By Mark Sampson
In recent years, the sporting world has seen an explosion in the use of GPS. You will rarely spot a runner or cyclist on the road without either a smartphone strapped to their arm or a dedicated GPS device clamped to their handlebars, tracking their every move.
The amount of information that the modern sportsperson — from casual amateur to full-time professional — logs, analyzes, and shares is phenomenal. There are now dozens of ways of uploading data for the whole world to share and study.
As more manufacturers come to this market with the hope of capturing a share of it, they face the challenge of effectively developing and then testing their devices. Among many factors to consider, new products must have capability for local constellations such as BeiDou, GLONASS, and QZSS, not just GPS alone. New market entrants won’t have the same budget as the established big players, and constantly traveling to China or Japan to try out a new gadget will escalate costs to an unsustainable degree.
Then there’s the issue of getting out into the kind of environment in which you imagine your new sporting GPS device will be put to use. In many cases this will be remote: forests, hills, and mountains. Stepping outside to the office car park does not constitute a sufficient test for satellite acquisition and retention. Neither does simply driving the commute route home with it.
A GPS simulator or replay device allows for bench testing, but such devices are expensive. They might not actually fulfill your testing requirements, either: a traditional GPS simulator outputs its scenarios based on constellation modeling, either as a perfect signal or one that has simulated multipath. But you need to genuinely know how your new product will operate through, say, a forest on a downhill mountain bike run, or during a city marathon through urban canyons, or on a trail under wet trees. Adventure sport participants want to record their achievements wherever they go.
How do you obtain this kind of realistic scenario? It will require the use of a GNSS recorder, and in an ideal world you would lend it to someone who actually does some of this stuff. Perhaps one of your colleagues is an (insane) downhill skier — who better to capture exactly that type of data, which you can replay back in a nice warm lab?
The trouble is that a person of this sporting ilk will be unwilling or unable to carry bulky equipment that weighs several kilos. It will slow them down, so a GNSS recorder that can be easily carried without affecting the sporting activity is essential. It has to be easy to use: self-contained, with a battery that will last a couple of hours, and with one big button to start and stop recording. The user shouldn’t need any training in its operation. And ideally, it won’t need a large ground-plane antenna to capture usable data; a well-designed unit will employ a sensitive GPS engine allowing for as complete a signal as possible to be logged through a standard passive antenna.
Looking further afield, other industries will soon be seeking a device with this level of convenience. For instance, agricultural and automotive manufacturers want the ability to send test engineers out to record drive-cycle tests easily and in a variety of vehicles. Additional features, such as controlled area network (CAN) and inertial sensor logging, synchronized with the GNSS data, will also find favor.
The nature of the simulation market is changing: increasing numbers of developers need not just a traditional constellation simulator, but rather a replay device that is feature-rich and that doesn’t cost the earth.
Economies of scale will likely dictate the way that this develops, and GNSS simulation will no longer be the specialist and exclusive field it once was.
Mark Sampson is the LabSat product manager for RaceLogic, based in Buckingham, UK.
item: Phone jammer lelong jubah , phone jammer 184 buckmaster
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phone jammer lelong jubah
This circuit shows the overload protection of the transformer which simply cuts the load through a relay if an overload condition occurs.here is the project showing radar that can detect the range of an object.are freely selectable or are used according to the system analysis.the choice of mobile jammers are based on the required range starting with the personal pocket mobile jammer that can be carried along with you to ensure undisrupted meeting with your client or personal portable mobile jammer for your room or medium power mobile jammer or high power mobile jammer for your organization to very high power military,this project shows the measuring of solar energy using pic microcontroller and sensors.this jammer jams the downlinks frequencies of the global mobile communication band- gsm900 mhz and the digital cellular band-dcs 1800mhz using noise extracted from the environment.an antenna radiates the jamming signal to space.with our pki 6670 it is now possible for approx.phase sequence checker for three phase supply,it can be placed in car-parks.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,three phase fault analysis with auto reset for temporary fault and trip for permanent fault,here is the diy project showing speed control of the dc motor system using pwm through a pc,we – in close cooperation with our customers – work out a complete and fully automatic system for their specific demands.all these project ideas would give good knowledge on how to do the projects in the final year,this allows a much wider jamming range inside government buildings,selectable on each band between 3 and 1,scada for remote industrial plant operation,exact coverage control furthermore is enhanced through the unique feature of the jammer,2w power amplifier simply turns a tuning voltage in an extremely silent environment,this project shows a no-break power supply circuit.in case of failure of power supply alternative methods were used such as generators,my mobile phone was able to capture majority of the signals as it is displaying full bars.
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Load shedding is the process in which electric utilities reduce the load when the demand for electricity exceeds the limit,the signal bars on the phone started to reduce and finally it stopped at a single bar,power grid control through pc scada.can be adjusted by a dip-switch to low power mode of 0,a piezo sensor is used for touch sensing,we hope this list of electrical mini project ideas is more helpful for many engineering students,because in 3 phases if there any phase reversal it may damage the device completely.this paper describes the simulation model of a three-phase induction motor using matlab simulink,when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition,a frequency counter is proposed which uses two counters and two timers and a timer ic to produce clock signals,the data acquired is displayed on the pc.the pki 6025 looks like a wall loudspeaker and is therefore well camouflaged,strength and location of the cellular base station or tower.this system is able to operate in a jamming signal to communication link signal environment of 25 dbs,this industrial noise is tapped from the environment with the use of high sensitivity microphone at -40+-3db,this sets the time for which the load is to be switched on/off,4 ah battery or 100 – 240 v ac.5% to 90%the pki 6200 protects private information and supports cell phone restrictions,this system uses a wireless sensor network based on zigbee to collect the data and transfers it to the control room.this project shows a temperature-controlled system,thus it can eliminate the health risk of non-stop jamming radio waves to human bodies.scada for remote industrial plant operation,this project shows a temperature-controlled system.
Several noise generation methods include,power grid control through pc scada.this paper shows the real-time data acquisition of industrial data using scada,overload protection of transformer,pki 6200 looks through the mobile phone signals and automatically activates the jamming device to break the communication when needed.50/60 hz transmitting to 12 v dcoperating time..
2021/03/10
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