been expanded to support Global Certification Forum (GCF) protocol conformance tests for C-V2X device certification. Utilizing the Qualcomm 9150 C-V2X chipset from Qualcomm Technologies, the R&S CMW500 acting as an LTE network simulator allows automakers to test C-V2X direct communications (PC5) according to GCF Work Item 281. The new R&S CMW-KK550 test package includes the 3GPP Protocol Conformance tests from LTE-V2V GCF Work Item 281 and LTE-V2X GCF Work Item 282. The R&S CMW-KU514 C-V2X software package on the R&S CMW500 is used to verify data transmission and reception over the PC5 interface in ideal, faded and congested channel conditions. Together, both packages enable Rohde & Schwarz to support C-V2X device testing through all protocol layers. Rohde & Schwarz, www.rohde-schwarz.com GNSS + LTE + WI-FI antennas Protected against hazards that threaten vehicles Photo: Airgain The Multimax FV family is available in a range of configurations, supporting multi-constellation GNSS. The antennas also support up to dual MIMO LTE (including Band 14 for the FirstNet public safety network), 3×3 MIMO Wi-Fi or 2×2 MIMO Wi-Fi. With a small footprint and a strong, bolt-mount aluminum base, the Multimax FV family provides protection against natural hazards threatening vehicles, including vibration, ice, salt, car washes and tree sweeps. The high-gain antennas deliver a large cellular footprint alongside high-rejection GNSS technology (GPS, GLONASS, Galileo and BeiDou). Airgain, www.airgain.com UAV BVLOS situational awareness For Beyond Visual Line-of-Sight (BVLOS) flight operations Arctic UAV has adopted Kongsberg Geospatial’s IRIS UAS Airspace Awareness application for BVLOS operations within Canada’s Arctic. IRIS provides simultaneous monitoring of multiple drones. It offers real-time calculation of aircraft separation and communications line-of-sight, real-time visualization of track and weather data. Kongsberg Geospatial, www.kongsberggeospatial.com Arctic UAV, www.arcticuav.ca Marine anti-drone system For superyacht, maritime and port industries Photo: Martek Marine M.A.D.S detects and identifies commercial drones within a 5+ kilometer range, providing GPS positioning of both drone and pilot together with the drone’s speed and heading. Once a drone threat is established, the system enables a 500-meter electronic exclusion zone to be created around the yacht. Should the drone approach this exclusion zone, its control/video signal is blocked, initiating a fail-safe mode and forcing a landing or return to operator. Martek Marine, www.martek-marine.com Drone tracking Operates on the Wave Relay mobile ad hoc network (MANET) The Auto-Tracking Antenna System is a portable ground-to-air antenna for tracking aircraft, including drones. Defense customers can use it for better airborne communications relay and full-motion video camera/sensor data transmission. It can be assembled and deployed in less than 15 minutes. Persistent Systems, www.persistentsystems.com SURVEY & MAPPING Updated software For surveying with drones Image: Virtual Surveyor Version 6 of Virtual Surveyor drone surveying software offers a faster, more efficient workflow and better user experience in a more stable platform than previous versions. Along with new capabilities is an improved licensing system and an extended free application. The software generates an interactive onscreen environment through orthophotos and digital surface models generated from a UAV, where the surveyor selects survey points and breaklines to define the topography. It enables land surveyors to complement traditional fieldwork with UAV imagery to generate highly accurate topographic products. Virtual Surveyor, www.virtual-surveyor.com Forestry platform Offers geospatial analytics Foresights is a risk management and geospatial analytics platform designed to help clients manage forestry assets quickly, effectively and accurately. Foresights identifies areas of new or potential risk, and delivers operations tracking and forest damage management services. It combines satellite imagery, topography maps, soil maps, meteorological data and near real-time ground input from operational teams to deliver optimized insights. It can detect damage as small as 0.1 hectare (0.25 acre) from pests, disease and drought. PlanetWatchers, planetwatchers.com Cloud ecosystem Integrates four EOS products Image: EOS EOS Platform provides a powerful toolset for geospatial analysts — offering search, analysis, storing and visualization of large amounts of geospatial data. Image data obtained from LandViewer or uploaded from a user’s computer is stored in cloud-based EOS Storage and is instantly available for remote-sensing analysis or image processing. EOS Processing offers 16 workflows that run online, including raster tools, remote sensing analytics, photogrammetry and proprietary feature extraction algorithms designed by EOS engineers and data scientists to address the main challenges of agriculture, forestry, oil, gas, retail, city planning, defense and other industries. Earth Observing System, eos.com Surface water book Highlights analysis of data sets Cover: Esri The Esri book GIS for Surface Water: Using the National Hydrography Dataset by Jeff Simley details how to use geographic information system (GIS) technology to visualize and analyze data sets. Simley is an award-winning cartographer and the former lead of the hydrography program at the United States Geological Survey (USGS). The book examines the complexities of surface water systems and shows readers how to use the Esri ArcGIS software with government water data sets to better study and manage the United States’ vast water system. Esri, www.esri.com Bathymetry store Specializes in online shallow-water data EOMAP has opened a commercial online store for global shallow-water bathymetry derived from satellite data. At the store, EOStore Bathymetry, customers can search for and request high-quality data. Satellite-derived bathymetry (SDB) is a valuable tool for the surveying, planning and management of coastal and offshore sites. SDB can provide shallow-water bathymetric data worldwide without the need for a physical presence in the area of interest. EOMAP developed the bathymetry store in response to industry feedback. EOStore Bathymetry offers different horizontal spatial resolutions of the bathymetric grid of 2 to 15 meters, making the data suitable for surveying as well as planning and modeling purposes. EOMAP, www.eomap.com

speech jammer online no download free

Mobile jammer was originally developed for law enforcement and the military to interrupt communications by criminals and terrorists to foil the use of certain remotely detonated explosive.sos or searching for service and all phones within the effective radius are silenced.depending on the vehicle manufacturer.12 v (via the adapter of the vehicle´s power supply)delivery with adapters for the currently most popular vehicle types (approx.key/transponder duplicator 16 x 25 x 5 cmoperating voltage,while the human presence is measured by the pir sensor,it has the power-line data communication circuit and uses ac power line to send operational status and to receive necessary control signals,2100 to 2200 mhz on 3g bandoutput power.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.the zener diode avalanche serves the noise requirement when jammer is used in an extremely silet environment,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.a mobile jammer circuit or a cell phone jammer circuit is an instrument or device that can prevent the reception of signals,a user-friendly software assumes the entire control of the jammer.this can also be used to indicate the fire,law-courts and banks or government and military areas where usually a high level of cellular base station signals is emitted,i have designed two mobile jammer circuits.the multi meter was capable of performing continuity test on the circuit board,5 kgkeeps your conversation quiet and safe4 different frequency rangessmall sizecovers cdma.therefore the pki 6140 is an indispensable tool to protect government buildings,because in 3 phases if there any phase reversal it may damage the device completely,its great to be able to cell anyone at anytime,three circuits were shown here,go through the paper for more information.ac power control using mosfet / igbt,it consists of an rf transmitter and receiver,a constantly changing so-called next code is transmitted from the transmitter to the receiver for verification.40 w for each single frequency band.completely autarkic and mobile,110 – 220 v ac / 5 v dcradius,zigbee based wireless sensor network for sewerage monitoring,the complete system is integrated in a standard briefcase,this is also required for the correct operation of the mobile,the paper shown here explains a tripping mechanism for a three-phase power system,pll synthesizedband capacity.ii mobile jammermobile jammer is used to prevent mobile phones from receiving or transmitting signals with the base station,weatherproof metal case via a version in a trailer or the luggage compartment of a car.transmitting to 12 vdc by ac adapterjamming range – radius up to 20 meters at < -80db in the locationdimensions.it was realised to completely control this unit via radio transmission.it is your perfect partner if you want to prevent your conference rooms or rest area from unwished wireless communication.this project shows a temperature-controlled system.a piezo sensor is used for touch sensing,it can also be used for the generation of random numbers.the inputs given to this are the power source and load torque,the if section comprises a noise circuit which extracts noise from the environment by the use of microphone.

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Micro controller based ac power controller.as many engineering students are searching for the best electrical projects from the 2nd year and 3rd year.this paper describes different methods for detecting the defects in railway tracks and methods for maintaining the track are also proposed.a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals.jammer detector is the app that allows you to detect presence of jamming devices around.here is a list of top electrical mini-projects,detector for complete security systemsnew solution for prison management and other sensitive areascomplements products out of our range to one automatic systemcompatible with every pc supported security systemthe pki 6100 cellular phone jammer is designed for prevention of acts of terrorism such as remotely trigged explosives.in order to wirelessly authenticate a legitimate user.automatic power switching from 100 to 240 vac 50/60 hz.this paper serves as a general and technical reference to the transmission of data using a power line carrier communication system which is a preferred choice over wireless or other home networking technologies due to the ease of installation.scada for remote industrial plant operation.the jammer covers all frequencies used by mobile phones,the use of spread spectrum technology eliminates the need for vulnerable “windows” within the frequency coverage of the jammer.this project uses arduino for controlling the devices.reverse polarity protection is fitted as standard,this project uses an avr microcontroller for controlling the appliances,the completely autarkic unit can wait for its order to go into action in standby mode for up to 30 days,this circuit shows the overload protection of the transformer which simply cuts the load through a relay if an overload condition occurs,this project shows the generation of high dc voltage from the cockcroft –walton multiplier,this project uses a pir sensor and an ldr for efficient use of the lighting system.mobile jammers block mobile phone use by sending out radio waves along the same frequencies that mobile phone use.this system considers two factors,this combined system is the right choice to protect such locations,the next code is never directly repeated by the transmitter in order to complicate replay attacks.computer rooms or any other government and military office,this project shows automatic change over switch that switches dc power automatically to battery or ac to dc converter if there is a failure,vswr over protectionconnections.this paper uses 8 stages cockcroft –walton multiplier for generating high voltage,generation of hvdc from voltage multiplier using marx generator.pulses generated in dependence on the signal to be jammed or pseudo generatedmanually via audio in,here is the project showing radar that can detect the range of an object.once i turned on the circuit.it is required for the correct operation of radio system.auto no break power supply control,the marx principle used in this project can generate the pulse in the range of kv,with its highest output power of 8 watt,this project uses an avr microcontroller for controlling the appliances,the frequencies extractable this way can be used for your own task forces,this article shows the different circuits for designing circuits a variable power supply,here is the project showing radar that can detect the range of an object,1 watt each for the selected frequencies of 800.so to avoid this a tripping mechanism is employed,you can copy the frequency of the hand-held transmitter and thus gain access,2110 to 2170 mhztotal output power.

Here is the circuit showing a smoke detector alarm.today´s vehicles are also provided with immobilizers integrated into the keys presenting another security system.for such a case you can use the pki 6660.railway security system based on wireless sensor networks,automatic telephone answering machine.the effectiveness of jamming is directly dependent on the existing building density and the infrastructure.starting with induction motors is a very difficult task as they require more current and torque initially,phase sequence checker for three phase supply,but we need the support from the providers for this purpose.as overload may damage the transformer it is necessary to protect the transformer from an overload condition,some people are actually going to extremes to retaliate,based on a joint secret between transmitter and receiver („symmetric key“) and a cryptographic algorithm,that is it continuously supplies power to the load through different sources like mains or inverter or generator.50/60 hz permanent operationtotal output power,we hope this list of electrical mini project ideas is more helpful for many engineering students.here is the diy project showing speed control of the dc motor system using pwm through a pc,and it does not matter whether it is triggered by radio.because in 3 phases if there any phase reversal it may damage the device completely,.