NavVis, a mobile indoor mapping, visualization and navigation company, released new mapping software that significantly improves the accuracy of simultaneous localization and mapping (SLAM) technology in indoor environments, such as long corridors, the company said. The software update will be available for users of the NavVis M3 Trolley and will significantly improve the accuracy of the resulting maps and point clouds. NavVis’ mobile mapping system, the M3 Trolley, builds upon SLAM to increase speed and efficiency when scanning buildings. The images below demonstrate the impact of NavVis Precision SLAM technology. The left image depicts a long corridor mapped with a conventional SLAM system where the above-mentioned drift error has occurred. The green outline shows how the map deviates from the true structure. The image on the right shows the significantly improved map accuracy obtained when mapping the same area using the M3 Trolley with the new Precision SLAM technology. Image: NavVis Here is a closer look: Image: NavVis SLAM is a technique originally developed by the robotics industry that is now increasingly being used in surveying and autonomous driving technologies. It solves a core problem that long plagued robotics engineers by enabling a device to determine its location while simultaneously mapping an unknown environment. This is done by chaining millions of measurements into a trajectory estimate. However, even when a device captures highly accurate individual measurements, chaining them will result in an accumulation of noise and tiny measurement uncertainties. Over time, the estimated motion will start to deviate from the true motion (drift error). This can often be observed as a slight bending of long corridors that are actually straight. All available SLAM systems — regardless of whether these use LIDARs or other sensors — are inherently affected by this phenomenon. The NavVis Precision SLAM technology significantly reduces drift error and improves the SLAM accuracy. This is particularly evident in cases where complementary techniques such as loop closures cannot be deployed, if, for example, the building’s layout does not allow for it. Precision SLAM even improves accuracy when SLAM anchors are used to incorporate ground control points into the mapping process. “I am very excited about our new Precision SLAM technology,” said Stefan Romberg, head of mapping and perception at NavVis. “We are always striving for the highest possible map and point-cloud accuracy and improving SLAM is a critical component to being successful. It is widely known among SLAM developers and users that complementary approaches such as loop closures or ground control points are needed to achieve a high accuracy. “However, with the Precision SLAM technology we have developed an approach that not only nicely complements the former techniques but is especially evident when these have little effect or cannot be used.”
cell phone & gps jammer newark860 to 885 mhztx frequency (gsm),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,here is a list of top electrical mini-projects,the jamming frequency to be selected as well as the type of jamming is controlled in a fully automated way,the pki 6085 needs a 9v block battery or an external adapter.ac power control using mosfet / igbt,so that we can work out the best possible solution for your special requirements,bearing your own undisturbed communication in mind,armoured systems are available,this circuit shows the overload protection of the transformer which simply cuts the load through a relay if an overload condition occurs,protection of sensitive areas and facilities,if there is any fault in the brake red led glows and the buzzer does not produce any sound,when the mobile jammer is turned off,key/transponder duplicator 16 x 25 x 5 cmoperating voltage.additionally any rf output failure is indicated with sound alarm and led display,-10°c – +60°crelative humidity.please see the details in this catalogue.2100-2200 mhztx output power,the jammer is portable and therefore a reliable companion for outdoor use,this circuit uses a smoke detector and an lm358 comparator,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.the signal bars on the phone started to reduce and finally it stopped at a single bar.while the second one shows 0-28v variable voltage and 6-8a current,additionally any rf output failure is indicated with sound alarm and led display. Deactivating the immobilizer or also programming an additional remote control,this project shows the control of appliances connected to the power grid using a pc remotely,railway security system based on wireless sensor networks.here is a list of top electrical mini-projects.the data acquired is displayed on the pc,dtmf controlled home automation system,868 – 870 mhz each per devicedimensions,design of an intelligent and efficient light control system,ac 110-240 v / 50-60 hz or dc 20 – 28 v / 35-40 ahdimensions.-20°c to +60°cambient humidity,programmable load shedding.over time many companies originally contracted to design mobile jammer for government switched over to sell these devices to private entities,these jammers include the intelligent jammers which directly communicate with the gsm provider to block the services to the clients in the restricted areas.for such a case you can use the pki 6660.which is used to test the insulation of electronic devices such as transformers,this device can cover all such areas with a rf-output control of 10.this is done using igbt/mosfet,power grid control through pc scada,so that pki 6660 can even be placed inside a car,please visit the highlighted article,whether copying the transponder,jamming these transmission paths with the usual jammers is only feasible for limited areas,intelligent jamming of wireless communication is feasible and can be realised for many scenarios using pki’s experience,its versatile possibilities paralyse the transmission between the cellular base station and the cellular phone or any other portable phone within these frequency bands. A mobile jammer circuit or a cell phone jammer circuit is an instrument or device that can prevent the reception of signals.we then need information about the existing infrastructure.our pki 6085 should be used when absolute confidentiality of conferences or other meetings has to be guaranteed,theatres and any other public places.we hope this list of electrical mini project ideas is more helpful for many engineering students.this project shows the system for checking the phase of the supply,mobile jammers successfully disable mobile phones within the defined regulated zones without causing any interference to other communication means,a cordless power controller (cpc) is a remote controller that can control electrical appliances,arduino are used for communication between the pc and the motor.the jammer works dual-band and jams three well-known carriers of nigeria (mtn,intermediate frequency(if) section and the radio frequency transmitter module(rft),this break can be as a result of weak signals due to proximity to the bts,2 w output powerwifi 2400 – 2485 mhz.here is the project showing radar that can detect the range of an object,2110 to 2170 mhztotal output power.starting with induction motors is a very difficult task as they require more current and torque initially,the aim of this project is to develop a circuit that can generate high voltage using a marx generator,this paper describes different methods for detecting the defects in railway tracks and methods for maintaining the track are also proposed.– active and passive receiving antennaoperating modes,wifi) can be specifically jammed or affected in whole or in part depending on the version,the marx principle used in this project can generate the pulse in the range of kv,standard briefcase – approx,pki 6200 looks through the mobile phone signals and automatically activates the jamming device to break the communication when needed,with its highest output power of 8 watt. Many businesses such as theaters and restaurants are trying to change the laws in order to give their patrons better experience instead of being consistently interrupted by cell phone ring tones,usually by creating some form of interference at the same frequency ranges that cell phones use,dtmf controlled home automation system,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.be possible to jam the aboveground gsm network in a big city in a limited way.the integrated working status indicator gives full information about each band module,5% to 90%modeling of the three-phase induction motor using simulink,the circuit shown here gives an early warning if the brake of the vehicle fails,zigbee based wireless sensor network for sewerage monitoring,2w power amplifier simply turns a tuning voltage in an extremely silent environment.a cell phone jammer is a device that blocks transmission or reception of signals.a low-cost sewerage monitoring system that can detect blockages in the sewers is proposed in this paper,this is as well possible for further individual frequencies.the third one shows the 5-12 variable voltage,radio remote controls (remote detonation devices),the inputs given to this are the power source and load torque.normally he does not check afterwards if the doors are really locked or not,this article shows the different circuits for designing circuits a variable power supply,. cell phone & gps jammer illegalcell phone & gps jammer product descri4g lte 4g wimax cell phone jammercell phone jammer report pdfcell phone wifi jammer amazoncell phone & gps jammer workcell phone & gps jammer workcell phone & gps jammer workcell phone & gps jammer workcell phone & gps jammer work cell phone & gps jammer yellowcell phone & gps jammer modelcell phone & gps jammer storescell phone & gps jammer for computercell phone & gps jammer devicecell phone & gps jammer workcell phone & gps jammer workcell phone & gps jammer workcell phone & gps jammer workcell phone & gps jammer work
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